PCB with peelable solder mask. This synthetic latex peelable solder mask is supplied in 30 cc syringes with dispensing needles. The solder mask process is an important PCB manufacturing step that is performed during fabrication. Solder Balls 2. Pcb sepecification: base material; board thickness; copper thickness; color of solder mask and silkscreen; surface finished. Inner and outer copper thickness (OZ) 0. 3 Thermal Shock - Solder Mask. A C B D D A C B copper solder mask stencil apertures All dimensions are in units mm 1 7x 1. 10mm: Drilling & Finished hole diameter (mechanical drill) 0. * The Solder mask ink shall not be applied unevenly, or come peeling. The Fifth: the thickness of the solder mask. Find the most up-to-date version of TM-650 2. The solder mask thickness over the laminate will typically be 0. 2mm and min laser drilling diameter is 0. Solder Mask is the PCB protective coating applied to the surface of most circuit boards, usually leaving only the solderable areas exposed. The Soldermask is first printed or sprayed on to the production panel and then UV-exposed with the correct solder mask pattern, developed and dried. One of the things to remember is to never use acid core solder. An approved mask or respirator fitted with an organic vapour cartridge should be worn if the product is used in a poorly ventilated area In case of aerosol formation, we recommend wearing of appropriate respiratory protection equipment with ABEK P2 filter (EN 14387). Mask Musings. Our laminate solder mask is an aqueous alkaline processed dry film mask. Contact: IPC 3000 Lakeside Drive, Suite 309S Bannockburn, Illinois. Ceasolder-AL (Acrylic Latex) Peelable Solder Mask DESCRIPTION Ceasolder- AL is a temporary, peelable solder mask comprised of a thixotropic, synthetic acrylic latex designed to withstand fluxing, wave soldering and cleaning operations. 7 Minimum soldermask thickness 0. Professional Home Brew PCB: Creating a Solder Mask Using UV Curable Paint: I noticed that on ebay you can purchase UV curable paint for creating solder masks on your home etched PCBs , but the attached instructions that it comes with are woeful. Solder mask or solder resist is a lacquer- like layer of polymer that provides a permanent protective coating for the copper traces of a printed circuit board (PCB) and prevents solder from bridging between conductors, thereby preventing short circuits. And if we don't meet the customer's requirements, we reject the board and build another one. Solder mask higher than pads Check solder mask height and compare to specification Stencil apertures larger than PWB pads Measure and compare to specification Hot Air Solder Level finish creates uneven printing surface More planar, non-HASL finishes. whether the solder mask thickness will be important in defining the joint volume. Notation print: In white, black or yellow colour: S. But also want to share with you a tip how to neatly silver solder. Category: 6 Layers Black Solder Mask PCB Board Thickness: 3. By DHL, UPS, FedEx, TNT using clients account. 60mm Thickness Green Solder Mask For Ups Pcb Board,pwb printed wiring board,pwb assembly & Accessories Supplier or Factory - Accuracy Electronics Technologies Co. Maxim recommends the use of NSMD pads because they provide a larger metal area for the solder to anchor to the edges of metal pads on the board for improved. Kester TC-527 can be thinned with water and uncured mask left on equipment can be removed with water. Most solder mask apertures are NSMD. Acid core solder will corrode component leads, board traces and form conductive paths between components. There is a huge improved to placement & scaling of solder dams. Please refer to our Design Aid Via Covering. Pcb sepecification: base material; board thickness; copper thickness; color of solder mask and silkscreen; surface finished. Troubleshooting mask issues such as peeling or lifting after the ENIG process starts with understanding the origins of the defect. Therefore various ink types are available for specific fields of application. 5 mm in width by the thickness being tested. For over 27 years, Taiyo has been exceeding the industry's needs for solder mask and specialty inks. 3oz copper thickness 2 layer pcb lpi red solder mask printed circuit board fr 4 material 2layer pcb. China Red Solder Mask PCB for Gold Surface Immersion, Find details about China Gold PCB, PCBA from Red Solder Mask PCB for Gold Surface Immersion - Yueqing Page Electrical Co. Solder which extends into the stress relief bend of any leaded part shall not be cause for rejection if the topside bend radius is discernable, and if the solder does not extend within one (1) lead diameter of the part or end seal. 0007 over conductor) Solder Mask Colors Green, Blue, Red, Black, Yellow, Clear Solder Mask Type Taiyo BSN4000 Minimum Mask Defined Pad Diameter. Solder mask: Black Green White Red Thickness ≥17 um, Block,BGA Character : Black Yellow Green White style: Highness ≥0. Both solder mask and silk screen can be applied in several different colors and finishes, depending on function and aesthetic wishes. 5MM Thickness DIY Prototyping PCB Board 4. Public details available include frequency information, internal & external photos, and manuals. 254mm(other colors) To have solder mask bridge, the spacing between copper pads edge must be 0. Dynamask 5000 Series DFSM is available in thicknesses of 75 micron (3ml) and 100 micron (4ml) The choice of solder mask thickness will depend on the pwb design geometries and height of the. , LTD in China. NSMD require a smaller diameter copper land; the absence of solder mask around the solder land allows the solder to flow. 5 mils or higher. 6 5 15 25 Table 1: Solder Mask (Cross Section "X-a”) (µm) Solder Pad (Cross section "X-b”) (µm). Thicker stencils will leave more solder paste. 1 out of 5 stars 16. These products are designed to apply smoothly, dry quickly, withstand high lead-free process temperatures, and then be removed easily. 3 mm so that should be the maximum solder mask opening. Advantages: Low cost Widely Available Reworkable Disadvantages: Uneven surfaces Not good for fine pitch Pb Thermal shock Solder Bridging Plugged or reduced PTH’s Process Flow. ,LTD in China. The vast majority of PCBs have 1 ounce of copper per square foot but some PCBs that handle very high power may use 2 or 3 ounce copper. Both solder masks defined (SMD) and non-solder mask defined (NSMD) were studied. To quickly fill panels with PCB orders, most shops require the circuit boards to have "standards specs" like FR4 Tg 135 material, 1 oz copper, green solder mask and white silkscreen (top, bottom or both sides). There are many reasons to avoid solder mask coverage on RF conductors, due to inherent solder mask properties. Contact: IPC 3000 Lakeside Drive, Suite 309S Bannockburn, Illinois. Note: Wet/Liquid Photo-Imageable solder resist/mask is recommended. 3oz copper thickness 2 layer pcb lpi red solder mask printed circuit board fr 4 material 2layer pcb. Wet that piece and place it on where you want to solder. 2mm for CNC milling, and ±0. copper thickness: mm: inch. It is best to check with your manufacturer regarding their capabilities and available materials when selecting a solder mask color, thickness, and other manufacturing tolerances while designing your board. Solder Mask Surface Finish Traces Surface Mount Pad Laminate The PCB Solution That's Right For Your Supply Chain Typical thickness: 70 micro inch - 200 micro inch. Solder Mask Thickness Selection. And the solder mask clearance is the space that is needed around the solder mask. 3M™ high temp tapes can withstand temperature ranges from -100 deg F (38 deg C) up to 500 deg F (260 deg C) during the solder. Most boards have a epoxy-ink soldermask printed onto each side to protect the copper surface and prevent solder shorting between components during assembly. Find the most up-to-date version of TM-650 2. What are the benefits? Better electrical insulation, less risk of flaking or loss adhesion and greater resilient to mechanical impact. jet solder mask:. How to determine optimal thickness of the copper conductor layer on your custom circuit board PCB’s connect us with the world A printed circuit board, (PCB) is a wafer like board found in electrical devices and equipment including: TV’s, small electronics, home appliances, and cars. Source from Hangzhou Yuan Ye Imp. Solder Mask Two types of PCB solder mask openings commonly used for surface mount leadless style packages are: 1. Walfront 2Pcs UV Light Curing Solder Mask Ink BGA, PCB Solder Resist Ink Black + Green. 2 Including A Solder Mask In Your Design. Figure 3: 0. With a usual solder pad width of 200 µm it is also possible for 0. The freescale app note states that the solder mask should overlap the thermal pad by at least 0. There is a huge improved to placement & scaling of solder dams. 0762mm) Covers retraction, expansion, and shift: Silkscreen minimum line width: 5 mil (0. Solder may overhang the pad but must not touch the non-soldered portion of the component package body. I found the following video helpful. In this case, we have solder mask on ENIG or galvanic nickel-gold. 3 final bake, two process bake , 110. Solder mask color. drilling slot size: 0. (Don't confuse solder mask with conformal coating. So, the solder mask is at least 25 microns. BEST PCB repair kits give you the tools you need for fast repair and modification of lands, traces, contact fingers, SMT pads, plated hole connections and PCB base board material. The Peelable Solder Mask is meant to serve a very specific purpose: to protect specific areas on the PCB during the Reflow Soldering , Wave Soldering , or Surface Finish process. 075mm on all sides. Public details available include frequency information, internal & external photos, and manuals. The solder mask should have a minimum of a 0. Therefore various ink types are available for specific fields of application. A solder joint thickness of 40 µm +/-10 is targeted to limit the risk of contact between the solder paste and the side of the capacitor. By DHL, UPS, FedEx, TNT using clients account. For those order that there are some layers missed, such as no solder mask layer, no board outline and drilling, we will cancel the order directly. The solder volume over the solder resist is identical to the mask hole volume. To give the film a bit more "grip", I added a drop of alcohol to the back of the mask so that it would stick to the blank film. Not only will methlyene chloride based strippers quickly remove the solder mask, they'll deteriorate the base material if exposed to it for a prolonged period. The Peelable Solder Mask is meant to serve a very specific purpose: to protect specific areas on the PCB during the Reflow Soldering, Wave Soldering, or Surface Finish process. It must be soldered directly to the thermal pad on the bottom of the IC. 2 Bottom layer copper 70 398 Electroless Nickel/Immersion Gold (ENIG) 5 4. 8MM Green Solder Mask factory in China, Find Complete Details about Four Layer Multilayer Printed Circuit Custom Pcb Board 0. One-Off Solder Mask This document outlines how to take an EAGLE layout, a printed circuit board manufactured using the Protomat C60 circuit board cutter, Kapton tape (1 mil thick), and a Universal Laser VLS 3. For 18um (1/2 oz. Maximum fill. This recommendation should be matched to local conditions. Applying soldermask is one of the most important process in board manufacturing. Solder mask thickness control of thick copper PCB. NASA-STD-8739. Solder paste and patch glue are all thixotropic and sticky. jet solder mask Inkjet printer. From the Engineer's Toolbox the emissivity coefficient of "copper, polished," is between 0. 2 Layer PCB board with Blue solder mask. But, because the solder cannot wet to the solder mask, it will affect the geometry of the solder joint, with high stress created at the solder mask opening edge which decreases the fatigue life compared to NSMD lands 2 (Fig 3). Alpha is a provider of high performing materials for SMT Assembly Solutions, Wave Solder Assembly Solutions, PV Assembly Solutions, Die Attach Assembly Solutions and Industrial Assembly Solutions. The required diameter of the opening should. Techspray’s WonderMASK is the industry-leading temporary solder mask brand because of quality and versatility. China Colorful Solder Mask Printed Circuit Board, Find details about China Circuit Board, PCB from Colorful Solder Mask Printed Circuit Board - Shenzhen Hongmy Precision Circuit Co. Why masking? • a. One reason that green solder mask is extensively used is that it can be used to create thin solder mask dams (~0. — The qualification of the solder mask/standard IPC-B-25A test board (Table 1, Column B). Board Thickness 8 to 125 mils (0. June 21st, 2020 Solder Mask Registration. China Manufacturer OEM Prototype PCB Board Assembly PCBA, Find details about China PCBA, PCBA Board from Manufacturer OEM Prototype PCB Board Assembly PCBA - Changzhou Yunbo Electro-Optics Tech Co. If the mask is thick it creates a cavity around the pad where flux vapours are trapped forming a bubble. Multilayer high precision PCB’s with impedance control. Unlike older epoxy inks that were applied using a screen that blocked off pads that required solder or other finishes, LPI inks are sensitive to UV light. Ball Material Solder (63/37) Ball Pitch 1. Appendix 2: Q100 Certification of Design, Construction and Qualification. 5: 1: 1mil is only concentrated in the BGA area. And in this case it has to be at least 0. 5MM Thickness DIY Prototyping PCB Board 4. China Disposable PP Non-Woven Fabric Face Mask Machine, Find details about China Mask Making Machine, Mask Machine from Disposable PP Non-Woven Fabric Face Mask Machine - Shenzhen Shuangshi Technology Co. The solder mask thickness over the laminate will typically be 0. demands placed upon solder masks by the rise in surface mount technology. Supplier Name: Date: The following information is required to identify a device that has met the requirements of AEC-Q100. In fact, the Peelable Solder Mask is a different entity altogether, and in many cases the PCB Assembly Process requires that both of these masks be applied to the board. Unless specifically prohibited by the customer. Solder mask may not always be use. You can also customize Solder Mask orders from our OEM/ODM manufacturers. The source for cheap pcb solder stencils and foils. Surface finish: HASL. Legend (Silk screen) Height: 30mil Min. In the SMD pads, the edge of the solder mask can be a stress initiator at the base of the solder ball, which can. com provides numerous search tools, including location, certification and. Coverlay is more robust and flexible than solder mask. Both solder mask and silk screen can be applied in several different colors and finishes, depending on function and aesthetic wishes. How to Measure Solder Mask Thickness. The thickness of copper traces and the complexity of the PCB design guide for the solder mask material thickness. Attributes It is a transparent, green material, which we provide in 75 microns (3 mil) thickness, 305 mm width and roll lengths of 25, 76 or 152 meters. The ball-attach and reballing processes influence the fi-nal solder joint of BGA package. 3mm 50µm Surface Finishing ENIG (NiAu), OSP, ENIG+OSP, Immersion Tin, Immersion Silver YES Advanced Material YES YES YES YES YES IT158, EM825, S1000 H, TU662, NP-155FTL, IT180A, S1000-2, S1170. 4 Layers or more will abbey this max. What are your requirements for solder mask? IPC SM-840D classifies solder mask, Class T and Class H. In case of blue solder mask color, magnification is considered necessary and is mandatory for inspecting the defects of manufacturing. To quickly fill panels with PCB orders, most shops require the circuit boards to have "standards specs" like FR4 Tg 135 material, 1 oz copper, green solder mask and white silkscreen (top, bottom or both sides). 50 / Piece, PCB-4, Zhejiang, China, Zhejiang,China, YY, YY. copper thickness: mm: inch. 75mm, but other thicknesses will also work. China High Quality Blue Solder Mask Immersion Gold PCB, Find details about China PCB, PCB Manufacturing from High Quality Blue Solder Mask Immersion Gold PCB - Zhejiang Oulong Electric Co. ) base copper thickness (/70um finished Cu), the specification and. 3 IPC-6012 - Plating thickness Plated Copper Filled Microvias. This Solder Paste Stencil are custom-made for your PCB using your Gerber or CAD files. Board Thickness 8 to 125 mils (0. size standard. Non Solder Masked Defined (NSMD) 2. I used a standard (!) footprint with 0. OPARYY Welding Helmets Transparent Lens Anti-UV Anti Shock Welding Helmet Face Shield Solder Mask Professional Protect Tool 1. The solder-joint thickness for QFN terminal leads should be 50um to 75um As a general rule, stencil thickness is 100~150um and 125um is recommended for QFN packages. The QFN is a 0. 075mm on all sides. Operator foolproof! Panels cannot be inserted into the knives except on the score line. One reason that green solder mask is extensively used is that it can be used to create thin solder mask dams (~0. 10 mm (a dam is the minimum track size of solder mask). 4 mm pitch ball grid arrays (BGA). > Several SI books provide formula to calculate microstrip impedance,. Pneumatically driven. Category: 6 Layers Black Solder Mask PCB Board Thickness: 3. CC3100MOD Solder Paste / Solder Mask. IPC-6012 2. It has to withstand extreme soldering temperatures and still be removed easily and efficiently at the end of the PCB assembly process. 3D model of conductor and vias. As the solder mask broke down, it flaked off the PCB into the solution. After applying the epoxy resin material to the PCB, it is dried and then exposed to the required image, which develops the desired solder resist pattern on the PCB. At half the thickness of our other masking tape for electronics, this polyimide tape conforms easily. whether the solder mask thickness will be important in defining the joint volume. 1) This standard covers: — The evaluation and conformance of permanent solder mask material properties (Table 1, Column A). It's in some way similar to what is done today with solder mask—cover the entire area with the same ink thickness. 862 - Peelable Solder Mask It provides effective protections of contacts, gold fingers, printed circuit card edges and it can be easily peeled off once the wave soldering process is done, after a subsequently applied conformal coating is sufficiently dry. 50mm SMT PCB Assembly Green Solder Mask Copper 1OZ AOI X-Ray Function Test from China FR4 Printed Circuit Board manufacturers. This solder resist enable smooth surface, thin thickness and low warpage. 3% for most RF/microwave circuit laminates, and it is clear that both parameters of a PCB laminate will be affected by the contributions of an LPI solder mask. Over the knee of a circuit the solder mask might be as thin as 0. The thickness of processed solder -mask was in this study up to 13 µm. As the solder mask broke down, it flaked off the PCB into the solution. In example for PCB-POOL orders: The applied solder pad is increased 0. NASA-STD-8739. Chemask ® is a fast curing peelable solder masking agent. 4400 [email protected] The stencil was 127 µm (5 mils) thick and the apertures were 254 µm (10 mil) rounded squares. Tel:86-0755-86229518. Wet that piece and place it on where you want to solder. Experiential PCB manufacturers usually stipulate specific coating thickness due to considerations of equipment capability and their manufacturing experience. Solder Mask Two types of PCB solder mask openings commonly used for surface mount leadless style packages are: 1. A part that has a ground tab directly attached to the board will have a CAD PCB footprint that supresses the solder mask under the device and has a opening for solder paste in the stencil. What are your requirements for solder mask? IPC SM-840D classifies solder mask, Class T and Class H. 003 TYPICAL =. The required diameter of the opening should. Mask Musings. type, and print speed were examined. Dry film solder mask,75 micron thick. 5-4: 4-6 >6: solder mask: 23: solder mask: green solder mask opening(mil) ≥2mil: 1. The pre-solder bump volume above the solder resist can be changed easily by changing the mask hole size and / or the mask thickness. Discover the best High Power LED PCB Board Single Layer Led Display PCB White Solder Mask factory in China, Find Complete Details about High Power LED PCB Board Single Layer Led Display PCB White Solder Mask,led driver pcb board,led light bulb circuit boar & Accessories Supplier or Factory - Shenzhen Lefang Electronics Co. 1 Via Holes [51] Via holes should have solder mask openings on both sides of the board centered about the hole, as shown in Figure 33. Once you're happy with the resin application, place the solder mask film over the PCB and line up the artwork. Solder mask or solder resist is a coating applied to a Printed Circuit Board (PCB) to protect the copper traces on the board and to stop electrical shorts. Each ounce per square translates to about 35 micrometers or. 1mm, with a 0. This equals 1. Ask Question Asked 2 years, 4 months ago. There are many reasons to avoid solder mask coverage on RF conductors, due to inherent solder mask properties. For the BGA solder mask, many companies provide a solder mask that does not contact the pads but covers any features between the pads to prevent tin bridges. Figure 3 shows the commonly used Solder Mask Defined (SMD) solder pad for flip chip dies. The cover materials described herein, when applied to the printed board substrate, shall provide a flexible dielectric protective layer over the etched conductors and other conductive features. The solder mask opening around the PCB pads can be as large as the spacing between the pads. This layer protects much of the copper surface of the PCB from oxidation and allows the other conductors of the outer layers to remain isolated during assembly processes. Actual processing time will vary due to chemical temperature, solder mask composition, and solder mask thickness. The solder mask material shall retard electromigration and other forms of detrimental or conductive growth. 3 Solder Mask Thickness in Table 1 in IPC-6012DA. Third: the normal pressure on it. For applying legend ink, solder mask should be cured for 30 minutes at 150deg. Troubleshooting mask issues such as peeling or lifting after the ENIG process starts with understanding the origins of the defect. Use it to mask components while soldering or to wrap and splice cables. Figure 2 shows an example of the recommended dimensions. Inner and outer copper thickness (OZ) 0. Thus, the solder mask coated boards had relatively stable SIR curves after a stabilization period, but the boards without solder mask had more intermittent SIR drops throughout the test. Then let it dry. Quality 6 Layer High Frequency, Material HDI PCB Blue Solder Mask BGA for sale - buy cheap 6 Layer High Frequency, Material HDI PCB Blue Solder Mask BGA from Multilayer PCB manufacturers & Multilayer PCB supplier of China (103772923). The stencil was 127 µm (5 mils) thick and the apertures were 254 µm (10 mil) rounded squares. Free Online Library: Peelable solder masks in modern PCB fabrication: potential fields of application and processing abound as this handy device nears 30. Another common use for temporary solder mask is to protect contact areas and chemically sensitive components when spraying or dipping conformal coating. Provided is a two-step, dual-thickness solder mask material on the substrate surface. We can only conditionally recommend vias (vias) covered with solder-stop. One-Off Solder Mask This document outlines how to take an EAGLE layout, a printed circuit board manufactured using the Protomat C60 circuit board cutter, Kapton tape (1 mil thick), and a Universal Laser VLS 3. Take the piece you wish to solder on , we now use a neat 10mm stainless machined round bar opposed to nuts. Over the circuit traces the solder mask will be around 0. Metal cladding shall be removed by etching, using IPC-TM-650, Test Method 2. Yoshioka, "Flame resistant thermosetting resin composition and. Solder mask may not always be use. A vast range of electronics products have utilized 2. 625mm Width ≥0. The pinholes are mainly from contaminated particles (degreasing, micro-etching, plating tanks, etc. Solder Mask is the protective coating applied to the surface of most circuit boards, usually leaving only the solderable areas exposed. Solder mask Parameters. 001-69061 Rev. The combination results in the exposure of electronic equipment to a variety of climatic conditions. Solder paste thickness inspection BT-460 is mainly used to measure the thickness of solder layer on PCB. Each has its own characteristics and advantages. Thank you for the information. 003 TYPICAL =. 1 Adhesion, Solder Resist (Mask), Tape Test Method TM 2. Category: 6 Layers Black Solder Mask PCB Board Thickness: 3. The composition of the PCB was traditional FR4 with copper layers of 18µm in thickness. Looking for abbreviations of DFPISM? Dry Film Photoimagable Solder Mask listed as DFPISM. Separates boards up to 2. Specially formulated acrylic adhesive is resistant to typical solder mask temperatures for short periods of time. Soldermask is functionally the "mask layer" that defines the size and location of all of the solderable surfaces of a PCB. In some cases, for special applications, the final finish may be applied before solder mask. 5 mils of material over PCB. The mask serves the original intention of soldermasks in general by coating areas of the PCB that do not require any of the various final plating finishes that are available today. Why Gold-Tin is the Best Solder Alloy Posted by Janine Powell on Tue, Nov 22, 2016 @ 02:05 PM There are literally hundreds of solder alloys available from very low melting points from 38°C to extremely high brazing melting points to over 1000°C. Solder mask color: Solder mask is available in different colors, but those colors can impact the manufacturability of the board. We've compiled a database and overview of IPC SM-840D as a resource for you - database. The solder mask should have a minimum of a 0. PCB Mounting Guidelines for Surface Mount Packages [APPLICATION NOTE] Atmel-8826B-SEEPROM-PCB-Mounting-Guidelines-Surface-Mount-Packages-ApplicationNote_042016 4 2. 2 layer, 4 layer, and 6 layer PCBs. Because board thickness can vary, you'll want to use a spring-loaded tip. 2 mm Fr-4 4 Layer Immersion Gold Bare PCB Circuit Board for Consumer Electronic with Black Solder Mask, Find details about China Printed Circuit Board Manufacturer, China PCB Manufacturer from Min Hole 0. FREE Shipping. The fact that a minimum solder mask web width of not less than 70 µm is used must be taken into consideration. undefined solder pads by party mask? I know in UB gerberas can be exported with expanded solder mask openings. For applying legend ink, solder mask should be cured for 30 minutes at 150deg. 05mm) larger than the copper feature on all sides to ensure no mask is accidentally printed on the copper. Solder mask or solder resist is a coating applied to a Printed Circuit Board (PCB) to protect the copper traces on the board and to stop electrical shorts. This layer protects much of the copper surface of the PCB from oxidation and allows the other conductors of the outer layers to remain isolated during assembly processes. Discover the best Model HSPCB1648 OEM / ODM Rigid Double Side PCB Assembly Green Solder Mask factory in China, Find Complete Details about Model HSPCB1648 OEM / ODM Rigid Double Side PCB Assembly Green Solder Mask,Double Sided Printed Circuit Boards,soldering double sided pcb & Accessories Supplier or Factory - Guangdong Henvcon Electric Power Technolohgy Co. C for 60 minutes. According to IPC 4552, typical Nickel plating is 3-6 micron and gold plating is minimum 0. Minimum "Solder Mask Sliver" means the pip of Soldermask between the pads. In PCB design, the surface mount solder pads can be defined as either Solder Mask Defined (SMD) or Non-Solder Mask Defined (NSMD). The solder mask coating was cured using a single lamp Ashdee 200 watt per inch medium pressure ultraviolet radiation machine. 3M™ high temp tapes can withstand temperature ranges from -100 deg F (38 deg C) up to 500 deg F (260 deg C) during the solder. Detail: 2 Layers 35um Copper Weight Green Mask PCB Prototypes Witrh 1. 50: Peelable mask opening larger than conductor by min size: mil: 7: 6: Min space from peelable mask to pad(min) mil: 16: 14: Max plugged via size for peelable mask: mm: 5 : Gold finger: Ni thickness standard: um: 3-5: Au thickness standard: um. You should pay special attention to solder-stop bridges (solder-stop between two pads or vias), which should not be smaller than 100µm (green solder-stop) or 150µm (coloured solder-stop) respectively. Solder Mask What is Solder Mask? Solder Mask is a protective coating applied to the bare printed circuit board. However, solder does not stick to mask, so the area underneath will remain solder-free. The PCB color code for green is #008C4A. As compared to red and green printed circuit boards, the contrast between empty spaces, planes, and traces is very low. Ceasolder-AL (Acrylic Latex) Peelable Solder Mask DESCRIPTION Ceasolder- AL is a temporary, peelable solder mask comprised of a thixotropic, synthetic acrylic latex designed to withstand fluxing, wave soldering and cleaning operations. The solder mask is a Liquid UV Photo-imageable Ink which is usually green in color. The solder mask width was 0. Discover the best High Power LED PCB Board Single Layer Led Display PCB White Solder Mask factory in China, Find Complete Details about High Power LED PCB Board Single Layer Led Display PCB White Solder Mask,led driver pcb board,led light bulb circuit boar & Accessories Supplier or Factory - Cinda Advertising Solutions Co. In example for PCB-POOL orders: The applied solder pad is increased 0. fusion of solder M705-GRN360-MZ sensor Cu plate Solder bath Temp. 65: Copper/aluminum base thickness(mm) 1. for solder mask stripping to occur (45-120 minutes for Ristoff C-8 and 15-60 minutes for Magnastrip 500). The specification is intended to facilitate evaluation of solder mask by a vendor using a standard board system, and to enable designer, manufacturer, and user together to qualify a production board. The three formulations are suitable for different application and removal techniques. Pcb sepecification: base material; board thickness; copper thickness; color of solder mask and silkscreen; surface finished. Temporary latex solder masking agent for protecting PCB’s from solder and flux overflow during soldering. The mask material will comply with IPC-SM-840 Type B, Class II. 5: Copper foil (Oz) 2: Surface finish: Lead-free HASL: Solder mask color: thermal conductivity. 2mm Thickness Prototype PCB Board Black Solder Mask IPC-A-160 Standard. What is Copper Thieving? Copper Thickness. 25um(1mil) - cfr IPC A600. 5 thou and 2. SnAgCu solder 75 58 Top layer copper 70 398 FR-4 dielectric 1588 0. This equals 1. 3 final bake, two process bake , 110. The solder mask is an essential element in printed circuit board manufacturing. 2mm for V-cut: Solder Mask: LPI: We have green, red, white, yellow, blue, black and matte black solder mask. The requirements for a particular soldermask will be determined by PCB conductor thickness, circuit density, viaholes, and types of components to be attached to the PCB, such as surface. Selecting green solder mask will also allow the client to achieve tighter tolerances. Now, we go into greater depth discussing the two primary options for encapsulating the external circuit layers of a flex circuit: polyimide coverlay and flexible liquid photoimageable (LPI) solder mask. Introduction H-9100/H-8100 is a two component liquid photoimageable solder resist ink, used for the solder mask manufacturing of high-precision circuit board, with excellent heat resistance, chemical resistance and insulation of the film. Pad area and thickness control solder paste volume. Minimum Solder Thickness: 7: Evidence of proper. Solder mask and silk screen Information retaining the use of solder mask or solder resist is contained within IPC-SM-840C along with specifications of performance of permanent solder resist. solder mask or on the board metallization and they are present around all different component types. The source for cheap pcb solder stencils and foils. For the BGA solder mask, many companies provide a solder mask that does not contact the pads but covers any features between the pads to prevent tin bridges. Type: black solder mask PCB final board thickness: 0. Instead, the mask is created such that a gap is created between the edge of the pad and the solder mask. Techform TC-533 Peelable Solder Mask TC-533 Prevent soldering protected areas in a wave soldering process by applying temporary solder mask. After applying the epoxy resin material to the PCB, it is dried and then exposed to the required image, which develops the desired solder resist pattern on the PCB. Because board thickness can vary, you’ll want to use a spring-loaded tip. Solder Mask. Public details available include frequency information, internal & external photos, and manuals. size standard. Solder mask can be applied in dry (film) or liquid forms. Solder mask is an often-overlooked component of an RF/microwave printed-circuit board (PCB). 50: Peelable mask opening larger than conductor by min size: mil: 7: 6: Min space from peelable mask to pad(min) mil: 16: 14: Max plugged via size for peelable mask: mm: 5 : Gold finger: Ni thickness standard: um: 3-5: Au thickness standard: um. And, these are the few problems with wave soldering: • Higher consumption of electricity, flux, solder, and nitrogen • Need for solder rework • Extra sensitive points masking • Extra cleaning of soldered assemblies wave solder aperture masks or pallets. This layer protects much of the copper surface of the PCB from oxidation and allows the other conductors of the outer layers to remain isolated during assembly processes. Apply solder resist digitally with our n. Solder mask color: green, red, yellow, blue, white, and black. > Several SI books provide formula to calculate microstrip impedance,. Metal cladding shall be removed by etching, using IPC-TM-650, Test Method 2. SMT Pad Space 8mil) Min. Standard colours: white Colour options: black, yellow. I prefer a thickness of 0. base copper. Traditionally, solder masks have provided their green color to PCBs but solder masks are now available in many other colors as well as in lead-free versions. China Colorful Solder Mask Printed Circuit Board, Find details about China Circuit Board, PCB from Colorful Solder Mask Printed Circuit Board - Shenzhen Hongmy Precision Circuit Co. regarding solder resist requirements are contained in IPC-6012 and IPC-SM-840 IPC-6012B par 3. It's So Much Easier with a Solder Paste Stencil June 02, 2016 by Charles R. Solder Mask Thickness Over Metal IPC SPEC COVERAGE (SPC RANGES. Solder Mask Design Requirements Solder Mask Assessment Solder Mask Variables Thickness Application methods Finish (Gloss/Matt) Cure Conditions Supplier product Measurement Technqi ues Pencil Hardness Contact Angle Die Pen Thickness Roughness Mci ro Hardness (ndenti er) SIR Capacitance Gloss Reflectance Process Evaluation Reflow Solder balling. One process, called "tenting," uses solder mask to prevent solder from either entering or exiting the thermal vias, depending on the side of the board to which the solder mask is placed. 8 mils or higher. Coverage is given to adhesion, material. Dry Film Thickness;. This innovative solution has very low stress as it is bonded with very short laser pulse and requires no mechanical contact. Capacity & Capability. solder master supply company Solder Master Supply Company is a leading distributor of tools and supplies for electronic manufacturing. The solder mask color is just one of many important points that will determine the type of solder mask that can be used on your board. Specially formulated acrylic adhesive is resistant to typical solder mask temperatures for short periods of time. Die thickness: 15 mils ± 1 mil: B: Epoxy thickness: 2~4 mils: C: Distance between encapsulation edge to solder ball: 10 mils (Min. IPC-6012 or IPC-A-600 Which Standard is Right One For Me. BEST PCB repair kits give you the tools you need for fast repair and modification of lands, traces, contact fingers, SMT pads, plated hole connections and PCB base board material. The “MP” solder mask had a slightly higher organic content than the “DM” material, but both solder mask surfaces had an extremely low organic content. For enhanced thermal, electrical, and board-level performance, the. The pre-solder bump volume above the solder resist can be changed easily by changing the mask hole size and / or the mask thickness. Soldermask Thickness. It makes it easier to ensure the PCB reliability and high performance. 5: 1: 1mil is only concentrated in the BGA area. Discover the best Double-sided PCB Board with Immersion Gold Surface Finish, 1oz Copper Thickness/Green Solder Mask factory in China, Find Complete Details about Double-sided PCB Board with Immersion Gold Surface Finish, 1oz Copper Thickness/Green Solder Mask & the factory in China. IPC previously classified solder mask as Class 2 and Class 3 compliant, but have since changed to T and H. Viewed 4k times 1 \$\begingroup\$ I am running DRC in Altium Designer and Im getting tons of "Silk to Solder Mask Clearence" Errors. com Page 1 of 11 TS7021N. 3mm Finished Surface Process:ENIG. Introduction Due to the trend in mobile app lication to reduce thickness and size of devices, there is an increasing request from the industry for extremely small 0201 size components. 862 - Peelable Solder Mask It provides effective protections of contacts, gold fingers, printed circuit card edges and it can be easily peeled off once the wave soldering process is done, after a subsequently applied conformal coating is sufficiently dry. IPC also recommends 100 microns of expansion from the metal layer so that would put the maximum pad size at 200 microns or 0. The Techspray 2222-8SQ Wondermask PX Peelable Solder Mask is a specially formulated temporary, peelable latex solder mask that dries quickly. Path: Top Products >> Electronic Components >> PCBs & Manufacturing Services >> Blue Solder Mask manufacturers – Update me on new products 1,585 Blue Solder Mask results from 291 Manufacturers Verified Manufacturers Accepts Sample Orders Accepts Small Orders Product Videos Sort by Relevancy Supplier Rank: Descending Date Product Posted. com Introduction Intermetallic compounds (IMCs) are generally considered a bad thing in solder joints, though this is not always the case. Equal to the solder thickness plus 25%, or equal to the solder thickness plus 0. Solder Mask Thickness Selection. Solder mask relief is an area on the surface of the PCB that does not have solder mask — these locations typically surround SMT pads, through hole pads, test points and vias as a margin of error…. 006" Mask Defined Pad Minimum Overlap of Copper. (30 micron) or greater copper thickness causes a lower effective solder joint stand-off, which may. Multicore Temporary Solder Resists have been formulated for use in most commonly found forms of mask application. Ø62JJ Finish: ENIG Material: FR4 Copper Weight: loz Solder mask: Top and bottom Silkscreen: Top and Bottom Silkscreen Color: Black Solder mask Color: white green 5'/' blue Min Drill: e. 2mm (8mils) or more. Work on lap joints indicates that for tin/lead solder (60/40), the ideal joint thickness for maximum shear strength is 75-100 microns. The latest automatic LED solder mask exposure system possesses several patents of invention. to isolate copper surface, microstrip line, from air. Gerber files and PCB designing software have the provision of adding the solder mask material over PCB. Solder beads comprise a specific category or subset of solderballs. tion about and confidence in the solder mask material under evaluation with the minimum of test redundancy. Can I just use a small precision knife for the same purpose, or am I likely to damage. Over the circuit traces the solder mask will be around 0. 8 mils or higher. Thus, the solder mask coated boards had relatively stable SIR curves after a stabilization period, but the boards without solder mask had more intermittent SIR drops throughout the test. SMD solder pads are used to avoid solder flow out on the part of the tracks. SPECIALIST SILK SCREEN TECHNIQUES Silver inks Conductive inks. Provided is a two-step, dual-thickness solder mask material on the substrate surface. 1 Moisture and Insulation Resistance - Solder Masks TM 2. The solder is generally repelled by the oxides on the aluminum surface, but as you break through the oxide layer molten solder can form intermetallics with the aluminum. 80 - I am using paint as an analog for solder mask. The lower thickness and the possibility of patterning thin film solder pads make completely different assembly approaches possible, e. A thickness less than 10 microns will make the mask more sensitive to heat and chemicals and overall increase general exposure sensitivity. We've compiled a database and overview of IPC SM-840D as a resource for you - database. 2 layer, 4 layer, and 6 layer PCBs. Wondermask P Peelable Solder Mask 2211-8SQ prevent soldering protected areas in a wave soldering process by applying a temporary cover. Determining the thickness of the solder resist layer implies measuring a non-conductive coating on top of copper - a clear case for using the amplitude sensitive eddy current method. The remaining land between the pads must be at least a width of 0. NCAB specifies soldermask thickness, IPC does not. It is also possible to have tin or tin-lead under solder mask; this was an old technology that no longer plays a role. Over the knee of a circuit the solder mask might be as thin as 0. Features: Temporary, peelable. This low cost protection is low cost and produces a uniform surface of good solderability. ℃ 30min, 150 , 60min. Kester TC-527 can be thinned with water and uncured mask left on equipment can be removed with water. 60mm Thickness Green Solder Mask For Ups Pcb Board factory in China, Find Complete Details about NANYA Fr4 PWB Circuit Board 1. WonderMASK has a number of useful applications in PCB assembly:. According to IPC 4552, typical Nickel plating is 3-6 micron and gold plating is minimum 0. Using the alignment bracket as your guide, place the PCB back onto the spoilboard. Solder mask: Liquid Photoimageable Mask, peelable Mask, Dry Film Mask. Well, that might have been true in 1981, but not now. The boards outline image may be made on the screen using conventional stencil material or masking tape and screen filler. All rules are resolved by the priority setting. Unsuccessful attempt at removing solder mask using a T-Tech QuickCircuit 5000 PCB Prototyping System and a 1/8” diameter carbide endmill specifically designed for working with soft media inlays. Our typical thickness in and around the conductors is about 1 - 1. avoid between two electrical components during soldering, testing. 0762mm) (short lines, text. In terms of electrical properties, the soldermask thickness will have a very large impact on the impedance, the safety and the feasibility of PCB assembly, so. SOLDER MASK 2 pack epoxies Liquid photo-imageable. Unlike older epoxy inks that were applied using a screen that blocked off pads that required solder or other finishes, LPI inks are sensitive to UV light. on their design. com Introduction Intermetallic compounds (IMCs) are generally considered a bad thing in solder joints, though this is not always the case. 0007 over conductor) Solder Mask Colors Green, Blue, Red, Black, Yellow, Clear Solder Mask Type Taiyo BSN4000 Minimum Mask Defined Pad Diameter. Wondermask® PL Latex. The solder mask is first printed or sprayed on to the production panel and then UV-exposed with the correct solder mask pattern, developed and dried. Acceptable Silk to Solder Mask Clearence. 4mm diameter from Accurus Scientific with three types of Pb-free composition were studied as given in Table 1. Maybe we can make the board thinner where the connectors clamp on. Proper pad design is critical to solder your components onto your board efficiently. This technique is known as the dry film solder mask. 2 Bottom layer copper 70 398 Electroless Nickel/Immersion Gold (ENIG) 5 4. From the thermal aspect, it is disadvantageous to overprint thermal vias with solder mask as the thermal resistance of the thin solder mask layer, due to its poor heat conductivity, is of a similar magnitude to that of the TIMs. (30 micron) or greater copper thickness causes a lower effective solder joint stand-off, which may. Because board thickness can vary, you’ll want to use a spring-loaded tip. 5mmto the score line, including ceramic capacitors. GENERAL REQUIREMENTS (cont. Flexible, solvent resistant latex for masking components, connectors and other items during a conformal coating process and particularly suitable for protection of ingress of conformal coating such as pin connectors & IC sockets. The cover materials described herein, when applied to the printed board substrate, shall provide a flexible dielectric protective layer over the etched conductors and other conductive features. There are 2 common types of soldering methods for an exposed pad package - Solder Mask Defined (SMD) and Non-Solder Mask Defined (NSMD). scope: The dielectric strength test (also called highpotential [Hi-Pot], over potential, or voltage breakdown) consists of the application of a test voltage for a specific time between mutually insulated portions of a printed board or between insulated portions and ground. 2 Lead finger stencil design For stencil thickness of 100um, area ratio is 0. LPSM can be silkscreened or sprayed on the PCB, exposed to the. 0 mil thickness of coating. On the side edges and top of the conductor, you'll want a thickness greater than 7 micron. The solder mask should have a minimum of a 0. 86, terminal-pad paste transfer efficiency is 89%, 100% for the thermal pad. PCS - Peelable Coating Mask. Natural latex rubber high-temperature solder mask. Thickness: 15 mil: Type: Solder Mask: Viscosity: 9000 to 15000 cps: Weight: 8 Oz. Espanex M Series > NOTES General safety information. The choice of mesh should be made according to the thickness of solder mask required and the ease of encapsulation of the tracks. The minimum solder resist strip width required to avoid solder bridging adjacent pads is 0. Not only will methlyene chloride based strippers quickly remove the solder mask, they'll deteriorate the base material if exposed to it for a prolonged period. Dry Film Thickness;. 6] UNACCEPTABLE. 6mil; Solder Dam 4mil for green colored solder mask, and 5mil for solder mask of other colors. Green Liquid Photo Imageable solder mask (LPI) will be applied over bare copper traces. If your PCB design is simple, you could DIY your own solder mask template with a sharpie. 20 minutes 2 cycles. Therefore various ink types are available for specific fields of application. Previously, we gave you the definition for flexible circuit coverlay. Viewed 4k times 1 \$\begingroup\$ I am running DRC in Altium Designer and Im getting tons of "Silk to Solder Mask Clearence" Errors. IN STOCK: best prices on Multicore Loctite 292959 MSC 1000S Spot-On Solder Mask 250ml - choose between 31 Solder wire. Benefit from the numerous advantages of the n. The solder mask should have a minimum of a 0. 0 out of 5 stars 1. PI Thickness um 25, 50 25, 38, 50 25, 38, 50, 75 12. Solder bridge: 0. Processing Peelable solder masks are typi-cally processed while observing the following (see Table 1): Ink film thickness Basically, all peelable solder masks need to be applied very thickly in order to meet all the. Soldermask is functionally the "mask layer" that defines the size and location of all of the solderable surfaces of a PCB. • Min laminate and prepreg sheet thickness • Min starting external Cu foil thickness (and max if >102microns) • Min dielectric build-up thickness • Min laminate and prepreg (and max if >102microns) • Max internal Cu thickness ppg sheet thickness Mass • Min dielectric build-up thickness • Min starting Cu foil thickness (and max if. Adjacent Land Keepout and Solder Mask Areas 1. There is more pigmentation in the darker color solder masks (blue, black, white). How to determine optimal thickness of the copper conductor layer on your custom circuit board PCB’s connect us with the world A printed circuit board, (PCB) is a wafer like board found in electrical devices and equipment including: TV’s, small electronics, home appliances, and cars. Dimension: 510*590mm: We could do 580*620mm max. If you are not sure, our design staff can choose the optimum thickness based on the data you supply. The solder mask material shall retard electromigration and other forms of detrimental or conductive growth. The mask layers in Gerber data are negative images, which means that the colored areas are those that won't be covered by the mask. 25mm pads, so the pad-to-pad gap is 0. Kester TC-527 can be thinned with water and uncured mask left on equipment can be removed with water. On average how many locations should we measure on our PCBs to confirm our solder paste thickness? Our PCBs are approximately 10" x 10". Thickness is limited to ¾ to 1 mil over the base core but will be less directly over top of traces. Designed to apply smoothly, dry quickly, withstand high leadfree process temperatures, and then be removed easily. How are solder beads. Multilayer high precision PCB's with impedance control. How to Measure Solder Mask Thickness. Solder mask thickness over the laminate. In different regions of the world and even in the United States, the environmental conditions can vary from 21 C at 10% relative humidity to 38 C and 100% relative humidity. On the side edges and top of the conductor, you'll want a thickness greater than 7 micron. The vast majority of PCBs have 1 ounce of copper per square foot but some PCBs that handle very high power may use 2 or 3 ounce copper. These materials, packaged together and designed by one of the premier PCB repair companies, BEST Inc. 3 mm (0201),. The recommended dimensions are shown in Figure 3. 2mil: Solder Mask Resolution Solder Dam: Green(2 oz ): 4mil Other Color" 5mil. Solder resist or mask should be level with the pad surface or below it for the ideal assembly conditions. Now it's time to use the SVG file you made in Step 1. Unlike older epoxy inks that were applied using a screen that blocked off pads that required solder or other finishes, LPI inks are sensitive to UV light. Serving the maker community since 2013, focusing on SMT and SMD based stencils for solder paste electronic circuits and electronic design applications. For 35um (1oz) and 53um (1,5 oz. 1mm Circuit board. We continually strive to provide the highest level of customer service, along with the most cost effective product lines. It opens the possibility of new design rules in the manufacture process. All ESD-Safe anti-fatigue mats are guaranteed to be safe for static-controlled environments. Typically green in color, the solder mask the thin polymer coating applied to the surface of PCBs to protect the copper from the environment. The solder mask is usually applied on both sides of the PCB i. This synthetic latex peelable solder mask is supplied in 30 cc syringes with dispensing needles. Solder mask) E. Mask colours: green, white, black, blue, red, yellow and violet (all: matt or glossy). 1 Moisture and Insulation Resistance - Solder Masks TM 2. Solder mask color: green, red, yellow, blue, white, and black. The solder is generally repelled by the oxides on the aluminum surface, but as you break through the oxide layer molten solder can form intermetallics with the aluminum. Discover the best red solder mask FR-4 CEM-1, CEM-3 8 layer single sided pcb board for mouse factory in China, Find Complete Details about red solder mask FR-4 CEM-1, CEM-3 8 layer single sided pcb board for mouse,single sided pcb design,Single Side PCB Board & Accessories Supplier or Factory - LP International Industries Co. There are several elements that go into creating an effective solder mask, and it’s a key feature of your printed circuit board’s makeup. The difference between these two solder mask pad definitions is in the proximity of the solder mask to the metal pad. Solder mask thickness changes based on the location on the circuit board. solder paste deposited for Ball Grid Array (BGA) and Quad Flat Package (QFP) of. Dimensions and tolerances of the solder mask clearance have to be specified to ensure that the solder pad is not. The solder mask should be applied to give a dried thickness of 15- 20 microns. Solder mask: Liquid Photoimageable Mask, peelable Mask, Dry Film Mask. Assembly and PCB Layout Guidelines for QFN Packages 2 Table 1 shows typical reliability data. 6mm Solder mask color: green, black, blue, white, yellow, purpl. • Min laminate and prepreg sheet thickness • Min starting external Cu foil thickness (and max if >102microns) • Min dielectric build-up thickness • Min laminate and prepreg (and max if >102microns) • Max internal Cu thickness ppg sheet thickness Mass • Min dielectric build-up thickness • Min starting Cu foil thickness (and max if. The solder mask is a Liquid UV Photo-imageable Ink which is usually green in color. Features include lead free, plug-in and tin lead. By using mask defined pads instead of conventional etch-expose technology, with the potential to further eliminate the etch process as a source of errors can only increase production yield further. Xilinx recommends using Non Solder Mask Defined (NSMD) copper BGA landing pads for optimum board design. Solder Mask Net Reball Stencil, Solder Mask Ink, UV Flashlight, Green Oil for CPU Repair BGA Chip Paint-Shedding With GeeBat 10PCS Double-Sided Copper Clad Laminate PCB Circuit Board 70x100mm 7x10cm FR4 1. The difference between these two solder mask pad definitions is in the proximity of the solder mask to the metal pad. Solder mask/ Cover lay Flexible material , PI No-flow Prepreg FR4 0,30 to 2,0 mm Solder mask Solder mask/ Cover lay Flexible material , PI Cover lay No-flow Prepreg FR4 0,30 to 2,0 mm Solder mask 1-layer flexible 1-to7-layers FR4 Total 8 layers 2-layers flexible 1-to6-layers FR4 Total 8 layers RigidRigid- ---flex on outermost layersflex on. A) Tagore Technology Inc. Base Material: FR-4: Board Thickness: 1. The mask material will comply with IPC-SM-840 Type B, Class II. The dielectric breakdown of our soldermask has been tested to 2800V / mil of thickness. The solder mask is an essential element in printed circuit board manufacturing. Thank you for the information. Figure 2 shows an example of the recommended dimensions. This equals 1. For 35um (1oz) and 53um (1,5 oz. Where no concuctors run between lands, a simple gang mask opening can be used as shown in Figure 3-24. It provides protection for a circuit but can also have an effect on final performance, especially at higher frequencies. Multilayer high precision PCB's with impedance control. Chemask ® may be used to protect pins, posts, contacts and edge connections during conformal coating processes. It is immediately followed by the component placement stage. It is an extra step and applied to the nearly finsihed board stackup, one for the top and one for the bottom if a 2 or more multilayer board. Unlike older epoxy inks that were applied using a screen that blocked off pads that required solder or other finishes, LPI inks are sensitive to UV light. 2mm Thickness Prototype PCB Board Black Solder Mask IPC-A-160 Standard. For special requirements not available on this page, please try the Advanced PCB service. Solder mask color: Green: Legend color: White: Thermal conductivity (W/m. 2mm(green) 0. 1 mm thickness. The solder mask is an essential element in printed circuit board manufacturing. China Colorful Solder Mask Printed Circuit Board, Find details about China Circuit Board, PCB from Colorful Solder Mask Printed Circuit Board - Shenzhen Hongmy Precision Circuit Co.