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Dymax Light-Curable Conformal Coatings Selector Guide PDF

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Light-Curable Conformal Coatngs Selector Guide OUR TECHNOLOGY. ® YOUR ADVANTAGE. At Dymax, we combine our product ofering with our expert knowledge of light-cure technology. Where others only supply products, we are commited to developing a true collaboratve partnership, bringing our unsurpassed expertse in light-cure technology and total process knowledge to our customers’ specifc applicaton challenges. Because we understand the process as a whole, we can ofer our customers a soluton where chemistry and equipment work seamlessly together with maximum efciency. Our applicaton engineering team works side-by-side with our customers, providing assistance with product and process design, equipment selecton and integraton, testng, evaluaton, and pre-producton trials throughout the life of the assembly process. Our laboratory is fully equipped to deliver mechanical or electrical testng, as well as specialty testng such as fowers of sulfur, salt spray, or thermal shock to ASTM standards. The lab also has a variety of curing equipment and manual Light-Curable Materials. and automated dispensing systems for evaluaton. Dispensing Systems. Our assembly solutons and expertse give manufacturers the knowledge and tools to increase productvity, lower costs, increase Light-Curing Equipment. safety, and achieve a more efcient manufacturing process. That’s a compettve advantage they can’t get anywhere else. Technical Expertse. 1 | Light-Curable Conformal Coatngs Selector Guide Dymax Light-Curable Conformal Coatngs Be t e rB Ceitrceur iCt iBrcouairtd B o ard Prot e cPtrootne cwtiothn Hwiigth eHr igher ProcesPsr oTchersosu Tghrpouutghput Dymax light-curable conformal coatngs have been used to protect Superior Protecton printed circuit boards (PCBs) for over thirty years in many high-reliability applicatons, including military, aerospace, consumer electronics, medical, • IPC-CC-830, Mil-I-46058C, and UL listed automotve, appliance, and telecom applicatons. Our conformal coatngs • Excellent environmental resistance improve the circuit reliability of PCBs in harsh environments, protectng the • Excellent electrical propertes boards from humidity, dust, fungus, and other contaminants that can cause • Tenacious adhesion to fex circuits (FPCs) either current leakage or corrosion. • Low stress under thermal cycling • Non-slumping viscosites Our conformal coatngs are designed to help streamline the assembly • Excellent abrasion resistance process, curing tack free in seconds upon exposure to UV/Visible light • Black coatngs help hide proprietary circuitry to help streamline manufacturing assembly processes. Manufacturers • Excellent chemical resistance can apply, cure, and ship immediately, eliminatng tme-consuming steps associated with traditonal thermal-cure and room temperature-cure conformal coatngs. Each conformal coatng is one part (no mixing required) Superior Processing for easy dispensing and is electrically insulatng so it can be applied over • Easier automaton the entre PCB surface or in select areas to provide protecton from service • Full cure in seconds environments. • No racking or long ovens Our solvent-free conformal coatngs contain very low VOCs, eliminatng the • No risk of silicone migraton need for solvent handling, while enhancing worker safety and minimizing • Solvent free environmental impact. • Thick coatngs in a single applicaton • Repairable • One part - no mixing or viscosity problems Light-Curable Conformal Coatngs Selector Guide | 2 Selectng a Conformal Coatng When selectng a light-curable conformal coatng, consider these questons when making your selecton: How is the coatng being applied and cured? What cured propertes/specifcatons are required? Typically, the best way to apply Dymax conformal coatngs is Dymax conformal coatngs are excellent insulators. In practce, by selectve spray applicaton. This method ensures that areas propertes afectng the degree of protecton include coatng which must be protected are coated at the desired thickness and thickness (thicker is typically beter), moisture absorpton (less is areas which should not be coated remain uncoated. In additon, beter), and resistance to other environmental stresses. Flexible selectve spray applicaton can be used to avoid depositng the grades are designed to enhance thermal cycling performance. conformal coatng underneath components where the material Hard, more rigid grades are preferred to enhance chemical is shadowed from light. resistance in harsh environments. Required specifcatons are also important consideratons. Dymax conformal coatngs are Dymax conformal coatngs cure in seconds under high-intensity used in a multtude of military and automotve applicatons. UVA and blue visible light. With proper coatng applicaton, UV Dymax carries an array of MIL-I-46058C listed, IPC-CC-830-B cure is a very simple processing step. approved and UL recognized coatngs. How well does the coatng adhere to the PCB and Do you have any special requirements? component materials? Other than the coatng’s cured propertes, you’ll want to note To provide efectve protecton to PCB components and any special requirements your process may need. Dymax ofers surfaces, conformal coatngs must wet well upon applicaton and many conformal coatngs formulated with unique features that adhere well afer cure. Optmal results are obtained with clean improve the quality inspecton process or that add extra security boards. Adhesion testng is performed on materials commonly to PC boards. Conformal coatngs are also available with a used in the industries for each of our conformal coatngs. This secondary cure opton such as heat or moisture for applicatons informaton is reported on our product data sheets. that may have shadowed areas that are difcult to reach with light. ASSISTANCE WITH SELECTION AND TESTING Selectng the correct coatng and equipment for your applicaton is important to the overall success of your process. Our technical experts are available to assist with product and process design, equipment selecton and integraton, testng, evaluaton, and pre-producton trials throughout the life of the assembly process. Our laboratory is fully equipped to perform testng under a variety of environmental conditons including: • Salt Spray • Shear strength • Flowers of Sulfur • Thermal shock • Humidity aging per ASTM standards • And more Please contact our applicaton engineering department for more informaton. 3 | Light-Curable Conformal Coatngs Selector Guide Specialty Coatngs & Technologies SHADOW CURE - SECONDARY HEAT & ULTRA-RED® FLUORESCING TECHNOLOGY MOISTURE CURE FOR HARD TO REACH FOR EASIER COVERAGE INSPECTION AREAS Dymax Mult-Cure® coatngs are formulated to ensure complete Ultra-Red® fuorescing technology enhances bond-line inspecton processes and product authentcaton. Adhesives cure in applicatons where shadowed areas on high-density formulated with Ultra-Red® remain clear untl exposed to low- circuit boards are a concern. They are designed with either intensity UV light at which point they fuoresce bright red. This secondary moisture or thermal cure mechanisms. Our moisture is partcularly efectve while bonding plastcs that naturally cure formulas ensure shadowed areas cure over tme with fuoresce blue, such as PVC and PET. Ultra-Red® technology moisture, eliminatng the need for a second process step and also produces a unique spectral signature that can be used by concerns of component life degradaton due to temperature manufacturers for product authentcaton. exposure. Mult-Cure® Coatngs Ultra-Red® Technology MULTI-CURE® 9451: BLACK CONFORMAL MULTI-CURE® 9452-FC: LOW VISCOSITY, COATING FOR PROTECTING SENSITIVE 100% SOLIDS, LED-CURABLE CONFORMAL INFORMATION COATING Dymax 9451 black conformal coatng was developed Mult-Cure® 9452-FC conformal coatng is 100% solids and has specifcally to protect sensitve informaton on the PCB. Like a a viscosity of only 20 cP, making it the ideal choice for flm/ typical conformal coatng, it improves circuit reliability in harsh fow coatng or similar dispensing methods. It cures with UV/ conditons, but thanks to its mate black color, it has the added visible light but also has the ability to be cured with heat for beneft of being able to conceal markings, labels, sensitve applicatons where shadowed areas exist. The coatng is LED informaton, and other identfcaton on the circuit board. This optmized, curing in just seconds for immediate processing. coatng has excellent coverage and can be applied and cured up 9482-FC also fuoresces blue under black light, allowing easier to 5 mils thick in one pass. It can also be dispensed in multple in-line inspecton of coatng coverage. passes if a thicker coatng is required. Black Conformal Coatng Low Viscosity Conformal Coatng Light-Curable Conformal Coatngs Selector Guide | 4 Available Conformal Coatngs Product Number Descripton Approvals MIL-I-46058C 9-20557 n n Isocyanate free; medium viscosity for wetng components; 2,300 D60 37.9 15.8 150 >1,500 IPC-CC-830-B low modulus for enhanced thermal cycling performance [5,500] [2,300] UL Flammability UL 746 9-20557-LV n n Isocyanate free; low viscosity for thin coatngs; low 850 D70 310 21.7 100 >1,500 MIL-I-46058C modulus for enhanced thermal cycling performance [45,000] [3,150] IPC-CC-830-B Thixotropic, high-viscosity coatng; bonds well to FPCs; 9-20558- 2.3 6.2 n n fexible; can be used as a conformal coatng as well as an 20,000 D50 160 1,100 UL Flammability REV-A [340] [900] encapsulant Isocyanate free; low viscosity for thin coatngs; rigid for MIL-I-46058C 984-LVUF n n n high chemical and abrasion resistance; optmized for LED 160 D85 724 55.8 4 1,800 IPC-CC-830-B [105,100] [8,100] UL 746C curing UL 94V-0 Flammability Black color is excellent for hiding components and board 717 42.7 9451 n n features; designed for thin coatngs; optmized for single 6,000 - 4.4 1,200 UL 94V-0 Flammability [104,000] [6,200] pass coatngs up to 0.005” Extremely low viscosity for flm/fow coatng applicatons; 1,137 34 9452-FC n n n very good thermal shock resistance; blue fuorescing; 100% 20 D60 6 1,000 UL 94V-0 Flammability [165,000] [4,950] solids; optmized for LED curing Low viscosity for thin coatngs; low surface energy for MIL-I-46058C 9481-E n n difcult-to-wet components and assembly materials; high 125 D75 150 11 60 >1,500 IPC-CC-830-B chemical and abrasion resistance; excellent resistance to [21,800] [1,600] UL 94V-0 Flammability corrosion from sulfur UL 746E Thermal shock and chemical resistance; superior re- MIL-I-46058C 9482 n n workability; blue fuorescing; Excellent resistance to 1,100 D70 275 15.8 26 1,100 IPC-CC-830-B approved [40,000] [2,300] UL 94V-0 Flammability corrosion from sulfur UL 746E Excellent thermal shock resistance; corrosion resistant; 276 16.2 9483 n n great temperature/humidity performance; blue fuorescing; 690 A55 22 1,500 [40,000] [2,350] recommended for automotve applicatons 5 | Light-Curable Conformal Coatngs Selector Guide UV/ Visible Light LED Heat Moisture Viscosity cP Durometer Hardness Modulus of Elastcity, MPa (psi) Tensile at Break, MPa [psi] Elongaton at Break, % Dielectric Withstand Voltage, V/mil Industries Served AUTOMOTIVE Typical applicatons include speedometer circuitry, engine control modules and sensors, door and window controls, airbag sensors, audio circuitry, and more. Learn more in our Product guide, “Light-Curable Materials for Automotve Number Descripton Approvals Electronics”. MIL-I-46058C 9-20557 n n Isocyanate free; medium viscosity for wetng components; 2,300 D60 37.9 15.8 150 >1,500 IPC-CC-830-B low modulus for enhanced thermal cycling performance [5,500] [2,300] UL Flammability UL 746 INSTRUMENTATION 9-20557-LV n n Isocyanate free; low viscosity for thin coatngs; low 850 D70 310 21.7 100 >1,500 MIL-I-46058C Typical applicatons include sensor circuits, modulus for enhanced thermal cycling performance [45,000] [3,150] IPC-CC-830-B display connectors, mother boards, and more. Thixotropic, high-viscosity coatng; bonds well to FPCs; 9-20558- 2.3 6.2 n n fexible; can be used as a conformal coatng as well as an 20,000 D50 160 1,100 UL Flammability REV-A [340] [900] encapsulant Isocyanate free; low viscosity for thin coatngs; rigid for MIL-I-46058C 984-LVUF n n n high chemical and abrasion resistance; optmized for LED 160 D85 724 55.8 4 1,800 IPC-CC-830-B SMART CONNECTED DEVICES [105,100] [8,100] UL 746C curing UL 94V-0 Flammability Typical applicatons include PCBs for camera modules, tablets, cell phones, computers, Black color is excellent for hiding components and board 9451 n n features; designed for thin coatngs; optmized for single 6,000 - 717 42.7 4.4 1,200 UL 94V-0 Flammability wearables, and more. Learn more in our guide, [104,000] [6,200] pass coatngs up to 0.005” “Light-Curable Materials for Smart-Connect Device Assembly”. Extremely low viscosity for flm/fow coatng applicatons; 1,137 34 9452-FC n n n very good thermal shock resistance; blue fuorescing; 100% 20 D60 6 1,000 UL 94V-0 Flammability [165,000] [4,950] solids; optmized for LED curing APPLIANCE Low viscosity for thin coatngs; low surface energy for MIL-I-46058C Typical applicatons include control boards, 9481-E n n cdhifemcuiclta-lt oa-nwde atb croasmiopno nreesniststa anncde ;a esxsecemllbelnyt m reastiesrtiaanlsc;e h tigoh 125 D75 [21,580 0 ] [1,16100] 60 >1,500 IUPLC 9-C4CV-803 F0la-Bm mability sensors, and modules used in handheld corrosion from sulfur UL 746E power tools, appliance sub-components, small consumer appliances, and major home Thermal shock and chemical resistance; superior re- MIL-I-46058C appliances. Learn more in the “Dymax Appliance 9482 n n workability; blue fuorescing; Excellent resistance to 1,100 D70 275 15.8 26 1,100 IPC-CC-830-B approved Applicaton Guide”. [40,000] [2,300] UL 94V-0 Flammability corrosion from sulfur UL 746E Excelent thermal shock resistance; corrosion resistant; INDUSTRIAL 276 16.2 9483 n n great temperature/humidity performance; blue fuorescing; 690 A55 22 1,500 recommended for automotve applicatons [40,000] [2,350] Typical applicatons include circuit boards used in electrical sockets, power supplies, and switches. Light-Curable Conformal Coatngs Selector Guide | 6 UV/ Visible Light LED Heat Moisture Viscosity cP Durometer Hardness Modulus of Elastcity, MPa (psi) Tensile at Break, MPa [psi] Elongaton at Break, % Dielectric Withstand Voltage, V/mil Coatng Performance Studies Testng 9-20557 984-LVUF 9451 9452-FC 9481-E 9482 9483 CORROSION RESISTANCE - FLOWERS OF SULFUR (ASTM B809) Poor Good ─ Excellent Excellent Excellent Excellent 50oC, 90% RH, 96 hours exposure to sublimed sulfur. Test boards were then inspected for tarnish and corrosion on the copper fnish of the test board. Before - Uncoated PCB Afer - Uncoated Afer - Coated w/Dymax CORROSION RESISTANCE - SALT FOG (ASTM B117) 35oC, 5% salt soluton for 96 hours. Test boards were then Good Good Excellent Excellent Excellent Excellent Excellent inspected for corrosion on the copper fnish of the test board. No disruptve charge by fash over, spark over, or break-down in dielectric voltage transient test. Before - Uncoated PCB Afer - Uncoated Afer - Coated w/Dymax HIGH TEMP./HIGH HUMIDITY 85oC/85% Humidity for 500 hours. Inspect for sofening, Pass Pass* TBD Pass Pass Pass Pass chalking, blistering, cracking, tackiness, loss of adhesion, reversion or liquefacton. No disruptve charge by fash over, spark over or break-down in dielectric voltage transient test. Before - Uncoated PCB Afer - Uncoated Afer - Coated w/Dymax THERMAL SHOCK RESISTANCE*** -55oC to 125°C, 30 minute dwell tme, 300 cycles. Sn-Pb Pass Pass TBD Pass Pass Pass Pass components assembled PCB003 test boards with AgIm fnish. Test boards were then inspected for any cracking or delaminaton. Afer - PC003 Test Boards Afer - Flat Boards FLEXIBILITY (IPC-TM-650 2.4.5.1) Pass Pass Pass Pass Pass Pass Pass 180° bend test was performed. The test boards were then inspected for cracking or delaminaton. FLAMMABILITY UL V-0 UL V-1 UL V-0 UL V-0 UL V-0** UL V-0 UL V-0 Pending UL94 Vertcal burn test * Tested to IPC-TM-650 2.6.11.1 ** Meets UL V-0. Testing completed internally at Dymax *** 9452-FC tested on fat boards. 9482 and 9-20557 tested on PCB003 test boards. 9481-E & 984-LVUF tested to IPC-TM-650 2.6.7.1 testing. 7 | Light-Curable Conformal Coatngs Selector Guide Testng 9-20557 984-LVUF 9451 9452-FC 9481-E 9482 9483 CORROSION RESISTANCE - FLOWERS OF SULFUR (ASTM B809) Flowers of Sulfur Testng Chamber Poor Good ─ Excellent Excellent Excellent Excellent 50oC, 90% RH, 96 hours exposure to sublimed sulfur. Test boards were then inspected for tarnish and corrosion on the copper fnish of the test board. CORROSION RESISTANCE - SALT FOG (ASTM B117) o 35 C, 5% salt soluton for 96 hours. Test boards were then Good Good Excellent Excellent Excellent Excellent Excellent inspected for corrosion on the copper fnish of the test board. No disruptve charge by fash over, spark over, or break-down in dielectric voltage transient test. Salt Fog Chamber HIGH TEMP./HIGH HUMIDITY 85oC/85% Humidity for 500 hours. Inspect for sofening, Pass Pass* TBD Pass Pass Pass Pass chalking, blistering, cracking, tackiness, loss of adhesion, reversion or liquefacton. No disruptve charge by fash over, spark over or break-down in dielectric voltage transient test. THERMAL SHOCK RESISTANCE*** -55oC to 125°C, 30 minute dwell tme, 300 cycles. Sn-Pb Pass Pass TBD Pass Pass Pass Pass Flammability Test components assembled PCB003 test boards with AgIm fnish. Test boards were then inspected for any cracking or delaminaton. FLEXIBILITY (IPC-TM-650 2.4.5.1) Pass Pass Pass Pass Pass Pass Pass 180° bend test was performed. The test boards were then inspected for cracking or delaminaton. FLAMMABILITY UL V-0 UL V-1 UL V-0 UL V-0 UL V-0** UL V-0 UL V-0 Flexibility Testng Pending UL94 Vertcal burn test * Tested to IPC-TM-650 2.6.11.1 ** Meets UL V-0. Testing completed internally at Dymax *** 9452-FC tested on fat boards. 9482 and 9-20557 tested on PCB003 test boards. 9481-E & 984-LVUF tested to IPC-TM-650 2.6.7.1 testing. Light-Curable Conformal Coatngs Selector Guide | 8 CHEMICAL RESISTANCE - AUTOMOTIVE FLUIDS A selecton of Dymax conformal coatngs were tested for their chemical resistance against a variety of fuids commonly found in the automotve industry. The conformal coatngs were dispensed and then cured for 20 seconds using a Dymax 5000-EC food lamp at an intensity of 2 200 mW/cm . The samples were then immersed in the fuids for 72 hours, afer which they were removed and wiped clean. The samples were then lef at room temperature for 1 week. The inital weights of the sample coatngs were recorded, as well as the weights afer the 72 hour soak and afer the 1 week. 9-20557 984-LVUF 9451 9452-FC 9481-E 9482 Change from Inital Weight Change from Inital Weight Change from Inital Weight Change from Inital Weight Change from Inital Weight Change from Inital Weight Inital Weight Inital Weight Inital Weight Inital Weight Inital Weight Inital Weight (grams) (grams) (grams) (grams) (grams) (grams) 72 H 1 Week 72 H 1 Week 72 H 1 Week 72 H 1 Week 72 H 1 Week 72 H 1 Week Motor Oil 0.71 0.24% 0.06% 0.70 0.04% -0.02% 0.06 0.32% 0.31% 0.69 0.27% 0.38% 0.71 0.05% 0.06% 0.72 0.02% 0.02% Brake Fluid 0.70 64.59% 60.29% 0.70 13.40% 10.53% 0.06 57.86% 34.82% 0.68 20.64% 18.55% 0.72 1.00% 0.45% 0.71 5.15% 3.74% Transmission Fluid 0.67 0.88% 0.49% 0.70 -0.07% -0.07% 0.06 0.69% 0.42% 0.67 0.31% 0.44% 0.70 -0.04% 0.01% 0.71 -0.05% 0.01% Power Steering Fluid 0.68 0.13% -0.13% 0.70 0.09% -0.01% 0.06 0.45% -0.19% 0.68 0.22% 0.34% 0.70 0.13% 0.04% 0.72 -0.01% -0.07% Water 5% NaCl 0.69 3.02% -0.41% 0.70 0.57% 0.00% 0.06 2.57% 0.22% 0.67 4.49% 1.12% 0.70 0.66% 0.01% 0.72 0.73% -0.03% IPA 99% 0.72 64.45% 2.49% 0.70 26.73% 10.88% 0.07 20.95% 2.17% 0.67 20.26% 5.38% 0.70 7.51% 5.08% 0.71 15.62% 5.35% Diesel Fuel 0.69 9.02% 4.28% 0.69 0.08% 0.02% 0.06 -0.25 0.40% 2.06 0.20% 0.31% 0.71 0.07% -0.03% 0.72 0.49% 0.07% 9 | Light-Curable Conformal Coatngs Selector Guide

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