Scott D. Szymanski, Global Marketing Manager, Nordson MARCH
Edward Zamborsky, Regional Sales Manager, OK International Inc.
James Mahoney, Applications Project Manager, Quick Turn Flex Circuits LLC
Dr. Brian Toleno, Application Engineering, Henkel Electronics
Jade Bridges, R&D Manager, Electrolube Ltd
Wayne Wagner, President, Krayden Inc.
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With regards to moisture resistance, yes this one of the benefits of using conformal coating. Beofre deciding on a type of conformal coating it needs to be determined what type of moisture resistance is needed. Depending on moisture resistance you can use Epoxy, Humi Seal 1B 31 Parylene.
When dipping or spraying conformal coatings you will find that they are not pin hole free which allows moisture to penetrate and also you have to apply the materials thicker because when curing they will shrink and you will also get over spraying. If you use Parylene, it is a vacuum deposited, pin hole free, thin coating that has exceptional moisture resistance. At the end of the day the choice of what conformal coating to use depends on the moisture resistance required and the costs needed.
Bill Yager, Para Tech Coating, Inc
Conformal coatings do protect circuit boards from humidity very well. The choice of materials and application methods will depend on your specific environmental requirement as well as what level of re-work you may want to have available. We currently have several customers that require an acrylic coating which provides excellent protection from moisture and is very easy to remove if any repairs are required, the application method is atomized spray using an HVLP (high volume low pressure) paint gun.
Coating thickness targeted at 3mils and is determined by methods described in IPC-CC-830 (thickness range is 1-5mils). One thing to keep in mind in wet environments is that interconnects must be chosen carefully as they will be the weak point on a properly coated assembly.
Sunstone Circuits, has released the newest version of their design software, PCB123. Bottom line, the design process just got easier. Sunstone Circuits
Once you have made the decision to package your electronics with rigid flex, it makes sense to pick a production partner who can build it right. Printed Circuits, Inc.
Once you have made the decision to package your electronics with rigid flex, it makes sense to pick a production partner who can build it right. Printed Circuits, Inc.
Components encapsulated in plastic or organic compounds are susceptible to moisture damage. So are PCBs, all can cause early field failures. Control MSDs per IPC J-Std-033b.1 and 1601. Super Dry®
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The FlexSolder W510 Selective Soldering System is a low cost, lead-free compatible, superior-quality system, offering high flexibility. Juki Automation Systems
IPC — Association Connecting Electronics Industries 3000 Lakeside Drive, 309 S, Bannockburn, IL 60015 Phone: 978-478-5112 | Fax: 843-682-4255
Sandy Gentry, Editor | Kim Sterling, Publisher
Use the form below to submit a comment.
When dipping or spraying conformal coatings you will find that they are not pin hole free which allows moisture to penetrate and also you have to apply the materials thicker because when curing they will shrink and you will also get over spraying. If you use Parylene, it is a vacuum deposited, pin hole free, thin coating that has exceptional moisture resistance. At the end of the day the choice of what conformal coating to use depends on the moisture resistance required and the costs needed.
Bill Yager, Para Tech Coating, Inc
Coating thickness targeted at 3mils and is determined by methods described in IPC-CC-830 (thickness range is 1-5mils). One thing to keep in mind in wet environments is that interconnects must be chosen carefully as they will be the weak point on a properly coated assembly.
Bert Furr, Benchmark Electronics, USA