Printed Circuit Board Assembly & PCB Design SMT Electronics Assembly Manufacturing Forum

Printed Circuit Board Assembly & PCB Design Forum

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High temp PCB coating needed

Views: 1580

#81244

High temp PCB coating needed | 16 October, 2018

Hello experts,

I have an assembly that goes through pretty tough sterilization on regular basis. Currently I am using a two component material in potting process. I was wondering if you can help me with material that can handle high temp and humidity to protect my PCB?

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#81247

High temp PCB coating needed | 17 October, 2018

SCC3 has an operating temperature of 200C, as long as it is heat cured at 100C. https://www.electrolube.com/pdf/tds/044/DCA.pdf

It's also a silicone so needs to be coated & cured away from anything you value.

Otherwise there are plenty of PU's and acrylics that will take 125C - Humiseal 1B31 & 1B73 for example.

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#81345

High temp PCB coating needed | 1 November, 2018

Thanks Rob,

It looks like my customer wouldn't let me to change the material. However, this potting material still sticks to the non sticking fixture that I have. Can anyone give me a non sticking material that I can make these fixtures out of?

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#81494

High temp PCB coating needed | 27 November, 2018

I don't think could suggest anything different than what Rob has suggested. It's really nice to have such information. Thanks, Rob for sharing it.

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#81505

High temp PCB coating needed | 28 November, 2018

Even, proportional–integral–derivative (PID) algorithm works well in this case.

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#81596

High temp PCB coating needed | 12 December, 2018

@BettyHunt, thanks for sharing.

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Non-heated dispensing system

FPC* - Fluid Pressure Control - Dispensing Pump