New Equipment | ESD Control Supplies
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New Equipment | Industrial Automation
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Electronics Forum | Tue Aug 30 09:49:24 EDT 2011 | blnorman
Guess the better question is why are the resistors and FETs heating to the degree that they discolored the coating? If the coating is discolored, I'd be concerned with the possibility of cracking as dave mentioned. Cracks defeat the purpose of the
Electronics Forum | Mon Aug 29 16:21:20 EDT 2011 | rjlasko
Greetings...I have a customer that has an assembly that is conformal coated with Humiseal 1A33. This assembly has some components (resistors and FET's) that heated up during operation and has discolored the conformal coating around their location.
Industry News | 2019-04-09 20:33:44.0
ACL Staticide® introduces the 8696 Urethane Conformal Coating to its existing selection of rework and repair aerosols. This transparent coating provides insulative hard-shell protection for printed circuit boards against chemicals. The urethane-based resin protects against acidic and alkaline substances making it an ideal choice for many general applications such as HVAC, fire alarms, relays, generators, motors, transformers and battery-operated devices.
| http://etasmt.com/cc?ID=te_news_bulletin,24964&url=_print
. Process benefits of nitrogen include the use of lower melting point paste formulations (195°C) and improved solder flow and wetting angles. Nitrogen also may reduce discoloration caused by the higher
| https://www.smtfactory.com/The-advantages-and-functions-of-nitrogen-in-Lyra-Reflow-Oven-id49162477.html
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