How should I handle wet PCBs?

A batch of PCB got wet in warehouse due to roof linking. Too terrible to shoulder the lost. How can I do to rescue these wet PCBs? Or to minimize the damage?

PCB Assembly, PCB Testing
November 15, 2023

The best solution is to dry it by wind and then sunshine.
Clean PCBs with high-purity alcohol if available. High-purity alcohol can dilute water and promote ventilation.
Test them before using in case of any residual water.

Anyway, the stability of the PCB is impossible to recover as before, but they can work. After all, they have been damped. If they pass a wet test before selling, things will be better.

#PCB Assembly #PCB Testing

Oliver Smith

Oliver is an experienced electronics engineer skilled in PCB design, analog circuits, embedded systems, and prototyping. His deep knowledge spans schematic capture, firmware coding, simulation, layout, testing, and troubleshooting. Oliver excels at taking projects from concept to mass production using his electrical design talents and mechanical aptitude.

Oliver Smith

What Others Are Asking

Can through-hole leads be cut filed level with the PCB back while maintaining good connectivity?

I’m looking at using a through hole mounted CR2016 battery holder on a circuit but the leads need to be level with the back of the PCB due to size constraints.

Oliver Smith December 6, 2023

Is aluminium foil a good substitute for kapon tape when soldering?

I want to desolder a tiny surface mount button from the motherboard of a phone. There are a lot of similarly tiny components surrounding it that I do not want to damage with heat from the soldering iron. Can I use aluminium foil in lieu of kapton tape to protect these components?

Oliver Smith December 5, 2023

Do I have to protect PCB from radio frequency reflection?

I am designing a system on megahertz frequency bands (~ 400-1000MHz.) This device is connected to a variable antenna which does not necessarily stay in match with the circuit so there will be some reflection of the power back to the circuit. The feeding power would not be more than 0dBm at maximum. Do I ever need to take care of the reflections at all?

Oliver Smith December 5, 2023