I have a PCB with an RF module that is built on top of another PCB. If you look at the picture below you can see that it is almost identical to what I have soldered on top of the PCB.
The difference is on the top and bottom of the RF module board. I have some solder pads that are offset into the RF module PCB board, so they aren't exposed at the edge of the board.
I can't get direct heat to the solder pads.
What exactly do I need to do so I can desolder the offset pads?
Are there any kind of special tools I need?
Best Answer
Chipquik. It's super low temperature solder (melts at 63C). Basically you coat all the pads with it to make a big blob and then you can lift the part off while it's molten.