Hello Folks,
Need to contact wires to pads that are tiny. The wires are in the 0.001" or 25um category, the contact areas around 0.005" or 125um. Which kind of conductive epoxy would be suitable for this?
Too "blobby" and we'll get shorts, too runny and it'll be all over the place, barely wick the wire and not hold on too well. If the resulting resistance is in the tens of ohms that would be ok as long as the connection is reliable, at least for a few weeks of testing time. Pad metallization can be all sorts but mostly will be a very thin gold plating.
I've done similar jobs with black "Bare Paint" from RadioShack which Amazon also seems to sell but it is tough to sponge off droplets that are tiny enough.
Any suggestions?