my random polls are getting more and more esoteric and i'm surprised that someone voted on this at all, let alone for that one
-F
@Felthry We have no idea what these are but "immersion silver" sounds cool. :P
about what those are
@IceWolf they're types of surface finish for PCBs
HASL is hot-air solder leveling, where you just dip the board in molten solder and blow hot air over it to get off any blobs and level the surface
ENIG is electroless nickel immersion gold, where you plate it with nickel (in a non-electroplating method, hence "electroless") and then dip it in a solution that deposits a very thin (typically 1 μ" and yes that unit is cursed) layer of gold on top of that
OSP is organic solderability preservatives, just a coating of organic material that stops the otherwise-bare copper from oxidizing
ENEPIG is electroless nickel electroless palladium immersion gold, just ENIG with some palladium between the nickel and gold
and immersion silver is also called ENIS and i bet you can guess what that is by now
-F
