The photo of the IC at the bottom of the 2nd page:
The chip certainly has some decoupling caps on board, but the solder is also golden. Is it a special solder (namely what?) or do they apply galvanic post-processing? The caps are golden at the very top too...
Best regards, Piotr
Probably Au 80% Sn 20% eutectic.
John
I believe you are right, I didn't know about this mixture. Thanks!
Best regards, Piotr
That's a lead frame, and is meant to be "soldered" (really - brazed) at a much higher temperature than soldering. Also, could be the light was tinted golden for effect, or just what they had in the clean room.
Jon
Hmm, I don't seem to have any of that currently in stock for some reason.
NT
The "solder" you're seeing is a eutectic chosen to have the same thermal expansion characteristics as the chip it's supporting. ...Jim Thompson
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