Quote:
Originally posted by snowwie
you can see that they leave the copper bare for the soldering (or whatever the hell it is that they do)
|
That doesn't look like copper to me.
The color looks to me like a plating I've heard called "chromate plating" which is used to put a non oxidizing coating on aluminum to facilitate electrical contact to the aluminum. (I don't have any reason to think this actually is chromate plating - just noting the similarity of the color.)
Normal tin/lead solder bonds easily to nickel. I don't have a good guess why the interior of the IHS has that yellow color.