Repairing IC pins
pkoning at equallogic.com
Fri Jul 22 15:32:03 CDT 2005
>>>>> "Paul" == Paul Koning <pkoning at equallogic.com> writes:
>>>>> "Dwight" == Dwight K Elvey <dwight.elvey at amd.com> writes:
>>> From: "Paul Koning" <pkoning at equallogic.com>
>>>>>>>> "Dwight" == Dwight K Elvey <dwight.elvey at amd.com> writes:
Dwight> ... I have a number of RAM IC that are gradually failing
Dwight> because they have the iron cored pins. I guess these were
Dwight> cheaper ...
>>> Probably not. Chances are the pin is actually made of Kovar or
Dwight> Hi Paul No, these are made with iron. It clings solidly to a
Dwight> magnet. The cores are definitely form one of the iron oxides.
Dwight> These are on plastic and not ceramic packages. Not many
Dwight> materials cling that well to a magnet, other than iron that I
Dwight> know of.
Paul> Actually, alloys of iron, or nickel, or cobalt all cling to
Paul> magnets, and Kovar is definitely one of those.
Come to think of it, there are two classic alloys for metal/glass
(pyrex type) or metal/ceramic seals: Kovar and Fernico. Pick apart
that second one into syllables and you can see it has three reasons to
stick to magnets... :-)
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