On Fri, 20 Jul 2012 14:38:17 -0500, Jon Elson
wrote:
Jim designs integrated circuits. Do you think you can repair them?
***Once or twice I've chipped back the encapsulation to repair a snapped
off pin.
You patched the package, not the IC itself.
Some time ago, to aid in diagnosing a prototype chip, we sent it out to have
some wires swapped in the chip. Focused Ion Beam, cost a couple thousand
bucks to have one chip rewired. The chip worked after that, so we knew
what needed to be fixed in the layout.
Jon
Yep. It's called Ion Beam Milling... add and remove traces. Pretty
high resistivity, but usually works for patching and proving CMOS
fixes. Then you fix the mask set.
...Jim Thompson
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