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revax
on Aug 26, 2024
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Pi Pico 2 Extreme Teardown
Usually you use fuming nitric acid with or without sulfuric acid depending if you have copper bondings.
https://www.semitracks.com/reference-material/failure-and-yi...
axoltl
on Aug 26, 2024
[–]
In my experience just hot sulfuric acid works fairly well if you're looking to just get the die out. Just don't leave it too long or you won't have any bond pads left...
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