Decapsulation is the process of removing a die from or exposing a die in a package.
Depending on the carrier type, different techniques need to be used.
Epoxy
In order to protect the fragile die, epoxy is mechanically strong and very chemical resistant. Strong chemicals, mechanical abrasion, or heat treatments can be used to remove epoxy. This is the most common packaging and possibly also the hardest.
Ceramic
Can
Some packages are fully metallic. Usually these are transistors, but military ICs also came (still do?) in these as well.
Plastic
Typically used for smart cards.
Misc
- Covers misc decap ranging from crude mechanical to high end machines
- Peter Laackmann, Marcus Janke
- Novel Deprocessing Technique for Failure Analysis of Flip-Chip Integrated Circuit Packages
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