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Decapping integrated circuits
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Topic: Decapping integrated circuits (Read 931 times)
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Jane
Frequent Contributor
Posts: 400
Decapping integrated circuits
«
on:
September 20, 2018, 06:21:58 pm »
I would like to replace an integrated circuit on a mainboard. A problem is that a manufacturer removed any text on the circuit. If I decap the circuit (in a nitric acid) I can see the inner circuits. Is it common a manufacturer put a model number on the wafer( inside of the circuit) or not?
Anyone knows?
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SeanB
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Re: Decapping integrated circuits
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Reply #1 on:
September 20, 2018, 06:48:31 pm »
Pretty common to have a number there along with manufacturer logo, though for some that is not too easy to transfer to a part number, but does give a good idea as to function.
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ataradov
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Re: Decapping integrated circuits
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Reply #2 on:
September 20, 2018, 06:52:13 pm »
It is actually very rare to see the actual part number on more or less complex parts. Usually you see a mask number, since the part number may change at any time on a whim of a marketing department.
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Alex
amyk
Super Contributor
Posts: 8409
Re: Decapping integrated circuits
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Reply #3 on:
September 21, 2018, 12:18:09 am »
Probably easier to identify from function, package, and pinout.
You can add more information and people here may give it a go.
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tpowell1830
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Peacefully retired from industry, active in life
Re: Decapping integrated circuits
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Reply #4 on:
September 21, 2018, 12:20:39 pm »
There was a thread here some time back of someone acid etching/decapping ICs. If you could find that thread originator, could possibly shine some light on your question.
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