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Archive for August 21st, 2013

Semiconductors From eBay: A Tinge Of Doubt Crosses My Mind

So I picked up a lot of 20 p-channel MOSFETs from the usual eBay supplier in China, which arrived in good order. As is often the case, the SOIC chips are in snippets of tape-and-reel carrier, but this tape looked decidedly odd:

eBay FDS6675 Tape Cover Contamination

eBay FDS6675 Tape Cover Contamination

Peeling back the tape shows that the crud is just on (or perhaps inside) the tape, not on the ICs or inside the carrier pockets:

img_3456 - eBay FDS6675 Tape Cover Contamination - interior

img_3456 – eBay FDS6675 Tape Cover Contamination – interior

Some of those specks are dirt, some seem to be bubbles, other are just, well, I don’t know what they might be. Maybe they were having a bad day in the tape factory?

One might reasonably conclude the chips aren’t in their original carrier…

I must gimmick up a quick test to verify that the chips behave like p-channel MOSFETs, instead of, oh, solid plastic; that Fairchild logo looks a bit grotty, doesn’t it?

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