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Component Learning

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Electronic components are basic electronic element or electronic parts usually packaged in a discrete form with two or more connecting leads or metallic pads. Electronic Components are intended to be connected together, usually by soldering to a printed circuit board (PCB), to create an electronic circuit with a particular function.

Community > Groups > Component Learning > How to determinate or measure K1058/J162 FAKES?
How to determinate or measure K1058/J162 FAKES?
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Stephen Gullotto

Hello everybody.
I have 8 pairs of K1058/J162 bought in supposed trustable shop and supposed paired too.
I bought them long time ago, more than one year.
Now I opened the drawer to use those MOSFETS in a project and what I see is no signal of pairing (no sticks or any sign visible) and lots of doubts if they are genuine or not.
The marks are not engraved and theres no brand (Hitachi, toshiba, renesas or whatever)
This is a picture. The scratches in the K1058 has been done by myself checking they were not engraved.
What do you think about?
Do you know any testing circuit to match them?
Thank you
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