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Old 1st February 2010, 11:31 PM   #1
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Question Testing a Mosfet

Testing a Mosfet to see if it broken. What do you guys think of this method?

Testing a MosFet

I tested some that I pulled from "bad" builds and found some broken and some not for both N-Ch and P-ch FETs. Also tested unused FETs.

Used Bad
4- IRFP9140
1- IRFP140N

Used Good
3- IRFP140N

New Unused
4- IRFP048N (4 out of 4 good)

8- IRFP140A (8 out of 8 good)

4- IRF9610 (4 out of 4 BAD!) The resistance did not move upward.
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Old 2nd February 2010, 01:11 AM   #2
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The 9610 is a P channel. try reversing the multimeter leads.

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Old 2nd February 2010, 01:16 AM   #3
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Cool!

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Old 2nd February 2010, 08:21 PM   #4
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So is the IRFP9140. Better go back and check them again.
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