is this mosfet faulty ? mdf4n65b

Thread Starter

disturbed123

Joined Jun 11, 2020
13
i charge it with 9v battery and am hearing sound from short between D and S and S and D.

When put short between G and S with fingers i see 536 and after that 1.

What estimate should i expect in second measurements ?

thanks.
 

KMoffett

Joined Dec 19, 2007
2,883
Set up the attached circuit. Measure the DC voltage between the Drain and Source. Touch the Gate to the + end of the 9V battery.
If the MOSFET is OK ,the DC voltage reading should go from 9V to near 0V. Disconnect the gate. The voltage reading should go back to 9V.MOSFET Test.png
 
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