Testing Mosfets on DMM HFE setting

[Rixsta]

Hi

Can I test Mosfets on the HFE transistor test on my DMM, as it says either
CBCE or EBCE, which is for normal transistors.

 

[godfrey]

MOSFETs don't have an hFE, but you may be able to use it to see whether the MOSFET's working, or dead.

 

[Rixsta]

ahh, Thankyou yes I presume the voltages are low enough to not cause any problems with it so will give it a try

 

[JMFahey]

Hfe won't give you any meaningful answer.

And diode scale will show only gross shorts *or* the reverse DS diode .

 

[macboy]

You can use the diode test to test the MOSFET. Short G to S. The MOSFET should now be off. Test from D to S using the diode test (red=D black=S). It should show no conductivity. Now touch the red to G (keep black on S), which will charge up the gate and turn on the MOSFET. Move red back to D and it should show a low reading. The small capacitance of the gate is enough to keep it charged even when it is not connected.

This is only a basic good/bad test to test for shorts and conductivity, it can't give you the transconductance (analogous to the HFE of a bipolar).