N Channel MOSFET testing

Steve · Post by **Steve** » Fri Nov 13, 2020 2:55 pm

Hello,

Hey guys, I've recently got a new SSP6N60A mosfet to repair a power supply but the usual mosfet switch testing method doesn't seem to be working. I have tried the switch capacitance test, putting negative on the source, positive on the gate for a moment, then positive on drain. The mosfet does not seem to be opening as it should (MM in diode mode) I am thinking it is defective. What do you guys think?

Datasheet: https://www.exxoshost.co.uk/atari/last/psu/SSP6N60.pdf

Thanks,

https://www.youtube.com/user/exxosuk · Post by **exxos** » Fri Nov 13, 2020 3:04 pm

Test it properly...

: PRH0H.png (32.49 KiB) Viewed 414 times

EDIT:

I would suggest using a 12V source as not all mosfets will turn on below 5V or thereabouts. I've not checked.

Steve · Post by **Steve** » Fri Nov 13, 2020 3:29 pm

@exxos One more thing sorry, should a SSP6N60A be compatible with a SSP6N60? I can't seem to find a seperate datasheet to distinguish them.

cmorley · Post by **cmorley** » Fri Nov 13, 2020 3:34 pm

Steve wrote: ↑
Fri Nov 13, 2020 3:29 pm
@exxos One more thing sorry, should a SSP6N60A be compatible with a SSP6N60? I can't seem to find a seperate datasheet to distinguish them.

Note (4) at the bottom of page #2

https://www.youtube.com/user/exxosuk · Post by **exxos** » Fri Nov 13, 2020 3:35 pm

: Capture.PNG (21.31 KiB) Viewed 403 times

Steve · Post by **Steve** » Fri Nov 13, 2020 4:13 pm

@cmorley Oh cheers didn't see that. So this is an ultra low RDSon varient. I don't know if this is significant to the PSU operating requirements, it's a phihong psm-5341. Datasheet attached. Do you have any thoughts? cheers

N Channel MOSFET testing

N Channel MOSFET testing

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Re: N Channel MOSFET testing

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Re: N Channel MOSFET testing

Re: N Channel MOSFET testing