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N Channel MOSFET testing

Tool suggestions, soldering tips, general useful electronics knowhow.
Steve
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Joined: 15 Sep 2017 11:49

N Channel MOSFET testing

Post by Steve »

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.exxosforum.co.uk/atari/last/psu/SSP6N60.pdf


Thanks,
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exxos
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Re: N Channel MOSFET testing

Post by exxos »

Test it properly...

PRH0H.png

EDIT:

I would suggest using a 12V source as not all mosfets will turn on below 5V or thereabouts. I've not checked.
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Steve
Posts: 3294
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Re: N Channel MOSFET testing

Post by Steve »

@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.
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cmorley
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Re: N Channel MOSFET testing

Post by cmorley »

Steve wrote: 13 Nov 2020 15:29 @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
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exxos
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Re: N Channel MOSFET testing

Post by exxos »

Capture.PNG
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Steve
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Re: N Channel MOSFET testing

Post by Steve »

@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
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pixelpusher
Posts: 144
Joined: 27 Dec 2019 21:01

Re: N Channel MOSFET testing

Post by pixelpusher »

One question regarding the SSP6N60 (mentioned in the "last PSU upgrade"): Is there any practical gain over a (working) MTP6N60 that would warrant a replacement?

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