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Old 26th June 2010, 01:50 PM   #1
serious_lee is offline serious_lee
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Default IXYS N-Type MOSFET

I have access to some used IXFB38N100QF MOSFETs and I was wondering if they'd be acceptable for audio use. The price for these is quite high at $18 or so, but my price for them is considerably less They're rated at 1000V/38A so they seem like a little overkill. Please take a look at the datasheet. I'd love to hear any comments from more experienced builders.

BTW, I tested a few for Vgs and they come in slightly higher than IRFP240a at around 6V.

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File Type: pdf MOSFET(N) - IXYS 1000V 38A.pdf (133.0 KB, 28 views)
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Old 26th June 2010, 02:25 PM   #2
star882 is offline star882  United States
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They'll work nicely for power supply applications.
"Fully on MOSFET = closed switch, Fully off MOSFET = open switch, Half on MOSFET = poor imitation of Tiffany Yep." - also applies to IGBTs!
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Old 28th June 2010, 10:18 PM   #3
serious_lee is offline serious_lee
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Do you have any examples of MOSFET based power supplies? I have only seen CRC style supplies with large cap reserves.
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Old 28th June 2010, 10:50 PM   #4
richie00boy is offline richie00boy  United Kingdom
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A single pair would be good for a 400W sub amp. They seem reasonably fast and you might just get away with using them full range. They take a lot of driving though.
www.readresearch.co.uk my website for UK diy audio people - designs, PCBs, modules and more.
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