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Old 19th November 2003, 09:00 PM   #1
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Default Seeking advise on mosfet equivalents

I was recently given two high powered power amps which need replacement mosfets (j50 and k135)
I am having dificulty sourcing the replacement parts and was wondering if there are equivalents for the mosfets.
Any advice would be greatly appreciated - Luke -
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Old 20th November 2003, 02:58 PM   #2
mskeete is offline mskeete  United Kingdom
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Old 20th November 2003, 09:06 PM   #3
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djmiddelkoop's Avatar
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Location: Noord-Holland has them.
They are not the original (obsolete Hitachi) but they are ok, thrust me.

“Information is not knowledge Knowledge is not wisdom
Wisdom is not truth Truth is not beauty Beauty is not love Love is not music Music is THE BEST”
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Old 21st November 2003, 05:29 AM   #4
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I have a bunch of them for sale, unsused and in their original box.
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Old 24th November 2003, 08:21 PM   #5
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Default IR vs Toshiba MOSFET SOAs

I was checking out the IRFP240 & IRFP9240 data sheets vs the Toshiba 2SJ201 & 2SK1530 data sheets, and differences in the single pulse SOA envelopes really leaped out at me. The Toshibas spec the same envelope for a 100mS pulse as IR does for a 10mS pulse. Is this a real difference in SOA, or is IR just being very conservative here? If it's real, it would make a big difference for my intended application.

Also, anybody know a stocking distributor for the Toshiba power mosfets in the US?

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Old 25th November 2003, 10:27 AM   #6
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Keep away from the Exicons if the mosfets are used near their ratings - the equivalents aren't quite so equivalent. Although they are more expensive, the Farnell choices are more reliable.

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