Complementary V-FET's other than IRF's??? - diyAudio
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Old 7th November 2006, 07:10 PM   #1
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Default Complementary V-FET's other than IRF's???

Hi,

I have tried to search other brands than IRF's V-FET's for fairly complementary pairs but don't find much at all.
Would be glad to receive advices on V-FET pairs that could be used as output devices in an amplifier.
So far I know at least Toshiba 2SJ200/-201 and 2SK1529/-1530 but they are rather expensive.
For the moment there's no power spec so any advice is thankful!

Cheers Michael
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Old 8th November 2006, 12:13 AM   #2
Tim__x is offline Tim__x  Canada
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There doesn't seem to be much.
I don't know what power level you're looking for.
These 30v TO-220 from On-Semi look remotely complementary, not great mind you.

MTP50P03HDL-D.pdf
NTP75N03L09-D.pdf
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Old 9th November 2006, 06:47 AM   #3
Leolabs is offline Leolabs  Malaysia
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Have you try Exicon or Magnatec??
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Old 9th November 2006, 08:34 AM   #4
estman is offline estman  Estonia
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Default Re: Complementary V-FET's other than IRF's???

Quote:
Originally posted by Ultima Thule
Toshiba 2SJ200/-201 and 2SK1529/-1530 but they are rather expensive.
Toshiba has new great pair: 2SK3497/2SJ618.
Accuphase uses them. Even more expensive.
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Old 9th November 2006, 09:34 AM   #5
estman is offline estman  Estonia
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2SK3497 - English datasheet has values of Crss/Coss reversed !
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Old 9th November 2006, 10:32 AM   #6
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Cheap alternatives.

Fairly symmetrical/linear and reliable, but not "audiophool" grade.
IRFP240
IRFP9240
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Old 9th November 2006, 10:44 AM   #7
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I believe he's asking for alternatives to the very ones you have suggested...
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Old 9th November 2006, 11:33 AM   #8
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Fairchild suggests their FQA19N20C and FQA12P20 as replacements. A quick glance at the data sheets shows about as close a compliment as the IR devices (not great) Both are about $2 @ 25 pieces from Mouser.

The IRFP9140 is a closer compliment to the IRFP240. If your application allows, you may want to look at the suggested alternative FQA17P10.

I haven't tried any of these yet, though.
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Old 9th November 2006, 09:15 PM   #9
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Default Re: Re: Complementary V-FET's other than IRF's???

Quote:
Originally posted by estman


Toshiba has new great pair: 2SK3497/2SJ618.
Accuphase uses them. Even more expensive.
Tere Estman,

interesting, but being even expesiver dosen't sound good... I will look up their datasheets, always interesting study new components.


Quote:
Originally posted by BobEllis
Fairchild suggests their FQA19N20C and FQA12P20 as replacements. A quick glance at the data sheets shows about as close a compliment as the IR devices (not great) Both are about $2 @ 25 pieces from Mouser.

The IRFP9140 is a closer compliment to the IRFP240. If your application allows, you may want to look at the suggested alternative FQA17P10.

I haven't tried any of these yet, though.

Thanks Bob,

that could be something!

Let's keep on posting guys, I hope this thread could as well develope to a list on fairly complementary V-FET's from other brands everyone could enjoy of!

Cheers Michael
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Old 10th November 2006, 06:51 AM   #10
dangus is offline dangus  Canada
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I'm not sure if this is relevant, but a post in another forum suggested that BUZ900 could be subbed for 2SK135 and BUZ905 for 2SJ50
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