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Old 11th October 2006, 12:12 PM   #1
RussB is offline RussB  United Kingdom
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Default WTB: Matched IRFP240 (16 off +?)

VGS matched to within 100mV. Any suggestions where I can get these without buying a large batch and matching myself. Don't mind paying international postage.

Although I need 16, a few spares may be prudent!

Many Thanks,
Russell
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Old 11th October 2006, 01:11 PM   #2
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to match that precisely you have to maintain a uniform time for each device AND uniform temperature, otherwise you're just fooling yourself. From a statistical standpoint it should be possible with one tube of 25 pieces to get +/- 0.1V, to match 16 pieces to +/- 0.01V you need about 100 devices.

fwiw, i match mine to 10 millivolts using a 1 amp constant current source (a Tektronix PS5010). Nelson shows a car battery and a resistor
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Old 13th October 2006, 07:17 PM   #3
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Default Spares?????

Hi

I still have some spare IRPF240 and IRFP9240 left from my X1000 project...
As I bought 2 complete sets - 320 fets in total - I still have 240's matched within 20 mv.
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Old 7th November 2006, 04:07 PM   #4
sts9fan is offline sts9fan  United States
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Default IRFP240 for sale?

Hello,

I saw a post that you may have some matched IRFP240 for sale?
I would love to buy some from you if you still have them. Thanks for your time and I hope to hear from you.

Kris
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Old 7th November 2006, 05:35 PM   #5
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Default I saw a post that you may have some matched IRFP240 for sale?

Hi Kris,

Send me a mail directly and I will see if I can help you.

Marcel.
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Old 17th April 2007, 09:20 AM   #6
lall is offline lall  Mauritius
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Hello Tarasque
Do you still have some IRFP240 left? I need 3 pairs matched, posted to Switzerland/France
thanks
lall
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Old 17th April 2007, 10:10 AM   #7
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Quote:
Originally posted by lall
Hello Tarasque
Do you still have some IRFP240 left? I need 3 pairs matched, posted to Switzerland/France
thanks
lall

Hi Lall

Pls send me a private mail.

Thanks...Tarasque
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