IRFP244 ---- Fairchild Vs. IR for Aleph 2?

gengis · 20th May 2005, 08:05 PM

For the IRFP244 mosfet, anyone has experience with Fairchild's version (TO-3P) and the IR's own (TO-247)?

Any preferences to one or the other?

The Fairchild substitute is much cheaper at Mouser.

Nelson Pass · 20th May 2005, 09:49 PM

No preference. On the P channel devices, there is a
preference for Fairchild in Common-Source applications.
Same goes for Harris parts.

kilowattski · 21st May 2005, 12:13 AM

I donno, I have built a few of the Pass Labs Designs including an Aleph 5, Aleph P v1.7, Son of Zen and Aleph X100 (Amp works but chassis is not done yet). They all work extremely well and I have used IRF Mosfets. I think that Nelson uses both IRF and Fairchild Mosfets. I don't think it makes much of a difference.

20th May 2005, 08:05 PM	#1
gengis diyAudio Member Join Date: Feb 2005 Location: Midwest--IA	IRFP244 ---- Fairchild Vs. IR for Aleph 2? For the IRFP244 mosfet, anyone has experience with Fairchild's version (TO-3P) and the IR's own (TO-247)? Any preferences to one or the other? The Fairchild substitute is much cheaper at Mouser.

21st May 2005, 12:13 AM	#3
kilowattski diyAudio Member Join Date: Aug 2003 Location: Long Island, New York	I donno, I have built a few of the Pass Labs Designs including an Aleph 5, Aleph P v1.7, Son of Zen and Aleph X100 (Amp works but chassis is not done yet). They all work extremely well and I have used IRF Mosfets. I think that Nelson uses both IRF and Fairchild Mosfets. I don't think it makes much of a difference. __________________ ----------------------------------------------- Kilowattski

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20th May 2005, 09:49 PM	#2
Nelson Pass The one and only Join Date: Mar 2001	No preference. On the P channel devices, there is a preference for Fairchild in Common-Source applications. Same goes for Harris parts.

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