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Old 5th February 2002, 08:32 PM   #1
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Default Matching the mosfets for the ZEN

Hello,

is it essential to match the mosfet (IRFP140) to divices in another channel, Or can I use unmatched divices?

Is the IRF044 the better choise?

Thanks

GŁnter
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Old 5th February 2002, 08:39 PM   #2
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The 044 is a bit better.

Unmatched is fine. I match mine anyway, for the
same reason that my left and right speaker cables
are the same length and type.
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Old 6th February 2002, 06:41 PM   #3
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Nelson,

I'm using the 044n in my Zen. I have read here that the 044 w/ the "n" designation is not good for audio. Do you know anything about this?

Vince
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Old 6th February 2002, 08:01 PM   #4
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I am not aware of any 044N as such. There is a letter
which appears to be part of the lot code, and I have a batch
of these with the "M", but I don't think there's anything
to it.

By they way, we are intending to make these available
in matched sets on passdiy.com for the 900 or so that
I have.
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Old 6th February 2002, 08:36 PM   #5
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An hour later:

I looked them up, and there is indeed an 044N, and
the N apparently stands for "new"

It is not the same part after all, with the biggest
alteration being a reduction in wattage rating
to 100 watts down from 180 and a lower Rds
from .028 to .02

Beyond that, I don't know whether they sound
better or worse, my only experience being with
044's. I wouldn't hesitate to try them out,
however.
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Old 6th February 2002, 08:57 PM   #6
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It's just that some persons on this forum have said these are better for switching rather then amplification.

My Zen sounds fine. I have 10 of these and will probably build 4 mini-alephs.

Thanks for the reply.
----- ------ ------ ------ ------ ----- ------
Digi-Key Part Number IRFP044N-ND

Manufacturer Part Number IRFP044N
Description HEXFET 55V .024 RDS TO-247
Standard Package 25
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