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IRFP450 Replacements?
IRFP450 Replacements?
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Old 14th March 2007, 02:11 AM   #1
hernanstafe is offline hernanstafe  Argentina
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Join Date: Feb 2007
Location: Argentina
Default IRFP450 Replacements?

I'm going to build Quasi's amp and i was wondering if anyone knows any replacement for the FETS used there, IRFP450.

Thanks Everyone!
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Old 14th March 2007, 02:27 AM   #2
quasi is offline quasi  Australia
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Location: Adelaide, Australia
G'day Hernanstafe,

The amp modules in question will work well with any mosfet device in the same series as the IRFP450. I.e; IRFP250, 350 etc.

Other mosfets can be used too provided they are a TO247 package. Minimum specifications are;

Vds minimum = your peak to peak idle rail voltage + 20%. For 70 volts rails this is 168 volts.

Pd minimum @ 25 degC = 180w

Low gate capacitance (relatively)

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