PPI PC2400 OEM Power Supply FET?

midnightg35x · 23rd March 2010, 03:19 PM

I have a PPI PC2400 that has some blown power supply FETs. Somebody has tried to repair this previously (and poorly) and it has a mix and match of IRF44N's and NTE 2395's. Which one is the OEM FET? If it is the IRFZ44N, I plan to replace them with the IRFB3806 because I have used these as substitutes before and I have an almost full tube of them left. Also, is 47ohm correct for the gate resistor? Both the IRFZ44N's and NTE 2395's have 47ohm resistors that look original, but I can't be 100% on that. Thanks

pergo · 23rd March 2010, 06:46 PM

IRFB3806 are good for this application.
http://www.irf.com/product-info/data...rfs3806pbf.pdf
very very low gate capacitance device. 47ohm it's ok.

check the colour for gate resistor, so we're sure for 47ohm

midnightg35x · 23rd March 2010, 08:23 PM

Quote:

Originally Posted by pergo

IRFB3806 are good for this application.
http://www.irf.com/product-info/data...rfs3806pbf.pdf
very very low gate capacitance device. 47ohm it's ok.

check the colour for gate resistor, so we're sure for 47ohm

I haven't actually measured the gate resistors because I would be replacing them all anyway. The color bands indicated they were 47 ohm, so that's what I will replace them with

Thanks

pergo · 23rd March 2010, 08:29 PM

great

you can use IRFBs without problem

23rd March 2010, 03:19 PM	#1
midnightg35x diyAudio Member Join Date: Jan 2009 Location: Iowa	PPI PC2400 OEM Power Supply FET? I have a PPI PC2400 that has some blown power supply FETs. Somebody has tried to repair this previously (and poorly) and it has a mix and match of IRF44N's and NTE 2395's. Which one is the OEM FET? If it is the IRFZ44N, I plan to replace them with the IRFB3806 because I have used these as substitutes before and I have an almost full tube of them left. Also, is 47ohm correct for the gate resistor? Both the IRFZ44N's and NTE 2395's have 47ohm resistors that look original, but I can't be 100% on that. Thanks

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23rd March 2010, 06:46 PM	#2
pergo diyAudio Member Join Date: Dec 2008	IRFB3806 are good for this application. http://www.irf.com/product-info/data...rfs3806pbf.pdf very very low gate capacitance device. 47ohm it's ok. check the colour for gate resistor, so we're sure for 47ohm

23rd March 2010, 08:29 PM	#4
pergo diyAudio Member Join Date: Dec 2008	great you can use IRFBs without problem

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