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-   -   WTB IRFP9240 MOSFETs (http://www.diyaudio.com/forums/swap-meet/170986-wtb-irfp9240-mosfets.html)

bobschwenkler 29th July 2010 02:21 AM

WTB IRFP9240 MOSFETs
 
Hi All,

Been looking around on the internet to replace the output stages in an amp I've got. I'm looking for 2x5 (2 amp sections, 5 MOSFETs each. 10 total.) of these.

Digikey lists them as on order too. Is this a current production part that's just high in demand?

mach1 29th July 2010 02:34 AM

IRFP9240 - eBay (item 300335639707 end time Jul-29-10 17:00:37 PDT)

no affiliation.

bobschwenkler 29th July 2010 03:22 AM

Aha, thanks. eBay didn't even occur to me.

woody 29th July 2010 04:04 PM

Have you checked to see if these need to be matched. Usualy an output
stage will need matched devices.

bobschwenkler 29th July 2010 05:54 PM

I'm looking into it. The schematic specifies 20-30mV across 5% .47 ohm source resistors.

The Vishay spec sheet doesn't give a spread of drain currents, so I'm not sure how to calculate the unmatched spread I might get...

bobschwenkler 29th July 2010 05:59 PM

I have some. I'm figuring out how I want to approach this. By finding matched sets, matching myself, or buying unmatched and seeing how that goes.


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