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Old 29th July 2010, 02:21 AM   #1
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Default 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?
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Old 29th July 2010, 02:34 AM   #2
mach1 is offline mach1  Australia
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IRFP9240 - eBay (item 300335639707 end time Jul-29-10 17:00:37 PDT)

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Old 29th July 2010, 03:22 AM   #3
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Aha, thanks. eBay didn't even occur to me.
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Old 29th July 2010, 04:04 PM   #4
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Have you checked to see if these need to be matched. Usualy an output
stage will need matched devices.
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Old 29th July 2010, 05:54 PM   #5
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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...
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Old 29th July 2010, 05:59 PM   #6
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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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