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HUF75343p3 replacement
HUF75343p3 replacement
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Old 16th November 2020, 01:58 PM   #1
DerSamoaner is offline DerSamoaner  Germany
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Default HUF75343p3 replacement

Does anyone have practical experience with a replacement for the mosfet huf75343p3?

Digikey recommend the STP80NF55-08AG.

Gate resistors are 18 Ohm.

These mosfets are in a Steg Masterstroke 3000 power supply.
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Old 16th November 2020, 03:42 PM   #2
MarioRestucci is offline MarioRestucci  Italy
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I've used IRF3205 and 33-47ohm gate resistor whit no problem.
I've rebuilded 15+ masterstroke msk3000 in this way and never had problem.
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Old 16th November 2020, 03:42 PM   #3
Perry Babin is offline Perry Babin  United States
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What about the IRF3205? I don't know this amp but it works as a good sub in most amps.
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Old 16th November 2020, 03:47 PM   #4
DerSamoaner is offline DerSamoaner  Germany
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Thanks! I will order the IRF3205 and Gate resistors.
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Old 25th November 2020, 06:58 AM   #5
DerSamoaner is offline DerSamoaner  Germany
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IRF3205 with 33 ohm gate resistor works fine. Also changed the driver BD139/140.

Thanks a lot.
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Old 28th November 2020, 07:40 PM   #6
DerSamoaner is offline DerSamoaner  Germany
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I'm searching this diode. The left one is shorted. Driver board output section.

I see only one blue stripe on the cathode.

Any idea?

Maybe put all parts back and measure the voltage on the good one?
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Old 2nd December 2020, 05:40 PM   #7
DerSamoaner is offline DerSamoaner  Germany
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It's a 6.8V zener diode.
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