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16th November 2020, 01:58 PM
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#1 |
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diyAudio Member
Join Date: Jan 2020
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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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TOE8851 - 32V 10A / QJ1503 - 15V 3A / Dell AA24150L - 12V 175A / Yokogawa DL1640 / Fluke 87V / Fluke 325 / Sony CDX-GT650 / Weller WSD 81 / Hot Air Station / 4x Dummy Load 1000W 4ohm |
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16th November 2020, 03:42 PM
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#2 |
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diyAudio Member
Join Date: Aug 2012
Location: NAPOLI
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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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Two things save us in life: love and laugh. If you have one, that's fine. If you have both, you are invincible. 
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16th November 2020, 03:42 PM
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#3 |
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diyAudio Member
Join Date: Nov 2003
Location: Louisiana
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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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16th November 2020, 03:47 PM
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#4 |
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diyAudio Member
Join Date: Jan 2020
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Thanks! I will order the IRF3205 and Gate resistors.
__________________
TOE8851 - 32V 10A / QJ1503 - 15V 3A / Dell AA24150L - 12V 175A / Yokogawa DL1640 / Fluke 87V / Fluke 325 / Sony CDX-GT650 / Weller WSD 81 / Hot Air Station / 4x Dummy Load 1000W 4ohm |
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25th November 2020, 06:58 AM
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#5 |
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diyAudio Member
Join Date: Jan 2020
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IRF3205 with 33 ohm gate resistor works fine. Also changed the driver BD139/140.
Thanks a lot.
__________________
TOE8851 - 32V 10A / QJ1503 - 15V 3A / Dell AA24150L - 12V 175A / Yokogawa DL1640 / Fluke 87V / Fluke 325 / Sony CDX-GT650 / Weller WSD 81 / Hot Air Station / 4x Dummy Load 1000W 4ohm |
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28th November 2020, 07:40 PM
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#6 |
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diyAudio Member
Join Date: Jan 2020
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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?
__________________
TOE8851 - 32V 10A / QJ1503 - 15V 3A / Dell AA24150L - 12V 175A / Yokogawa DL1640 / Fluke 87V / Fluke 325 / Sony CDX-GT650 / Weller WSD 81 / Hot Air Station / 4x Dummy Load 1000W 4ohm |
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2nd December 2020, 05:40 PM
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#7 |
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diyAudio Member
Join Date: Jan 2020
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It's a 6.8V zener diode.
__________________
TOE8851 - 32V 10A / QJ1503 - 15V 3A / Dell AA24150L - 12V 175A / Yokogawa DL1640 / Fluke 87V / Fluke 325 / Sony CDX-GT650 / Weller WSD 81 / Hot Air Station / 4x Dummy Load 1000W 4ohm |
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