RFP40N10 drop in replacement?

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User21208
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First question asked
4957.attach

The attached circuit uses 12 RFP40N10 Harris TO220 parts (3 per bank). I have tried using IRF3710z but they repeatedly fail under load stress, almost immediately. Total rail voltage is 80v. Base switching frequency is around 80khz.

Is the IRF3710z not a good substitute in this circuit?

Is it being driven improperly in this circuit?

Is there a drop in replacement Infineon offers for the RFP40N10 ? Perhaps a more modern MOSFET with better specifications that won't require modification of the circuit?

Thank you.



Matt
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1 Solution
Abhilash_P
Moderator
Moderator
Moderator
50 likes received 500 replies posted 250 solutions authored
Hi,

Can you look into the following MOSFET's whose parameters matches closely with your application and the gate driver circuit.

IRFB4110Pbf
IRFB4310Z
IRFB4410
IRFB4710

Please let me know if you face any issues while using it.

Regards,
Abhilash P

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1 Reply
Abhilash_P
Moderator
Moderator
Moderator
50 likes received 500 replies posted 250 solutions authored
Hi,

Can you look into the following MOSFET's whose parameters matches closely with your application and the gate driver circuit.

IRFB4110Pbf
IRFB4310Z
IRFB4410
IRFB4710

Please let me know if you face any issues while using it.

Regards,
Abhilash P
0 Likes