Best Replacement for a 45n20 MOSFET Recommendations

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This N channel MOSFET has been discontinued by Fairchild. TO-220 case


Some of the specs are:

Drain-Source Breakdown Voltage: 200 V

Continuous Drain Current: 35 A

Power Dissipation: 176 W

Resistance Drain-Source RDS (on): 0.065 Ohms

Gate-Source Breakdown Voltage: +/- 30 V

Forward Transconductance gFS (Max / Min): 36 S

2 that I crossed ref. that should work are:


Fairchild

FDP52N20

FDP61N20

Perry, what substitute do you use?
 
Don't know, just opened it up late tonight, powered it on but with the with the bottom cover on, went into protect mode. Powered down, took cover off and just took some quick resistance measurements and found a shorted 45n20b. I have another one (same model) with a different problem that I can look at tommorow and get back to you with the rail voltage.
 
I'm going to bed but will take out the shorted MOSFET tommorrow and get back to you. That was a typo in my previous post, I meant a IRF3415, sorry. Thanks for your help so far, have a good night Perry and I'll post the info tommorrow.
 
The IRF3415's Worked Great

Thanks Perry for the recommendation, the IRF3415's worked out excellent.

The one output was shorted , there were 3 to a channel so I replaced all 3 for that channel so as not to have 2 different MOSFET's on the same channel. Ran the amp for a while, no problems, thanks again.😎
 
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