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I would like the highest current, wattage device that would be a drop in for this transistor. It is used for a ripple filter in a headphone amp. Can't do this myself. I'm looking at a 20a STP20NM60FD or equvilant? This is in a TO-220-3 package. Why, because bigger is better so please don't ask. Thanks, Tweaker
Edits: 04/22/16Follow Ups:
Digikey tells me that the Vishay SiHP15N60E will be a drop in replacement for the 2SK2750. Same gate min and max voltage. ?? Tweaker
Edits: 04/24/16
The operating characteristics are very similar other than the 20a STP20NM60FD is a heavier duty version.It has a higher dissipation and it handles more current..Here is the other part,the 2SK-750 is infinitely more than adequate for your application as a ripple filter.I haven't seen the schematic but one of the obvious functions is,it is being used as a capacitance multiplier and if that's the case,you are not going gain anymore filtering however, the drain curves did look slightly more linear but since it's being used in a DC filtered supply source and not for audio amplification,I doubt this will make any difference that you would notice at least on measurement.
Both are very nice enhancement mode Mosfets that can run at 1mhz and the 2SK2750 is a 35 watt part that runs at 600v at 3.5a of drain current...In a pulse application it can handle much more but you aren't using it that way.
A friend you get for nothing,an enemy has to be bought
The designer of the amp says that the STP diode won't work. The 2SK2750 has a diode to ground ( and gate) that many other diodes don't have. According to the people who made the amp this circuit needs the 2 diode version. Just couldn't be easy. Tweaker
The gate threshold is 2v on the 2sk2750 and 3v on the two STP high wattage devices. Does this matter?? Tweaker
Then there is another even higher rated standard N-Channel FET, the STP31N65M5, 650v,22A. Close to 5 bucks. "Nothing succeeds like excess". Oscar Wilde. Tweaker
So Mike, I can drop it in and be sure of no problem , correct? No problem with oscillation?? I believe that the bigger the dies in a device the better it will sound. Overkill. Fat power cord, the biggest fuse value that you can be safe with. The power to the amp goes through this device just like it goes through the fuse. If I am wrong it's only a few minutes and a buck. Thanks for the reply, Tweaker
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