irfp240 max dissipation

[hugobors]

Hello,

I've obsverved that Nelson polarise the irfp240 at around 20W in all the Aleph series. Is it to stay at something like 1/6 of the max power that can handle this device or is it because the case (to247) support only this amount of power to work in long life operation?
I ask this question to know if we can run a device in the same package but rating at 400W at more than 20W.

Thanks
Hugues

 

[Nelson Pass]

The device is rated at 150 watts at a 25 deg C case temperature,
derate at 1.2 W per deg C.

I like to run them around 25 watts, and I have run them as
high as 50 watts without excessive failure rates, but this is
heat sink dependent.

 

[hugobors]

Thanks a lot

Hugues