I'm really curious about the how they rate the power capabilities of MOSFETs, in particular the IRFZ46N. I'm not really sure what rating to go by.
I plan on running about 4-5 amps through it at 12-13 volts, so 65 watts at most. The datasheet says the TO-220 package can dissipate 50 watts, but then they list the max power dissipation at 25C at 107 watts and max current at 37 amps. When my circuit is near/at 100% duty cycle, will 65 watts be too much? It is unlikely I'll be running over 50% anyways, and I can slap a large heat sink on it.
In less words, can you run 60-70 watts through an IRFZ46N w/heatsink?
btw, http://www.dprg.org/tutorials/2005-11a/index.html is the circuit in question. It will be opperating four fuel injectors.
I plan on running about 4-5 amps through it at 12-13 volts, so 65 watts at most. The datasheet says the TO-220 package can dissipate 50 watts, but then they list the max power dissipation at 25C at 107 watts and max current at 37 amps. When my circuit is near/at 100% duty cycle, will 65 watts be too much? It is unlikely I'll be running over 50% anyways, and I can slap a large heat sink on it.
In less words, can you run 60-70 watts through an IRFZ46N w/heatsink?
btw, http://www.dprg.org/tutorials/2005-11a/index.html is the circuit in question. It will be opperating four fuel injectors.