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DPAK FET dissipation?

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treez

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Can a DPAK FET dissipate 1W if mounted on a PCB where the extra cooling copper connected to the drain pad is just an extra square centimetre?
 

I will say yes, but better is to check datasheet for particular DPAK (TO-252) FET ?


Best regards,
Peter
 
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..As with other datasheets, there thermal data corresponds to a part mounted on a copper land of size 25mm square, and I never find that I have that amount of room available on a pcb.
 

Designer of PCB should count on that, or if mistake is made PCB ver 2 should have correction of that lack.

From my expirience usually second or third PCB design is right PCB. First two can be counted as beta release. :smile:


Best regards,
Peter
 
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No, it cannot DPAK FET dissipate 1W if mounted on a PCB.
 
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Then why do you ask? :wink:

Also: as always 2 oz copper is used for these graphs, which is not a standard buildup.
 
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sorry I found the graph after I asked...3W in dpak seems immense, even if 2oz cu
 

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