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How many Watts?

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MikeMl

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Assume you bolt a Power FET to the face of one of these, how many watts can it dissipate while keeping the face of the heatsink at say 50degC?
 

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Thunderchild

New Member
are you sure jawed ? isn't that a standard CPU cooler, the average CPU uses 50-70 watts.

Mike you would need a clip os some kind unless you drilled and tapped the heatsink but I wouldn't recomend it
 

Thunderchild

New Member
I suppose it depends on the allowable temperature, CPU's need to stay around 50-70 C these days, if higher temps are allowed by the device being cooled then more power can be dissipated, depends on ambient temperature, computer cases get warm, if there is greater air flow it should be able to dissipate more
 

crutschow

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This test of several CUP coolers CPU coolers compared! measured above 0.5 to near 1.0 degrees C rise per watt. From the pictures I would guess your unit is around 0.75 degrees C/W. Thus you can dissipate 33W for a 25C rise to give a 50C heatsink temperature with a 25C air ambient.
 
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Hero999

Banned
They're also quite cheap too as they can often be picked up for nothing!
 

MikeMl

Well-Known Member
Most Helpful Member
Thanks,

I was looking at one as a load for discharging batteries. West Mountain Radio allows up to 150W in their CBAII
 

Thunderchild

New Member
I have to say that some of the fan coupling designs are quite laughable, I've just been looking through ebuyer, the amount of fans that just sit in air and have no shroud is baffling, to think where i work we got a radiator fan housing returned due to performance issues because there was on a 35 cm diameter fan a 1 cm larger tip clearance than specified between fan tips and housing. and yet other people seem to think that a fan somewhere on the heatsink with no shrould looks cool and will work....
 
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