Quote:
Originally Posted by alancsalt 
Well, looking it up...
Well, looking it up...
Quote:
A heat spreader is most often simply a copper plate, having high thermal conductivity. Functionally, it is a heat exchanger that moves heat between a heat source and a secondary heat exchanger whose surface area and geometry are more favorable. By definition, the heat is "spread out", such that the secondary heat exchanger increases the heat capacity of the assembly. These properties make it a better match for an air heat exchanger, since the low heat conduction for air in convection is matched with higher surface area.
EXACTLY ... and then when you attach the IHS with a fluxless solder process it almost literally becomes part of the die (bonded metal-->metal contact) exponentially increasing/improving heat exchange! ... I've googled/searched everywhere and cannot find info on someone who has re-attached an IB IHS with a fluxless solder process
... Probably a more complicated process to do successfully than it may sound, but if anyone runs across such info please post/link 
EDIT: Bottom line ... if you had a choice of IHS attachement by fluxless solder or TIM at the same cost ...
What would you choose? ... Dooh
Edited by TomcatV - 5/25/12 at 11:07am
Too Easy
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Too Easy
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