[SI-LIST] Re: Fw: PCB Copper Heatsink

Check  www.micrel.com for their app note on copper heatsinks.  Also see 
www.ipc.org.
Fred Townsend

GullWing UK wrote:

>Subject: Re: PCB Copper Heatsink
>
>
>  
>
>>Dear SI'ers,
>>                     I intend using a new DDR I/II power device.  The
>>    
>>
>device
>  
>
>>needs to dissapate 38.7degC / W to keep below the maximum junction
>>temperature.  Does anybody have tables/equations to calculate the required
>>copper necessary on the PCB to dissapate this heat.
>>
>>Regards
>>Steve
>>Gullwing Ltd
>>
>>    
>>
>
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