Can a Warped Heatsink be Straightened for PCB Mounting?

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Seth.T
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Hi,

I need advise on a heatsink warpage(see attached), the heatsink is deflected in the middle about 2mm off, i need to mount pcb on it and might cause cracking over time, I was wondering if any experienced engineers have a good approach to straighten it?



Thanks
Seth
 

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Seth.T said:
Hi,

I need advise on a heatsink warpage(see attached), the heatsink is deflected in the middle about 2mm off, i need to mount pcb on it and might cause cracking over time, I was wondering if any experienced engineers have a good approach to straighten it?



Thanks
Seth

Welcome to the PF. Can you just buy a new one? How did it get warped?
 
Hi Berkeman,
I am buying from OEM , due to certain mass fabrication process limitation(improper cooling or uneven heating from them), a little warping is inevitable. Is there anyway i can add a secondary operation to straighten it out? i thought of machining it to be flat however the fins would be extremely difficult and not worth the cost.