Gil

Are you sure it melted the copper? Given that copper melts at a  
whopping 1084DegC I suspect you might have some moisture that into  
the works?

Kindest regards,

Graham

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On 4 Sep 2007, at 18:25, Zilber Gil wrote:

> Hi,
>
> Recently one of our motherboard failed. It reaches very high  
> temperature
> that melts the copper and explodes shooting (from the side of the  
> board)
> the melt copper to over 20 cm. the shooting hole cause delamination of
> the board in the area. A lot of black smoke and was also seen. The max
> voltage of the board is about 50V. The board worked fine for more  
> then a
> year. What could be the failure mechanism? Could it be due to  
> conductive
> filament formation (although the PCB should be free of that)?
>
> Thanks
>
> Gil Zilber
> Elta Systems
>
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