Phil,

It does not include vibration but just temperature cycling.

regards - wee mei

"Crepeau, Phil" wrote:

> hi,
>
> did your ess include vibration?  i've seen fasteners fail, and the subsequent fretting in vibration caused a 'dirty' appearing surface.
>
> phil
>
> -----Original Message-----
> From: fullname [mailto:[log in to unmask]]
> Sent: Tuesday, September 25, 2001 12:34 AM
> To: [log in to unmask]
> Subject: [TN] Dirt on Coated Board (UC)
>
> Some assembled boards were coated with Humiseal 1B31. After the ESS
> tests at 110 degree C, dirts were found on the board and component
> surfaces on both sides. I have checked the data specification on 1B31
> and found that under cured enivronemnt, the coating should withstand -65
> to +125 degree C.
>
> Can someone advice me what could be the cause of this problems?
> Your assistance is greatly appreciated.
>
> Regards - Wee Mei
>
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