In a message dated 9/7/06 8:10:01, [log in to unmask] writes:
> I have seen thermal cycling data from two different sources that suggest
> high aspect ratio PTH >9:1 fail more quickly than an 0805 chip resistor
> solder connections.
>
>
Hi,
While this is generally true, it is not the aspect ratio that you need to
consider, but the PCB thickness and the drilled hole diameter independently.
Werner
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