alan smith wrote:
> Have a board where I need to spin it, client indicated he wants to stick to thru hole technology because its mounted on a device that is prone to vibration.  Anyone have experience of SMT in a similar application?  Its not like a shake table, maybe more of automotive.  Im thinking that if its conformal coated, that should take care of keeping smt parts where they belong?
>   
Personally, I hate generalities, but GENERALLY SPEAKING (see? I already 
screwed up) SMT devices are better for vibration-prone environments, no 
question about it. The exception are connectors. Connectors need to be 
thru-hole, because a 60mil by 60mil pad will NOT support a vibrated 
connector. Even those tiny cute 2mm connectors hold up better if thruhole.

The primary reason devices work better as SMT is that the mass is MUCH 
smaller.

--Bob A
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