Re: OT 0805 resistor noise

SioL wrote:

"Robert Baer" <robertbaer@xxxxxxxxxxxxx> wrote in message news:a_vTe.2077$9x2.1948@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

If the PCB is run thru a hot air tunnel for reflow both times, there is no residual stress.
Case 1: parts so small that no adhesive is needed = the liquid solder's surface tension holds them in place at all times, and the cooling dimensional change is so small that it would seem the stress is more theoretical than a practical "problem".
Case 2: larger parts with adhesive = do not move, so zero problem. 


Interesting posts, thanks!

I am considering starting a SMT placement business here in the EU. How much does
a smaller maybe used pick and place cost in the US? Just considering my options for
a conservative start.

Seems the minimum charge is around $100; there is the NRE for the "silk screen" for the solder paste, and the quote-per-part for assembly is definitely higher for low quantity than for higher quantities.
Some assembly houses may break that down for "set-up charge" which (i think) would be a constant, and then quote-per-part for assembly, which would go down a little at (say) 1,000 then 5,000 etc.
There also is an extra charge if you want parts sooner than standard thruput.
.