Hi,

I'd like to get your input on pre-heating PCBs in an oven before wave
soldering. Do you do it ?  On all your PCBs or only on multilayer ones ?
 For how long and at what temperature ?
Aside from humidity that can be entraped and suddenly released, thus
creating delamination, what other problems may some one face if they don't
pre-heat their PCBs in an oven before wave soldering ?

Thank you.

Richard Blanchet
Manufacturing Engineer
Canadian Marconi Company

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