> but when you reflow the board, will the components on 
> the bottom side fall off at high temp?
>

Depends on the mass of the components.  Typically, 
small components such as 0805 resistors and caps stay 
put due to the surface tension of the solder.  You just 
have to make sure when you layout the PWB that you only 
put small parts on the bottom.

You can reflow both sides of the PWB at the same time. 
Solder paste is tacky enough to hold the small parts 
upside down in the oven during reflow.  Just don't 
jostle the board too much during insertion and removal 
from the oven.


Ken

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