Mike Hord wrote:

>What's the best way to attach the wires leading to
>a 9V battery snap to a PCB?
>
>Doesn't need TREMENDOUS flexibility (the rest of
>the package is tight enough that it probably won't
>shift too much), but it would be nice if we could
>guarantee to some degree that after 30 or 40
>battery changes, the leads don't tear off the board.
>
>Smaller is better.  Current favored method is
>insertion into PTH, solder, dab of hot glue.  I know
>hot glue is...subpar.
>
>Mike H.
>
>  
>
Direct soldering of wires:

I layout the PCB so that there are two clear thruholes, sized for
the wire + insulation, near the solder points. At assembly. 
the wire is fished through the holes THEN soldered into the
appropriate pad. This provides a simple way for the flying
lead to buffer shock and vibration. It's cheap and it works.

The problem with hot glue is that when the PCB heats to
running temperature, the glue loses its holding power. I
think "pookie" (RTV) is a better choice if you have no other
option.

--Bob

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