Hi David!

Not sure quite you mean when you say; "Pre-formed tab to add extra volume to
the spheres." Can you elaborate further?

You also say that you want to avoid adding solder paste, can I ask why? If
the ball-pitch, ball count, and ball pattern is pretty standard, you can buy 10
Flextac stencils from Circuit Technonolgy Center for around $50. They work
wonderfully too! Go to:

http://www.circuittechctr.com/products/201-3120.shtml

and check them out. I've got pictures up on my page of me using one to solder
a Power PC BGA to a SMT-to-PTH adapter, which I'm sure if there wasn't
something like Flextac stencils around, would have been a real bear to do.

Give us a few more details...

-Steve Gregory-


> Hello Technetters,
>
> I have some BGA sockets which I am trying to solder to PCBs.
>
> The sockets have stand-offs which prevent the solder spheres from collapsing
> and making a good mechanical/electrical connection.
>
> Ideally what I am looking for is a pre-formed tab to add extra volume to the
> spheres.  I do not have an in-house machine shop to make a stencil to apply
> paste and quite frankly I would like to avoid that course if possible.
>
> Thank you in advance for your help,
>
> David Tremmel
> Technical Manager
> Belmont Component Services
>


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