The assembly house should know what it is buying from the supplier.  The
performance requirements should be spelled out in the purchase contract.

Solderability testing frequencies should be determined by the assembly house
based upon the historical performance of the suppliers. the testing should
be done as an audit function, not a 100% test.

The solderability test is usually done before the board is assembled.  What
good does it do to assemble non-solderable pwb's?  Using your soldering
operation for your solderabillity test is not recommended.

Al Cash
> ----------
> From:         Ken Patel[SMTP:[log in to unmask]]
> Reply To:     TechNet E-Mail Forum.;Ken Patel
> Sent:         Monday, May 11, 1998 3:26 PM
> To:   [log in to unmask]
> Subject:      [TN] PCB Solder Sample: Solderability Test
>
> Hi all,
>
> I was talking about PCB solder sample which I am getting with every lot of
> PCBs. Someone mentioned that it's for solderability test then I have these
> basic questions -
> 1) Whose responsibility is to do the solderability test, fab house or
> assembly house. Assembly house do not want to do solderability test as
> they thinks that they should be getting solderable PCBs. And not being
> turn-key supplier, my assembly house resist from doing solderability
> test.
>
> 2) Why one should do solderability test and how often?
>
> 3) Is IPC recommend PCB solderability test to be done prior to assembly
> process?
>
> re,
> ken patel
> ______________________________________________________
> Ken Patel                       Phone:  (408) 490-6804
> 1708 McCarthy Blvd.             Fax:    (408) 490-6859
> Milpitas, CA 95035              Beeper: (888) 769-1808
>
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