Genny,

We try to keep process/materials consistent across all CMs. We qualify a
primary material set and have an approved equivalent as a backup, because
in some geographic areas, a particular brand name may not be available
readily or a supplier may discontinue etc. We also conduct an audit of our
CMs for process/materials compatibility with what we have approved.  With
lead free , this is even more critical.


At 01:08 PM 7/18/2005 -0600, Genny Gibbard wrote:
>For those of you that outsource your board stuffing to more than one
>contractor...
>We have 3-4 different CM's that we use for populating our boards.
>Do you insist that they all use the same brand or type of solder paste/bar
>solder, so that you can ensure compatibility with wire solder used in house?
>Or how do you determine if there will be compatibility issues?
>Or do you not care as long as it is 63/37, or 62/36/2?
>Does this become more critical with Pb free?
>Do you have any difficulty getting different solder manufacturers to agree
>to compatibility to one wire solder brand?
>Or do you just use different wire solder based on who populated the board?
>
>Thanks.
>
>Genny Gibbard
>
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Thank-you

Mumtaz

  D/ 8165 - SMT Process Quality
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