Hi Ramon,

We use your proposed method for a lot of things like hardware and some components but in the case of solder it's a little different. We don't want our circuit card assembly houses to use any thing but SN63. I we made SN60 an "every time sub" for SN63 it would not only be for magnetics but for our board assemblies too.

I'd really like to pull SN63 off the parts list and control it with some sort of solderability note.

Thanks,

KennyB

-----Reply Message-----
From: TechNet [mailto:[log in to unmask]]On Behalf Of Dehoyos, Ramon

        Hi Kenny:
        Agree, you should give yourself some wiggle room. An alternate part list drawing will also work. This drawing will affect all drawing. So every time you want to add a part to the drawings all you have to do is add it to the alternate part list. The drawing should have a table of components with two or more columns. On the left the alternate part and on the right of it the parts it is replacing.
        Regards,
        Ramon

-----Original Message-----
>>> [log in to unmask] 08/02/04 11:36AM >>>
I have a question on defining a lead finish on magnetics made by CM's.

On our magnetics design drawings we currently call out SN63 for a lead
finish but we have a contractor that wants to us SN60. We don't have a
problem using SN60 but we'll have to change all our drawings to accept
it. When we change to Lead Free solder in the future we'll have to
change all our drawings again.

I'm wondering if there is a better way to call out a lead finish i.e.
"Lead finish shall be solderable" or something simple like that. Or
maybe there is a spec I can call out.

What do others of you do for specifying lead finish on internally
designed components that are manufactured by a CM?

Thanks to all,

KennyB

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