James sounds to me like a boiler plate set of fab notes that the PCB
designer & EE did not review correctly.
Ask them?
-----Original Message-----
From: DesignerCouncil [mailto:[log in to unmask]]On Behalf Of James
Jackson
Sent: Thursday, February 08, 2007 2:14 PM
To: [log in to unmask]
Subject: Re: [DC] Contradictory Fab Notes?
Well... I don't think that anyone noticed this before. (I only did after
reading line by line... slooooowly.)
Anyway - we just got one company to toss it back to us - saying that they
cannot do ENIG. (That should've been my first clue something was amiss.)
This is the only board in the 'box' that has this ENIG finish specified.
Another thing that should've been a 'red flag'.
We _will_ go back to the client and ask for clarification... they're just a
bit slow in getting back to us, is all.
I'll tell ya this. They've had us scrambling around here the last few
days...
*sigh*
Thanks for yall's input on this.
Regards,
James Jackson
Quoting mattyk <[log in to unmask]>:
> Just me, but why not go back to the client and verify?
>
> -----Original Message-----
> From: DesignerCouncil [mailto:[log in to unmask]] On Behalf Of James
> Jackson
> Sent: Thursday, February 08, 2007 2:53 PM
> To: [log in to unmask]
> Subject: [DC] Contradictory Fab Notes?
>
> Okay folks,
>
> We have a client that we have contracted to fabricate a PCB for.
>
> They finally produced a Fab Drawing, and in the Notes, they have the
> following...
>
> 3.2 Board Material to comply with IPC 4101/21,
> FR4 Material. Copper Clad both sides, 1Oz
> Copper, 0.062 Thk, ENIG Plating finish.
>
> ...
>
> 3.9 Electro Solder Plate entire copper surfaces,
> .0003 minimum thickness and reflow solder
> (Infrared Fusing Preferred).
>
> ....
>
> Now... to my way of thinking, they have specified the PCB finish twice.
> In 3.2, they are wanting a gold finish (Electroless Nickel Immersion
> Gold).
> In 3.9, they are wanting a solder-plated finish.
>
>
> Or, am I mis-reading this?
>
> (I have left out the other notes 3.1, and 3.3 - 3.8, as they do not apply
> to
> this.)
>
> Could someone more knowledgeable set me straight?
>
> Regards,
>
> James Jackson
> Oztronics
>
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