Message-ID: <[log in to unmask]>
Date: Mon, 16 Dec 1996 08:45:22 -0800
From: Steve Collins <[log in to unmask]>
Reply-To: [log in to unmask]
Organization: TSX Corporation
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To:
"RwF - ext. 355 - Pat Bailey" <[log in to unmask]>
Subject: Re: X-outs On Multiple Board Arrays
References: <[log in to unmask]>
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RwF - ext. 355 - Pat Bailey wrote:
>=20
> I was wondering what policies others have regarding accepting x-outs on
> multiple board arrays. We currently allow 50%, with the intent being w=
e
> would use a two up array with one x-out, but don't want to see 10 x-out=
s on
> a 20 up array. We are contemplating going to something different, say =
5%
> or 1, whichever is greater. Or possibly no x-outs, but I'm concerned a=
bout
> the cost ramifications of this (cost is a function of yield, right?). =
I
> would appreciate any input from both fabricators and assemblers.
>=20
> Regards,
>=20
> Pat Bailey
> Zytec Corporation
Below is an excerpt from our General PCB Requirement Specification on
this subject:
15.0 X-OUT POLICY:
15.1 Each Panel not to contain in excess of 25% X=92d-Out boards.
15.2 Each X-Out board to be marked in a manner so that Pick & Place
equipment will not attempt to insert those boards X=92d-Out such as
fiducial reference hole for panelization blocked.
15.3 Panels that include X-Outs shall be segregated from non X-Outs
if included with a normal shipment.
15.4 Panels with different X-Out schemes shall be sorted into
groups, each group of different X-Out patterns to be identified..
Hope this helps.
Steve Collins
PCB Design Supervisor
TSX Corporation
El Paso, TX
Ph: (800) 351-2345
Fax: (915) 543-4898
email: [log in to unmask]
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