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Date: Mon, 16 Dec 1996 08:45:22 -0800
From: Steve Collins <<a href="/scripts/wa.exe?LOGON=A3%3Dind96%26L%3DTECHNET%26E%3D0%26P%3D16828330%26B%3D--%26T%3Dtext%2Fplain%3B%2520charset%3D%26pending%3D" target="_parent" >[log in to unmask]</a>>
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Organization: TSX Corporation
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To: 
	"RwF - ext. 355 - Pat Bailey" <<a href="/scripts/wa.exe?LOGON=A3%3Dind96%26L%3DTECHNET%26E%3D0%26P%3D16828330%26B%3D--%26T%3Dtext%2Fplain%3B%2520charset%3D%26pending%3D" target="_parent" >[log in to unmask]</a>>
Subject: Re: X-outs On Multiple Board Arrays
References: <<a href="/scripts/wa.exe?LOGON=A3%3Dind96%26L%3DTECHNET%26E%3D0%26P%3D16828330%26B%3D--%26T%3Dtext%2Fplain%3B%2520charset%3D%26pending%3D" target="_parent" >[log in to unmask]</a>>
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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: <a href="/scripts/wa.exe?LOGON=A3%3Dind96%26L%3DTECHNET%26E%3D0%26P%3D16828330%26B%3D--%26T%3Dtext%2Fplain%3B%2520charset%3D%26pending%3D" target="_parent" >[log in to unmask]</a>

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