Conversely, some customers do not want to accept a higher amount of
X-outs or percentage/panel of X-outs, nor will they accept a cost based
on the number allowed.
This is because a large number of X-outs indicates quality issues in the
fabrication process that may go undetected in the boards that do get
shipped. On certain PWBs that have more difficulty in manufacturing
(impedance requirements, size, complexity, layer count, etc.) a slightly
higher number of X-outs may be reasonably negotiated, but for PWBs that
are considered "standard" the expectation would be very few X-outs.
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Sherif Refaat
Sent: Friday, March 02, 2007 9:24 AM
To: [log in to unmask]
Subject: Re: [TN] Number of allowed X-outs?
Rick;
Normally, the customer not the supplier is the one who decides on X-out
acceptance and on accepted % of X-out. This is based on how easy is it
to program the pick and place machines to skip the Xed-out board(s).
Most customers would request Xed-out panels to be packed and identified
separately. Some would specify the way of identifying the rejected
boards.
If it was up to the PCB suppliers, they would like that as much as
possible of X-outs are accepted by the customer regardless of % of
panels and % of boards on the panel. PCB suppliers would,
understandably, give better prices if the customer accepts X-outs.
Sherif Refaat.
Technology Roadmap Consultants Inc.
----- Original Message -----
From: "Rick Thompson" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Tuesday, February 27, 2007 4:15 PM
Subject: [TN] Number of allowed X-outs?
I was interested in getting opinions on acceptance of X-outs from PCB
suppliers. Could anyone share what their criteria is for allowing
X-outs in panels? % of panels, % of boards in a panel?
Thanks in advance for your insights.
Rick Thompson
Engineering Manager
CTS Electronics Manufacturing Solutions
+1 (805) 222-1200 main
+1 (805) 222-1275 direct
[log in to unmask]
www.ctscorp.com/ems
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