Reality sucks!
Dewey

-----Original Message-----
From: Leadfree [mailto:[log in to unmask]] On Behalf Of Pete Houwen
Sent: Wednesday, March 19, 2008 6:49 AM
To: [log in to unmask]
Subject: [LF] x-ray and SPI frequency?

I just got back from another trip to our (captive) PCB plant, and before
I vent 
more frustrations, I need to ask if I'm off base.

As part of our switch to the more difficult lead free at the same time
we 
started BGAs and moved to a new facility in a new country, we purchased
x-
ray and solder paste inspections systems.  After asking about the
gathering 
dust on them, I was told the SPI was used on a 1 panel/hour sample for
each 
of 2 lines, the x-ray is used only on failed boards suspected of a BGA
problem.

I'm not a process engineer, don't even play one on the internet, but
this 
doesn't seem normal to me.   We still aren't getting good yields, I
think these 
tools should be more utilized.  I don't want to press the issue without
a better 
idea of normal use.

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-------------------------------------------------------------------------------Leadfee Mail List provided as a service by IPC using LISTSERV 1.8d
To unsubscribe, send a message to [log in to unmask] with following text in
the BODY (NOT the subject field): SIGNOFF Leadfree
To temporarily stop/(start) delivery of Leadree for vacation breaks send: SET Leadfree NOMAIL/(MAIL)
Search previous postings at: http://listserv.ipc.org/archives
Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815
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