Following up on the flying probe issue,
I was told of a non-contact flying probe (?) method in which a high
frequency signal transmission and/or trace capacitance is used to determine
connectivity (gross opens and shorts at least). I have not been able to
find any US vendors and only one vendor in Japan which makes technical
evaluation difficult. I was particularly interested in this approach
because it might be able to test circuits which are electrically bussed
together for plating.
Thanks for any suggestions.
Paul Klasek <[log in to unmask]> on 07/29/99 05:10:50 PM
Please respond to "TechNet E-Mail Forum." <[log in to unmask]>; Please respond
to Paul Klasek <[log in to unmask]>
To: [log in to unmask]
cc: (bcc: John C. Schultz/US-Corporate/3M/US)
Subject: Re: [TN] Flex-circuit electrical testing...
Sounds like a job for flying probes to me ;
and considering the change state of contract environment it could be a good
investment as well Steve .
If you put your trusty dog through SMI or Nepcon proceedings ; there are
loads to pick from .
See yo' paul
-----Original Message-----
From: Stephen R. Gregory [mailto:[log in to unmask]]
Sent: Thursday, 29 July 1999 23:43
To: [log in to unmask]
Subject: [TN] Flex-circuit electrical testing...
Hi again!
Boy, I'm just full of questions today huh?!We got a job we're bidding on
for
some Flex-circuits...at pretty good volumes. The volume will dictate the
need
for additional capital equipment. So I've been asked to come-up with a
S.W.A.G. on how much money it will take to support this project.
The printers, pick and place, reflow, and stuff like that I can deal with,
but according to the drawings on the assemblies that I have (there's
14-different part numbers) they want them electrically tested. Nothing
complicated, stuff like opens, shorts, overvoltage, undervoltage, diode
polarity, as well as being tested for values on certain components like
thermistors, resistors, and whatnot.
I've built some flex before, but I have not a clue how and with what kind
of
equipment they are tested with. These circuits are going to be in 12" X 18"
panels. Do they have to be singulated to be tested? Can someone just give
me
a real rough idea of what kind of equipment and the cost to do those kind
of
tests? Sorry 'bout being so dumb about stuff like this...
We're talking yearly volumes of over 1,000,000 unit in many of the part
numbers by the way...fun stuff huh?
As always, forever in ya'lls debt...
-Steve Gregory-
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