Hi Doug,
My experience with this is that most reputable PCB vendors are true to
their word. The liability involved in falsely stating compliance is just
too great. The other thing is to select PCB vendors that are listed with an
agency (UL,CSA, etc.). The PCB vendor has to put their name or logo on the
PCB as well as the flame rating. Copies of these logos used to be in the UL
yellow book. If you have a PCB marked as V-0 and there is no manufacturers
marking on the board, I would be suspicious. To satisfy yourself, you can
send samples of the PCB to a testing lab (UL, CSA, etc), and for a suitably
exhorbitant fee they will do the tests for you. The other alternative is to
get the vendor to provide you with a test report from the agency
Regards
Doug Beckwith
Mitel Networks
"POWELL, DOUG"
<[email protected]> To: "EMC-PSTC (E-mail)"
<[email protected]>
Sent by: cc:
owner-emc-pstc@majordom Subject: PCB marked for
UL 94V-0
o.ieee.org
06/19/03 12:47 PM
Please respond to
"POWELL, DOUG"
Hello group,
An interesting question came up about validating printed circuit board raw
material. In searching for alternate vendors we provide a spec that V-0
material is required and a UL V-0 stamp be placed on the board.
The question is, how do I independently validate the material used, since
a vendor could theoretically choose whatever they want and stamp it as
V-0?
-doug
Douglas E. Powell
Regulatory Compliance Engineer
Advanced Energy Industries, Inc.
Fort Collins, CO 80535 USA
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