Barry,
UL94 is interesting and was written as a test for plastic materials.
More to the point, IPC-4101, "Specification for Base Materials for
Rigid and Multilayer Printed Boards" addresses flammability in paragraph
3.10.2.1.
This mandates testing to IPC-TM-650, Method 2.3.10.
Here, the maximum average and individual burn times are mandated to be as
indicated on the applicable specification sheet.
Hope this helps.
Mike Simms
Trace Laboratories - Central
ph.  847 934 5300
fax  847 934 4600


-----Original Message-----
From: McGlaughlin, Jeffrey A [mailto:[log in to unmask]]
Sent: Thursday, October 11, 2001 10:10 AM
Subject: Re: PCB FLAME RATINGS


The 94V indicates the test methodology, the -0  will not sustain a flame
(zero minutes to self-extinguish), the -1 self-extinguishes in less than 1
minute...

Jeffrey A. McGlaughlin CID
Sr. Designer
Battelle Memorial Institute
Columbus Ohio
[log in to unmask]

-----Original Message-----
From: Barry Gallegos [mailto:[log in to unmask]]
Sent: Thursday, October 11, 2001 10:33 AM
To: [log in to unmask]
Subject: [TN] PCB FLAME RATINGS


Good morning Tech Net.

I have a question in regards to UL Flame ratings for PCB's.  My incoming
inspectors have asked me what the difference is between 94V-0 and 94V-1.

any help is appreciated.

Thank you in advance.

Barry Gallegos
Process Engineer
Western Electronics
1550 South Tech Lane
Meridian, Idaho 83642
Phone: 208/955-9771
Fax: 208/955-9755

----------------------------------------------------------------------------
-----
Technet Mail List provided as a free 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 Technet
To temporarily halt delivery of Technet send the following message: SET
Technet NOMAIL
Search previous postings at: www.ipc.org > On-Line Resources & Databases >
E-mail Archives
Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional
information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700
ext.5315
----------------------------------------------------------------------------
-----

---------------------------------------------------------------------------------
Technet Mail List provided as a free 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 Technet
To temporarily halt delivery of Technet send the following message: SET Technet NOMAIL
Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail Archives
Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional
information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315
---------------------------------------------------------------------------------