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October 2001

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Subject:
From:
"Simms, Michael" <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Thu, 11 Oct 2001 11:22:04 -0500
Content-Type:
text/plain
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text/plain (83 lines)
Hi Barry,
The difference between UL94 (July 29, 1997) classs are listed below.
1.  Afterflame time for each individual sample t1 or t2
  V-0 <=10s. ;  V-1  <= 30s.  ; V-2  <= 30s.
2. Total afterflame time time for any condition set (t1 plus t2
for the 5 specimens.
  V-0 <=50S. ;  V-1 <= 250S.  ; v-2  <= 250s.
3. Afterflame or afterglow of any sample up to the holding clamp.
  V-0, V-1, and V-2 Not allowed
4. Cotton indicator ignited by flaming particles or drops
  V-0 and V-1 Not allowed; V-2 Allowed

Like many independent labs out there, we do this type of testing
quite a bit.

Regards,
Mike Simms
Trace Laboratories - Central
ph.  847 934 5300
fax  847 934 4600


-----Original Message-----
From: Gary McCauley [mailto:[log in to unmask]]
Sent: Thursday, October 11, 2001 10:08 AM
Subject: Re: PCB FLAME RATINGS


I believe that it is the time that it takes the material to
extinguish once the flame has been removed.
immediately vs 1 sec?

gary mccauley

-----Original Message-----
From: Barry Gallegos [mailto:[log in to unmask]]
Sent: Thursday, October 11, 2001 9:33 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

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