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 ---------------------------------------------------------------------------- ----- 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 ---------------------------------------------------------------------------------