IPC-TM-650 check for outgas (test method) abcd -----Original Message----- From: TechNet [mailto:[log in to unmask]]On Behalf Of Upton, Shawn Sent: Friday, March 23, 2007 9:11 AM To: [log in to unmask] Subject: [TN] PCB Temp Guidelines Had a recent question about using a PCB at 105C; I wasn't sure about it. I usually spec FR4 for HASL finish, FR4 with Td_min=350C/CTE_max=3.5% for immersion gold finish; and haven't done high temp (150C or more) yet. I figured, the board in question was RoHS compliant, so it shouldn't outgas too quickly at 105C, at least not for brief testing -- but I wasn't sure about prolonged periods. So, the question is, what is regular FR-4 recommended up to for temperature? Shawn Upton, KB1CKT Test Engineer Allegro MicroSystems, Inc [log in to unmask] 603.626.2429/fax: 603.641.5336 --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 15.0 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 or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 ----------------------------------------------------- --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 15.0 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 or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 -----------------------------------------------------