Thanks, Werner. I forgot to mention that. When profiling a pwb to optimize the preheat and wave profile, refer to IPC 7350 for mounting the TCs, as well. The method for attachment of the TC is absolutely critical. For the bottom side, a completely different reading will be measured if the TC is not attached to a metal pad or ground plane, than if measuring the pot temp only (unattached to a foil). -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Werner Engelmaier Sent: Wednesday, December 20, 2006 1:24 PM To: [log in to unmask] Subject: Re: [TN] Wave soldering profiling Hi Dominic, First let me recommend IPC-7530 Guidelines for Temperature Profiling for Mass Soldering Processes (Reflow & Wave). Second, depending on your purpose, if it is for soldering I would suggest the top of the PTH but in intimate contact, but also on one lead of the largest leaded component as well as the center-most solder ball of the largest BGA. Werner --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 1.8e 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 1.8e 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 -----------------------------------------------------