Tony, I have two types of daisy chain coupons for testing. The coupons are used for testing CAF,ICDs and registration. We thermal cycle these coupons per IPC-TM-650 number 2.4.13.1 up to 12 times. We then inspect the coupons for Laminate degradation and ICDs. Our customer uses these coupons for CAF testing and thermal cycles them up to 16 times. If you contact me off line I could email you the DXF file of the daisy chain coupon and provide more detail to the test methods of these coupons. Best Regards, Sean Hill Engineering Manager TechniTron Inc. 650-962-0770 ext.150 [log in to unmask] -----Original Message----- From: Tony Steinke [mailto:[log in to unmask]] Sent: Wednesday, January 07, 2004 8:23 AM To: [log in to unmask] Subject: [TN] thermal cycle coupons Does any one have knowledge of or can point me in the right direction for the requirement of making daisy chain coupons for determination of coupon failure vs. number of thermal cycles. We are wanting to update our current material suppliers(and current process) to determine number of thermal cycles before we have failures. Is there something in IPC which states this. Tony Steinke --------------------------------------------------- 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 847-509-9700 ext.5315 ----------------------------------------------------- AIT-Atlanta Inc. --------------------------------------------------- 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 847-509-9700 ext.5315 -----------------------------------------------------