Hi All: Does anyone have the same experience for the thermal shock test, in IPC-TM-650 section 2.6.7.2B, there are 6 kinds of test conditions for different BASE MATERIAL TYPE, such as the material of IPC 4101B/20, the test condition should be condition C, but now what I have for a new base material type is EMC-285, the type is IPC 4101B/101, which is not mentioned in this section, so does anyone know what kind of test condition should be used for this kind of material? Condition c or condition and F and why? Thanks! Winning --------------------------------------------------- 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 -----------------------------------------------------