Hi All, You also need to remember, that IPC-A-610 speaks only to quality, NOT reliability. Reliability, comes from the presence of both quality and proper Design-for-Reliability as per IPC-D-279. True, a lot of products get by on serendipity, but do not count on it. Also, there is at least one instance where following Class 3 yields a less reliabile product than the looser class 2 requirements. 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 -----------------------------------------------------