Hi All! Dave Hillman so kindly sent me a picture of some LCCC solder joints after thermal cycling after 500 thermal cycles of -55C to +125C (per IPC-9701 guidelines). Needless to say it has failed! (CAUTION! Parental discretion is advised before viewing!) Go to: _http://www.stevezeva.homestead.com_ (http://www.stevezeva.homestead.com) Look at: "LCCC after thermal cycling" I build assemblies using LCCC's here, 32-pins or lower...mostly radar stuff...been putting them on assemblies for as long as I've been here. Don't know exactly why our customer still uses them, maybe that's the only package they can get the devices in...and maybe the smaller packages don't have the same CTE mismatch problems. There is a company that makes compliant SMT leads that can be attached to LCCC components, and I think that they have a service that will do that for you. It's Interplex NAS, go to: _http://www.interplexnas.com/index.asp_ (http://www.interplexnas.com/index.asp) If you absolutely have to use LCCC's, and they're bigger than 32-pins, you might check them out. -Steve Gregory- --------------------------------------------------- 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 -----------------------------------------------------