In a former life (Commercial Avionics/Military Avionics) we tried using LCCC's with miserable results. We used them on FR4 and Teflon PCB's. After only several hundred temperature cycles (-55C to 85C @ < 5C/min), the solder joints would crack. We stopped using them as fast as we could get new parts spec'ed and PCB's relayed out for compliant pin packages. Brent Reliability/Quality Engineer >>> [log in to unmask] 07/20/00 11:35AM >>> Greetings, Is anybody out there using leadless ceramic chip carriers in a military environment without attaching leads? If so, what size are you using? Thanks in advance for any information, Bill Robinson ############################################################## TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c ############################################################## To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: To subscribe: SUBSCRIBE TECHNET <your full name> To unsubscribe: SIGNOFF TECHNET ############################################################## Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information. If you need assistance - contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ##############################################################