Dear Technet: I've been tasked by my superiors to query industry to find out what other electronic assemblers are yielding off of their surface mount line. To compare apples to apples, here are my specifics: We assemble SMT for military/high rel. The majority of the parts are ceramic leadless chip carriers (LCCs) and ceramic chip components (resistors, caps, diodes). We're starting to track solder defects more closely when the assemblies come right off the line, and we don't like what we see. The major anomaly is insufficient solder fillet on the LCCs. (There could be one joint insufficient out of 20. By the way, solder paste deposits are perfect!) Whether or not these are actually defects is under discussion. What I'd like to know is: 1) What kind of defect rates (PPM) are others, building similar assemblies, getting from their SMT lines. 2) Does anyone experience insufficient solder on LCCs? Thanks, Jim M. AIL Systems Inc. 631-595-5879 ############################################################## 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 ##############################################################