Alejandro, what paste alloy are you using? Steve G. can attest to the fact that 2% silver can improve this phenomena greatly. We have reduced if not eliminated the same problem here by using 2% Ag. Jason Gregory Production Supervisor LaBarge Inc. (918)459-2367 [log in to unmask] Becerra Alejandro <[log in to unmask]> on 12/02/2002 07:23:52 PM Please respond to "TechNet E-Mail Forum." <[log in to unmask]>; Please respond to Becerra Alejandro <[log in to unmask]> To: [log in to unmask] cc: (bcc: Jason Gregory/LABARGE) Subject: [TN] Tombstoning Film Chip Capacitor Hello to All, We have had tombstoning in a Film Chip Capacitor (Size 1206). It is being soldered in a normal reflow process, and this is the only component that it is showing tombstoning. Reviewing the specs. of the component in the web I found that this capacitor is recommended for Wave Soldering. Does anyone know the difference in construction between the Capacitors for Reflow and Wave Soldering? Is it possible that this be cause for the tombstoning? I am also sending pictures for cross section for the capacitors that we are using (Recommended for Wave Soldering). They could be seen at Steve's site. Regards Alejandro Becerra --------------------------------------------------- Technet Mail List provided as a free 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/html/forum.htm for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ----------------------------------------------------- --------------------------------------------------- Technet Mail List provided as a free 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/html/forum.htm for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 -----------------------------------------------------