Plain old FR4? Got a reflow profile? Cooling zone to high? Things that make you go Hummmm. Guy Ramsey American Competitiveness Institute Senior Lab Technician / Instructor 610 362-1200 ext 107 -----Original Message----- From: TechNet [mailto:[log in to unmask]]On Behalf Of Nicolas Ortiz Sent: Monday, March 12, 2001 12:11 PM To: [log in to unmask] Subject: [TN] Cracked Capacitor 1812 I have a question for all you technetters. We are experiencing cracking on certain 1812 ceramic capacitor. The cap cracks on the joint between the ceramic and the end termination. We already checked our process, following the vendor's recommendation, and still have between 1-2% cracked just after the second pass oven. The component is placed in the first pass of a double sided reflow (no wave solder). Does anybody experienced a situation like this? ---------------------------------------------------------------------------- ----- Technet Mail List provided as a free service by IPC using LISTSERV 1.8d 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 delivery of Technet send the following message: SET Technet NOMAIL Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail 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 1.8d 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 delivery of Technet send the following message: SET Technet NOMAIL Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail 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 ---------------------------------------------------------------------------------