Andre, Based upon 500v at 6mA with 0.1 spacing I would want to look for alternatives. What happens if the boards are well cleaned? Do you still see failures? Are you locked into that capacitor? We have applications where we cut a slot between the component pins, then we reduce the potential for surface tracking or creepage. Phil -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Andre Leclair Sent: Wednesday, April 05, 2006 2:12 PM To: [log in to unmask] Subject: [TN] Arching or Current Leakage We have a customer that has a portion of a circuit which randomly fails. The circuit is a backlight driver (500volt 6mA). The output caps are 0.100 spacing of the terminals. The process used is No-clean. Can the No-clean contribute to failures of the circuit (ie promote arching or current leakage across the body of the output caps). ??? --------------------------------------------------- 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 ----------------------------------------------------- --------------------------------------------------- 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 -----------------------------------------------------