Hi Dorothy, we had the same problem with 0603 coil wound inductors a few years ago, and like you tried altering the pick parameters to no avail. Our conclusion was that static charge was being generated on the cover tape which lifted the parts slightly as the tape was being peeled away. The top heavy / unstable design of the parts resulted in the part then tipping itself on it's side. Like you we changed to paper tape and the problems went away. It's amazing how the component suppliers get away with introducing problems like this and then imply that you are the only customer who has ever had problems. Regards, Chris Murphy, Production Enigneering, Tait Electronics Dorothy Lush wrote: > It happens more frequently when the feeder is "bad". My guys on the floor would > replace it and then it would stop or happen moe infrequently. I had a large > problem with 0603 coil wound inductors being placed sideways, upside down or > propelled into outer space sometimes with a 10-30% loss of part. It turned out > that no mater what you did (slow the placement, change the feeder, adjust the > vision system), if the carrier was plastic you were doomed. Solution: change to > paper carrier. I wonder if the same is true for resisters and plastic carriers. > Static electricity, pocket wall not straight up and down enough?Dorothy Lush > > -----Original Message----- > From: TechNet [mailto:[log in to unmask]]On Behalf Of Howard > Watson > Sent: Thursday, May 22, 2003 2:38 PM > To: [log in to unmask] > Subject: [TN] Sideways Resistors > > > > Technetters, > > I'm not sure if others see this situation, but it's a somewhat rare > occurrence when we see some resistors, like 0805's, soldered on their > sides. Though it's not a defect per the conditions of IPC-A-610, I am > still curious as to the root cause. I don't know if they somehow get > placed on their side or if they get pulled up that way during > soldering. Our P&P machine is a Mydata MY15, we use no-clean with > reflow in air, HASL boards, 6 mil stencil w/ homeplate apertures. > > Any thoughts? > > Howard Watson > SMT Manufacturing Engineer > --------------------------------------------------- > 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 > ----------------------------------------------------- > AMETEK/Dixson > > --------------------------------------------------- > 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 -----------------------------------------------------