Rich, Saw something similar on a small SMT board that was scored with break-off pieces. Actually, the board went through the process in an array, something like six up, with the break-off boarder. Flexing the board to remove that boarder caused damage to a surface mount resistor pot...peeled the metalization right off the body of the component. Board was pretty thin though, on the order of 30 mils. Glenn > -----Original Message----- > From: Rich Lasko [SMTP:[log in to unmask]] > Sent: Wednesday, April 18, 2001 6:41 AM > To: [log in to unmask] > Subject: [TN] Shipping Damage on SMT components > > Good morning everyone! > > I am currently investigating a customer return due to suspected shipping > damage. Two components in particular have been damaged. One component is > a > SMT bridge rectifier (DF06S) on the primary side of the assembly. This > side > uses solder paste and is reflowed. The other component is a SMT diode > (DL4007) on the secondary side of the assembly. This side is glued and > wave > soldered. The returned assemblies have either one or the other of the > above > components "torn" or "partially torn" from the pcb. Torn includes the > component, component pad, and attached trace(s) that have been dislodged > from the pcb. Both components are located near the edge of the pcb. It > would appear that this type of damage would take quite a bit of force to > dislodge a low profile SMT component from the pcb with the pads and traces > attached. The shipping boxes nor static shielding bags appear to have > been > "excessively" damaged. (No apparent holes, punctures, etc...). Each > assembly is bagged separately in a static shielding bag and packaged in > individual "slots" in the shipping box. The board size is approx. 4" x > 4". > > My questions are these: > > 1.) Has anyone else experienced this type of damage to low profile SMT > components? If so, what was the cause and resolution? > 2.) Does anyone have an idea on how much force would be needed to > dislodged > these type components from the pcb? > > > > Please advise. > > Thanks in advance for your responses. > > Rich Lasko > Badger Electronics --------------------------------------------------------------------------------- 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 ---------------------------------------------------------------------------------