Rich, I have found the damage you are describing occurs during handling, not shipping. If you are using wire racks or verticle board transports, these are usually where board edge components get whacked and the damage is ripped off pads and missing components. Sliding instead of lifting is the normal culprit. I'd check your process to see what type of board transport is being used and then hold a little training session for the operators so they are aware of what the problem is and how it happens. DT -----Original Message----- From: Rich Lasko [mailto:[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 ---------------------------------------------------------------------------- -----