Hi ya'll! Here's something weird I've never come across, but maybe some of you have. We built this Hi-Rel board here that the PCB drawing calls out for 2-ounce copper. The board has this leaded SMT multi-capacitor part (it's like 3 huge ceramic capacitors stacked on top of each other) and has 8-leads. After assembly, and before we test then conformal coat it, we put the assembly on this vibration table to go through some ESS. There's been a few of these capacitor deals come loose because they're so top heavy, but that's a whole 'nuther issue... What we've been seeing on some of these boards, is that either the pad completely lets go from the laminate (it's a polyimide), or sometimes we'll see the pad come up in what looks like a layer of copper, yet there's still copper down on the PCB...as if the copper has split horizontally in two distinct layers? Is this possible? Does 2-ounce copper clad laminate get the copper plated an ounce at a time? Is this a defect? I've never seen something like this before, and I can take a picture and send it to ya' if you want me to.... Thanks! -Steve Gregory- ############################################################## TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c ############################################################## To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: To subscribe: SUBSCRIBE TECHNET <your full name> To unsubscribe: SIGNOFF TECHNET ############################################################## Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information. If you need assistance - contact Gayatri Sardeshpande at [log in to unmask] or 847-509-9700 ext.5365 ##############################################################