Dear Technetters We have some printed circuit boards with gold over nickel coating which are experiencing solderability problems, ie very poor wetting. I have heard that this may be due to nickel migration through the gold over time. The boards are approximately 6 Months old. Is there a particular shelf life for this type of coating before we need to dump the boards?. Regards Zoran Raich Process Engineer NetComm (Aus) Ltd (+612) 9878 7394 [log in to unmask] *************************************************************************** * TechNet mail list is provided as a service by IPC using SmartList v3.05 * *************************************************************************** * To subscribe/unsubscribe send a message <to: [log in to unmask]> * * with <subject: subscribe/unsubscribe> and no text in the body. * *************************************************************************** * If you are having a problem with the IPC TechNet forum please contact * * Dmitriy Sklyar at 847-509-9700 ext. 311 or email at [log in to unmask] * ***************************************************************************