Hello Steve Holen, The bad solder joint reliability with TSOP and Alloy 42 leadframes is indeed an issue. It also seems difficult to have an influence on the vendors to change lead frame material to copper. We have to use what we get!? Have you looked at other solutions to improve solder joint reliability (with Alloy 42 leadframes) but still using the standard FR4 material/build ups? (tough solder, epoxi dispensing of the leads, underfill, pkg encapsulation). Hans Bogren PBA technologies Ericsson Telecom AB Sweden *************************************************************************** * TechNet mail list is provided as a service by IPC using SmartList v3.05 * *************************************************************************** * To unsubscribe from this list at any time, send a message to: * * [log in to unmask] with <subject: unsubscribe> and no text. * ***************************************************************************