IPC-RB-276 has a chart defining minimum standard plating thickness. for Gold the requirements are: Class 1 0.00075mm(0.00003in) general use PCBs Class 2 0.00075mm(0.00003in) high reliability PCBs Class 3 0.0013mm (0.00005in) mission critical PCBs I hope this helps. Jeffrey McGlaughlin BFGoodrich Avionic Systems Columbus Ohio >>> starr devere <[log in to unmask]> 06/06/97 01:34pm >>> Is there an IPC spec for minimum thickness of gold plating on edge tabs for high reliability boards? I was thinking it was 30 microinches but I'm looking for a spec. Thanks *************************************************************************** * 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] * ***************************************************************************