Way back when we were making changes to meet RoHS requirements, we were advised to use bare board materials with 170 Tg or higher. So we changed our Fabrication Drawing Notes and everything has been fine. But recently I've noticed that the default material for several different suppliers is around 155 Tg. Has the thinking "relaxed" in this regard? Or should I stick with my 170 ? Jack ______________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________