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


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