Hi - I'm a PWB designer and I need to convince some engineers I work with that we do not need to specify brand names of the FR-4 board material. They feel that since they tested the physical properties of a certain brand of FR-4 that we need to call that brand out in the FAB drawing note. In one case the company is no longer in business. I maintain that we will be safe and more flexible if we call out "Epoxy-Glass Laminate FR-4..." Is FR-4 made to some industry standard? If so how can I get a copy of this standard so I can prove my point once and for all? -thanks Thomas Cates Intermec - Amtech Systems Division