BS 09/30210900 DC BS EN 61249-2-40. Materials for printed boards and other interconnecting structures. Part 2-40. Reinforced base materials clad and unclad. High Performance, modified, non-halogenated epoxide woven E-glass laminated sheets of defined flammability (vertical burning test), copper-clad for lead-free ass

standard by BSI Group, 10/08/2009