OEVE/OENORM EN 61249-2-32
Materials for printed boards and other interconnecting structures - Part 2-32: Reinforced base materials clad and unclad for high frequency application - Halogenated modified or unmodified resin system, woven E-glass laminated sheets of defined relative permittivity (equal or less than 3,7 at 1 GHz) and flammability (vertical burning test), copper-clad (IEC 91/673/CDV)