UNE-EN IEC 61249-2-45
Materials for printed boards and other interconnecting structures - Part 2-45: Reinforced base materials clad and unclad - Non-halogenated epoxide non-woven/woven E-glass reinforced laminate sheets of thermal conductivity (1.0W/m·K) and defined flammability (vertical burning test), copper-clad for lead-free assembly (Endorsed by Asociación Española de Normalización in May of 2018.)