UNE-EN IEC 61249-3-6:2026

Materials for circuit boards and other interconnecting structures - Part 3-6: Sectional specification set for unreinforced base materials clad and unclad - Polytetrafluoroethylene (PTFE) filled laminate sheets of defined flammability (vertical burning test), copper-clad (Endorsed by Asociación Espanola de Normalización in August of 2026.)