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IEC 61249-3-6:2026 ED1

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 IEC 61249-3-6:2026 ED1

Publication date:   May 19, 2026

General information

60.60   Standard published   May 19, 2026

IEC

TC 91

International Standard

31.180   Printed circuits and boards

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Scope

IEC 61249-3-6:2026 specifies requirements for properties of polytetrafluoroethylene (PTFE) filled unreinforced laminated sheet of a thickness 0,02 mm up to 3,2 mm, of defined flammability (vertical burning test), copper-clad.
This document is applicable to the design, manufacture, use of PTFE filled unreinforced laminated sheet of defined flammability (vertical burning test), copper-clad.
Its flame resistance is defined in terms of the flammability requirements of 8.3.

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IEC 61249-3-6:2026 ED1
60.60 Standard published
May 19, 2026




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