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IEC
IEC 61249-4-1:2008
En Vigor
2008-01-30
Materials for printed boards and other interconnecting structures - Part
4-1: Sectional specification set for prepreg materials, unclad (for the
manufacture of multilayer boards) - Epoxide woven E-glass prepreg of
defined flammability
IEC
IEC 60317-31:2015
En Vigor
2015-10-22
Specifications for particular types of winding wires - Part 31: Glass
fibre wound, resin or varnish impregnated, bare or enamelled rectangular
copper wire, temperature index 180
ISO
ISO/IEC 9995-4:2025
En Vigor
2025-11-19
Information technology — Keyboard layouts for text and office systems —
Part 4: Numeric section
IEC
IEC TR 63020:2016
En Vigor
2016-05-12
Digital sheet music - Market, use cases, and related technologies
