Fibre optic interconnecting devices and passive components - Interface standard for fibre management systems - Part 1: General and guidance (IEC 61756-1:2019); German version EN IEC 61756-1:2020
Edition 2021-09

Connector sets and interconnect components to be used in optical fibre communication systems - Product specifications - Part 4-2: Type SC/APC simplex 8° terminated on IEC 60793-2-50 of types B1.1 and B1.3 singlemode fibre, with full zirconia ferrule category U; German version EN 50377-4-2:2011
Edition 2011-10

Piezoelectric filters; part 2: guide to the use of piezoelectric filters; section 1: quartz crystal filters; identical with IEC 60368-2-1:1988
Edition 1993-07

Liquid crystal and solid-state display devices - Part 5: Environmental, endurance and mechanical test methods (IEC 61747-5:1998); German version EN 61747-5:1998
Edition 1999-02

Heat exchangers - Water to water heat exchangers for district heating - Test procedures for establishing the performance data; German version EN 1148:1998/A1:2005
Edition 2005-12

Methods of test for ancillary components for masonry - Part 11: Determination of dimensions and bow of lintels; German version EN 846-11:2000
Edition 2000-08

Steel strip sheaths for prestressing tendons - Test methods - Part 5: Determination of tensile load resistance; German version EN 524-5:1997
Edition 1997-07

Ultrasonics - Physiotherapy systems - Field specifications and methods of measurement in the frequency range 20 kHz to 500 kHz (IEC 63009:2019); German version EN IEC 63009:2019
Edition 2021-04

Measurement of quartz crystal unit parameters - Part 5: Methods for the determination of equivalent electrical parameters using automatic network analyser techniques and error correction (IEC 60444-5:1995); German version EN 60444-5:1997
Edition 1997-10

Steel forgings for pressure purposes - Part 2: Ferritic and martensitic steels with specified elevated temperatures properties; German version EN 10222-2:2017+A1:2021
Edition 2021-08