Industrial communication networks - Fieldbus specifications and Profiles - Type 27 elements (MECHATROLINK) (IEC 65C/1104/CDV:2021); English version prEN IEC 61158-X-27:2021

Industrial communication networks - Fieldbus specifications and Profiles - Type 28 elements (AUTBUS) (IEC 65C/1105/CDV:2021); English version prEN IEC 61158-X-28:2021

Industrial communication networks - Fieldbus specifications and Profiles - Type 27 elements (MECHATROLINK) (IEC 65C/1104/CDV:2021); English version prEN IEC 61158-X-27:2021

Industrial communication networks - Fieldbus specifications and Profiles - Type 28 elements (AUTBUS) (IEC 65C/1105/CDV:2021); English version prEN IEC 61158-X-28:2021

Radio Frequency Connectors - Part 69: Sectional specification for series SMP3 RF coaxial connectors (IEC 46F/553/CD:2021); Text in German and English

Circuit boards and circuit board assemblies - Design and use - Part 6-3: Land pattern design - Description of land pattern for through hole components (THT) (IEC 91/1700/CD:2021); Text in German and English

Test methods for electrical materials, printed board and other interconnection structures and assemblies - Part 2-809: X/Y Coefficient of Thermal Expansion Test (CTE) for Thick Base Materials by TMA (IEC 91/1747/CD:2021); Text in German and English

Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 2-21: Tests - Composite temperature/humidity cyclic test (IEC 86B/4468/CD:2021); Text in German and English

Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 2-22: Tests - Change of temperature (IEC 86B/4445/CD:2021); Text in German and English

Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 2-33: Tests - Assembly and disassembly of fibre optic mechanical splices, fibre management systems and protective housings (IEC 86B/4528/CD:2021); Text in German and English