Semiconductor devices - Part 5-13: Optoelectronic devices - Hydrogen sulphide corrosion test for LED...
IEC 60747-5-13:2021 provides the accelerated test method to assess effects of the tarnishing of silver and silver alloys used for LED packages due to hydrogen sulphide. Particularly, this test method is intended to give information on silver and silver alloy tarnishing effects to the luminous/radiant flux maintenance of LED packages. Additionally, this test method can give information on electric…
Semiconductor devices - Micro-electromechanical devices - Part 41: RF MEMS circulators and isolators
IEC 62047-41:2021 specifies the terminology, essential ratings and characteristics, and measuring methods of RF (Radio Frequency) MEMS (Micro-Electro-Mechanical Systems) circulators and isolators.
Electricity metering equipment - Particular requirements - Part 41: Static meters for DC energy (cla...
IEC 62053-41:2021 applies only to static watt-hour meters of accuracy classes 0,5 and 1 for the measurement of DC electrical energy in DC systems, and it applies to their type tests only.
This document applies to electricity metering equipment designed to:
• measure and control electrical energy on electrical networks with two poles where one of the poles is connected to earth and with voltage…
Plastics — Poly(methyl methacrylate) sheets — Types, dimensions and characteristics — Part 3: Contin...
This document specifies requirements for non-modified flat poly(methyl methacrylate) (PMMA) continuous cast sheets for general-purpose use. The sheets can be colourless or coloured, and can be transparent, translucent or opaque.
The thickness range of the sheets covered by document is 1Â mm to 10Â mm.
Soil and waste — Guidance on the selection and application of screening methods
This document provides guidance on the selection and application of screening methods for assessing soil quality and waste characterization, including distribution of target parameters in soil and soil‑like material. The aim of this document is to set up criteria as to when the different kind of screening methods can be applied for the analysis of a certain parameter in soil, including soil‑like…