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Materials for printed boards and other interconnecting structures - Part 2-47: Reinforced base materials clad and unclad - Non-halogenated epoxide non-woven/woven E-glass reinforced laminate sheets of thermal conductivity (2.0W/m K) and defined flammability (vertical burning test), copper-clad for lead-free assembly (IEC 61249-2-47:2018). Original standard BS EN IEC 61249-2-47-2018 in PDF full version. Additional info + preview on request
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Materials for printed boards and other interconnecting structures - Reinforced base materials, clad and unclad. Base materials for integrated circuit card carrier tape, unclad. Original standard BS EN IEC 61249-2-51-2023 in PDF full version. Additional info + preview on request
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Materials for printed boards and other interconnecting structures - Sectional specification set for reinforcement materials. Specification for finished fabric woven from "E" glass for printed boards. Original standard BS EN IEC 61249-6-3-2023 in PDF full version. Additional info + preview on request
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Electroacoustics. Instruments for measurement of aircraft noise. Performance requirements for systems to measure sound pressure levels in noise certification of aircraft. Original standard BS EN IEC 61265-2018 in PDF full version. Additional info + preview on request
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Fibre optic communication subsystem test procedures - General communication subsystems. Measurement of central wavelength, spectral width and additional spectral characteristics. Original standard BS EN IEC 61280-1-3-2021 in PDF full version. Additional info + preview on request
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Fibre optic communication subsystem test procedures - General communication subsystems. Light source encircled flux measurement method. Original standard BS EN IEC 61280-1-4-2023 in PDF full version. Additional info + preview on request
Document status: Active