IEC 60938-1-2021 pdf download.Fixed inductors for electromagnetic interference suppression – Part 1: Generic specification.
This part of IEC 60938 applies to inductors designed for electromagnetic interference suppression intended for use within all kind of electric and electronic equipment.
In this generic specification, normative references and terms and definitions are given. It also prescribes general requirements and the suitable test and measurement procedures for interference suppression inductors. Annex B states special requirements for earth inductors.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies.
For undated references, the latest edition of the referenced document (including any amendments) applies.
CISPR 1 7, Methods of measurement of the suppression characteristics of passive EMC filtering devices
IEC 60027 (all parts), Letter symbols to be used in electrical technology
IEC 60050 (all parts), International Electrotechnical Vocabulary (IEV) (available at www.electropedia.org)
IEC 60060-1 , High-voltage test techniques – Part 1: General definitions and test requirements
IEC 60062, Marking codes for resistors and capacitors
IEC 60068-1 , Environmental testing – Part 1: General and guidance
IEC 60068-2-1 , Environmental testing – Part 2-1: Tests – Tests A: Cold
IEC 60068-2-2, Environmental testing – Part 2-2: Tests – Tests B: Dry Heat
IEC 60068-2-6, Environmental testing – Part 2-6: Tests – Test Fc: Vibration (sinusoidal)
IEC 60068-2-1 3, Environmental testing – Part 2-13: Tests – Test M: Low air pressure
IEC 60068-2-1 4, Environmental testing – Part 2-14: Tests – Test N: Change of temperature
IEC 60068-2-1 7, Basic environmental testing procedures – Part 2-17: Tests – Test Q: Sealing
IEC 60068-2-20, Environmental testing – Part 2-20: Tests – Test T: Test methods for solderability and resistance to soldering heat of devices with leads
IEC 60068-2-21 , Environmental testing – Part 2-21: Tests – Test U: Robustness of terminations and integral mounting devices
IEC 60068-2-27, Environmental testing – Part 2-27: Tests – Test Ea and guidance: Shock
IEC 60068-2-30, Environmental testing – Part 2-30: Tests – Test Db: Damp heat, cyclic
IEC 60068-2-45, Basic environmental testing procedures – Part 2-45: Tests – Test XA and guidance: Immersion in cleaning solvents
IEC 60068-2-58, Environmental testing – Part 2-58: Tests – Test Td: Test methods for solderability, resistance to dissolution of metallization and to soldering heat of surface mounting devices (SMD).
IEC 60068-2-78, Environmental testing – Part 2-78: Tests – Test Cab: Damp heat, steady state
IEC 60335-1 , Household and similar electrical appliances – Part 1: General requirements
IEC 6061 7, Graphical symbols for diagrams (available at http://std.iec.ch/iec6061 7)
IEC 60695-2-1 1 , Fire hazard testing – Part 2-11: Glowing/hot-wire based test methods – Glow- wire flammability test method for end-products (GWEPT)
IEC 60695-2-1 2, Fire hazard testing – Part 2-12: Glowing/hot-wire based test methods – Glow- wire flammability index (GWFI) test method for materials
IEC 60695-2-1 3, Fire hazard testing – Part 2-13: Glowing/hot-wire based test methods – Glow- wire ignition temperature (GWIT) test method for materials
IEC 60695-1 0-2, Fire hazard testing – Part 10-2: Abnormal heat – Ball pressure test method
IEC 60695-1 1 -1 0, Fire hazard testing – Part 11-10: Test flames – 50 W horizontal and vertical flame test methods
IEC 60695-1 1 -20, Fire hazard testing – Part 11-20: Test flames – 500 W flame test method
ISO 80000-6, Quantities and units – Part 6: Electromagnetism
3 Terms, definitions and conventions
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
For the purposes of this document, the following terms and definitions apply.
3.1 Terms and definitions
3.1 .1 choke inductor construction that employs one or more windings for a frequency-dependent impedance.IEC 60938-1 pdf download.