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BS EN IEC 60938-1:2021

BS EN IEC 60938-1:2021

$167.15

Fixed inductors for electromagnetic interference suppression – Generic specification

Published By Publication Date Number of Pages
BSI 2021 38
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This International Standard applies to inductors designed for electromagnetic interference suppression intended for use within all kind of electric and electronic equipment. In this Generic Specification normative reference, terms and definitions are given. It also prescribes General requirements and the suitable test and measurement procedures for interference suppression inductors.

PDF Catalog

PDF Pages PDF Title
2 undefined
5 Annex ZA (normative)Normative references to international publicationswith their corresponding European publications
7 English
CONTENTS
9 FOREWORD
11 INTRODUCTION
12 Figure 1 – Relevant specification
13 1 Scope
2 Normative references
Figures
14 3 Terms, definitions and conventions
3.1 Terms and definitions
16 3.2 Conventions
4 General requirements
4.1 General
17 4.2 Preferred values
4.2.1 General
4.2.2 Rated current
4.2.3 Temperature de-rated current
4.3 Information to be given in a detail specification
4.3.1 General
4.3.2 Outline drawing and dimensions
Figure 2 – Relation between ambient temperature and applied current
18 4.3.3 Mounting
4.3.4 Ratings and characteristics
4.4 Insulated inductors
4.5 Marking
19 5 Tests and measurement procedures
5.1 General
5.2 Standard atmospheric conditions
5.3 Visual examination
5.4 Insulation resistance
Tables
Table 1 – Standard atmospheric conditions
20 5.5 Voltage test
Table 2 – Measuring voltage for insulation resistance testing
21 5.6 Inductance
5.7 Resistance
5.8 Insertion loss
5.9 Temperature rise
5.10 Impulse voltage
22 5.11 Endurance
5.12 Robustness of terminations
5.13 Vibration
5.14 Shock
23 5.15 Resistance to soldering heat
24 Figure 3 – Temperature profile for reflow simulation
25 5.16 Solderability
5.16.1 General
5.16.2 Preconditioning
Table 3 – Temperatures for reflow simulation with different solder paste alloy types
26 5.16.3 Test procedure
5.16.4 Final inspection, measurements, and requirements
5.17 Rapid change of temperature
5.18 Container sealing
5.19 Climatic sequence
5.19.1 General
5.19.2 Dry heat
27 5.19.3 Damp heat, cyclic, test Db, first cycle
5.19.4 Cold
5.19.5 Low air pressure
5.19.6 Damp heat, cyclic, test Db, remaining cycles
Table 4 – Number of remaining cycles for damp heat
28 5.20 Damp heat, steady state
5.21 Passive flammability
5.22 Glow wire
5.23 Ball pressure
5.24 Component solvent resistance
29 5.25 Solvent resistance of marking
30 Annex A (normative) Measuring points for electrical tests and measurements
A.1 General
A.2 Foil method
A.3 Method for inductors with mounting devices
Table A.1 – Measuring points for electrical tests
31 A.4 Vblock method
Figure A.1 – Examples how to connect electrical tests
32 Annex B (normative) Requirements for earth inductors
Table B.1 – Minimum copper cross-sectional area of earth inductor’s winding
33 Annex C (normative) Example of a suitable circuit for the voltage endurance test
Figure C.1 – Test circuit for endurance voltage
34 Annex X (informative) Cross-references to the previous edition of this document
36 Bibliography

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BS EN IEC 60938-1:2021
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