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BS EN IEC 60938-1:2021 Fixed inductors for electromagnetic interference suppression - Generic specification, 2021
- undefined
- Annex ZA (normative)Normative references to international publicationswith their corresponding European publications
- English [Go to Page]
- CONTENTS
- FOREWORD
- INTRODUCTION [Go to Page]
- Figure 1 – Relevant specification
- 1 Scope
- 2 Normative references
- Figures
- 3 Terms, definitions and conventions [Go to Page]
- 3.1 Terms and definitions
- 3.2 Conventions
- 4 General requirements [Go to Page]
- 4.1 General
- 4.2 Preferred values [Go to Page]
- 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 [Go to Page]
- 4.3.1 General
- 4.3.2 Outline drawing and dimensions
- Figure 2 – Relation between ambient temperature and applied current [Go to Page]
- 4.3.3 Mounting
- 4.3.4 Ratings and characteristics
- 4.4 Insulated inductors
- 4.5 Marking
- 5 Tests and measurement procedures [Go to Page]
- 5.1 General
- 5.2 Standard atmospheric conditions
- 5.3 Visual examination
- 5.4 Insulation resistance
- Tables [Go to Page]
- Table 1 – Standard atmospheric conditions
- 5.5 Voltage test
- Table 2 – Measuring voltage for insulation resistance testing
- 5.6 Inductance
- 5.7 Resistance
- 5.8 Insertion loss
- 5.9 Temperature rise
- 5.10 Impulse voltage
- 5.11 Endurance
- 5.12 Robustness of terminations
- 5.13 Vibration
- 5.14 Shock
- 5.15 Resistance to soldering heat
- Figure 3 – Temperature profile for reflow simulation
- 5.16 Solderability [Go to Page]
- 5.16.1 General
- 5.16.2 Preconditioning
- Table 3 – Temperatures for reflow simulation with different solder paste alloy types [Go to Page]
- 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 [Go to Page]
- 5.19.1 General
- 5.19.2 Dry heat
- 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
- 5.20 Damp heat, steady state
- 5.21 Passive flammability
- 5.22 Glow wire
- 5.23 Ball pressure
- 5.24 Component solvent resistance
- 5.25 Solvent resistance of marking
- Annex A (normative) Measuring points for electrical tests and measurements [Go to Page]
- A.1 General
- A.2 Foil method
- A.3 Method for inductors with mounting devices
- Table A.1 – Measuring points for electrical tests
- A.4 Vblock method
- Figure A.1 – Examples how to connect electrical tests
- Annex B (normative) Requirements for earth inductors [Go to Page]
- Table B.1 – Minimum copper cross-sectional area of earth inductor’s winding
- Annex C (normative) Example of a suitable circuit for the voltage endurance test [Go to Page]
- Figure C.1 – Test circuit for endurance voltage
- Annex X (informative) Cross-references to the previous edition of this document
- Bibliography [Go to Page]
