BS EN IEC 60938-2-1:2024
Fixed inductors for electromagnetic interference suppression - Blank detail specification. Inductors for which safety tests are required

Standard No.

BS EN IEC 60938-2-1:2024

Release Date

2024

Published By

British Standards Institution (BSI)  GB  /  BSI

Latest

BS EN IEC 60938-2-1:2024

Introduction

Analysis of the core content of the standard

BS EN IEC 60938-2-1:2024, as an important part of the IEC 60938 series of standards, specifies the detailed specification requirements for electromagnetic interference suppression fixed inductors that require safety testing. This standard replaces the 2000 version of BS EN 60938-2-1. The main technical changes include:

Technical elements	2000 version	2024 version
Specification structure	Separate from IEC 60938-2-2	Merged into a unified blank detail specification
Test procedures	Main text includes quality consistency inspection	Moved to informative Appendix B
International coordination	Some national differences	Completely equivalent to IEC 60938-2-1:2023

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Key Technical Requirements

1. Safety Test System

Chapter 5 of the standard establishes a three-level inspection system:

• Batch inspection: includes basic items such as visual inspection, DC resistance, inductance, etc.
• Periodic inspection: covers reliability tests such as temperature shock, vibration, and resistance to welding heat
• Quality consistency inspection: carried out in accordance with the sampling plan in Appendix B

2. Key parameter definitions

Table 2 clarifies the relationship between the three core parameters of inductors:

Application Case: When a certain type of inductor is marked with LN=10mH and IR=2A, its maximum DC resistance must meet the corresponding requirements of the standard

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Implementation Suggestions

1. Design Change Management

According to Appendix A of the standard, the manufacturer must notify the certification body when making the following changes:

1. Packaging material change
2. Core material replacement
3. Winding structure modification

2. Test Notes

Special test conditions requirements:

Test Items	Key Parameters
Temperature Cycle	θA lower limit category temperature →θB upper limit category temperature, 5 cycles
Moisture resistance steady state	Recovery time 1-26 hours, polarization voltage according to detailed specifications

3. Standard conversion period

According to the European Committee for Standardization:

• 2024-10-10: Latest implementation date for each country
• 2027-01-10: Latest withdrawal date for conflicting standards

BS EN IEC 60938-2-1:2024 Referenced Document

• IEC 60938-2:2021 Fixed inductors for electromagnetic interference suppression - Part 2: Sectional specification on power line chokes

BS EN IEC 60938-2-1:2024 history

• 2024 BS EN IEC 60938-2-1:2024 Fixed inductors for electromagnetic interference suppression - Blank detail specification. Inductors for which safety tests are required

Standard and Specification