IEC 61000-4-6:2023

Overview

IEC 61000-4-6:2023 is the IEC basic EMC publication that specifies testing and measurement techniques for immunity to conducted disturbances induced by radio‑frequency (RF) fields. It covers conducted immunity of electrical and electronic equipment to RF disturbances in the range 150 kHz to 80 MHz (with product-committee option to extend methods up to 230 MHz, see Annex B). The 2023 fifth edition is a technical revision that updates injection device selection, revises saturation checks and level‑setting, removes the AE impedance check for clamp injection, and adds Annex H on testing with multiple signals.

Key topics and technical requirements

• Scope and exclusions: Applies to equipment having at least one conducting wire/cable (mains, signal, earth). Equipment without such conductors is excluded.
• Test levels and performance criteria: Procedures for establishing immunity test levels and evaluating functional performance under conducted RF disturbance. Product committees set final test levels and criteria (per IEC Guide 107).
• Test equipment and level-setting: Requirements for the test generator, modulation, and level‑setting using feedback loops only. Includes guidance on amplifier linearity, harmonics and saturation checks (Annex J).
• Coupling and decoupling devices (CDNs): Specifications and examples for coupling/decoupling networks, including screened and unscreened cable applications.
• Injection methods: Defined methods for CDN injection, clamp injection and direct injection, plus rules for selecting the appropriate method and ports to test.
• Verification and measurement: Procedures to verify common‑mode impedance at the EUT port, insertion loss of adapters, and measurement uncertainty (Annex G).
• Test procedure, evaluation and reporting: Structured steps for setup, execution, performance assessment, and required test report content.
• Informative annexes: Practical guidance on frequency range selection (Annex B), test generator specs (Annex E), large EUT setups (Annex F), multiple-signal testing (Annex H), port‑to‑port injection (Annex I), and more.

Practical applications and users

Who uses IEC 61000-4-6:

• EMC laboratories performing conducted RF immunity testing
• Manufacturers and design engineers validating product immunity during development
• Certification bodies and product committees that adopt test levels and performance criteria
• Compliance and regulatory teams ensuring products meet international EMC expectations

Practical uses:

• Assessing functional immunity of equipment subjected to RF-induced conducted disturbances
• Selecting appropriate injection methods (CDN, clamp, direct) and verifying test setups
• Ensuring repeatable, comparable test results across facilities for product qualification

Related standards

• IEC 61000 series (other basic EMC publications) and IEC Guide 107 (role of basic publications and product committees). For traceable application, consult product‑specific EMC standards that reference IEC 61000-4-6 for conducted immunity requirements.

Keywords: IEC 61000-4-6, EMC, conducted immunity, RF immunity testing, coupling and decoupling network, CDN, clamp injection, test generator, 150 kHz–80 MHz.