The IEC 61000-4-4 is a standard for immunity to electrical fast transient/burst (referred to as EFT/B) of electronic products. Test generator specifications, its verifications, test method and other details are described. It is the most commonly used testing standard for almost all electronics product categories.

The IEC 61000-4-4 is the EFT/B part of the IEC 61000-4 series basic standards widely referenced in many product families (categories) and product standards.