IEC 61000 is a series of International Electrotechnical Commission (IEC) standards related to electromagnetic compatibility (EMC) for electrical and electronic equipment. The IEC 61000 series of standards specifies limits and test methods for emissions and immunity of electrical and electronic equipment to ensure that the equipment can operate in its intended environment without causing or experiencing electromagnetic interference (EMI).

The IEC 61000 series of standards covers a wide range of EMC topics, including electromagnetic emissions, immunity, electrostatic discharge (ESD), surge, and voltage dips and interruptions. Some of the most commonly referenced standards within the series include:

• IEC 61000-4-2: This standard specifies test methods and performance criteria for ESD protection of electronic equipment.

• IEC 61000-4-3: This standard specifies test methods and performance criteria for radiated electromagnetic field immunity testing of electronic equipment.

• IEC 61000-4-4: This standard specifies test methods and performance criteria for electrical fast transient (EFT) and surge immunity testing of electronic equipment.

• IEC 61000-4-5: This standard specifies test methods and performance criteria for surge immunity testing of electronic equipment.

• IEC 61000-4-6: This standard specifies test methods and performance criteria for conducted immunity testing of electronic equipment.

• IEC 61000-4-11: This standard specifies test methods and performance criteria for voltage dips, short interruptions, and voltage variations immunity testing of electronic equipment.

Compliance with the IEC 61000 series of standards is often required for electronic equipment to be sold in international markets, and is necessary for the safe and reliable operation of the equipment in its intended environment.