What is the criteria for EN 61000-4-2?

The EN 61000-4-2 is an international standard that defines the criteria for immunity of electronic equipment against electrostatic discharge (ESD). In this article, we will delve into the technical aspects of EN 61000-4-2 and explore its various criteria for testing and compliance.

of EN 61000-4-2

EN 61000-4-2, also known as IEC 61000-4-2, provides guidelines for testing the immunity of electronic devices to ESD. ESD is a sudden, high-current flow caused by static electricity discharge, which can damage or disrupt the proper functioning of electronic equipment. This standard outlines the specific test methods and performance criteria that electronic devices should meet to demonstrate their robustness against ESD events.

The standard covers several key parameters that define the criteria for EN 61000-4-2:

1. Test Levels

EN 61000-4-2 specifies different test levels, ranging from 2 kV to 15 kV, to simulate various ESD events. These test levels represent different environments where electronic devices may be exposed to electrostatic discharges, such as in manufacturing plants, hospitals, or residential areas. Manufacturers need to ensure that their devices can withstand these specified test levels without experiencing any functional degradation.

2. Contact and Air Discharge Modes

In order to replicate the two primary types of ESD events, EN 61000-4-2 includes two distinct test modes: contact discharge and air discharge. The contact discharge mode simulates the discharge between a human body and the device, while the air discharge mode represents the discharge that occurs in free air or through insulating materials. Equipment is tested in both modes to ensure its immunity against ESD in different scenarios.

3. Performance Criteria

To comply with EN 61000-4-2, electronic devices must meet certain performance criteria during the test procedures. These criteria are defined based on the device's functionality and operation. The standard specifies that equipment should continue to operate without any performance degradation or loss of data during and after the ESD events. Essential functions and safety features should remain unaffected, ensuring proper operation even in the presence of electrostatic discharges.

In conclusion, EN 61000-4-2 sets the criteria for testing the immunity of electronic devices against ESD. Manufacturers need to understand and comply with the specific test levels, contact and air discharge modes, as well as the performance criteria outlined in this standard to ensure the reliability and robustness of their products. By adhering to these criteria, electronic devices can maintain their functionality and avoid potential damages caused by electrostatic discharges.