What is en 61000-4-2?
What is en 61000-4-2?
IEC 61000-4-2 is the International Electrotechnical Commission’s immunity standard on Electrostatic Discharge (ESD). The publication is one of the basic EMC standards of the IEC 61000–4 series. The European equivalent of the standard is called EN 61000-4-2.
What is iec ESD?
The IEC standard is a system level test that replicates a charged person discharging to a system in a system end user environment. The IEC 61000-4-2 standard defines four standard levels of ESD protection, using two different testing methodologies.
How do you conduct an ESD test?
The testing conducted consists of applying one positive and one negative pulse to the component, allowing a 0.3 second interval between pulses. A set of devices is exposed to these pulses at a given voltage level and pin grounding combinations; the device is tested for full static and dynamic parameters.
What is ESD test?
ESD testing is an electromagnetic compatibility test (EMC test). ESD testing simulates various electrostatic impacts that equipment might experience either during transit or operation. An electrostatic discharge test determines whether a product is in compliance with its ESD protective area and procedures.
What are the levels of ESD sensitivity?
To get an idea of what is required, it is best to know the Human-Body Model (HBM) and Charged-Device Model (CDM) sensitivity levels for all devices that will be handled in your facility. ANSI/ESD S20….Part 5 Device Sensitivity and Testing.
| Classification | Voltage Range (V) |
|---|---|
| 1C | 1000 to < 2000 |
| 2 | 2000 to < 4000 |
| 3A | 4000 to < 8000 |
| 3B | ≥ 8000 |
Why ESD test is required?
A charged device model (CDM) test is used to define the ESD a device can withstand when the device itself has an electrostatic charge and discharges due to metal contact. This discharge type is the most common type of ESD in electronic devices and causes most of the ESD damages in their manufacturing.
What is ESD standard?
The standard covers the requirements necessary to design, establish, implement, and maintain an ESD control program to protect electrical or electronic parts, assemblies and equipment susceptible to ESD damage from Human Body Model (HBM) discharges greater than or equal to 100 volts. …
How is ESD discharge measured?
The charge can be measured by individual charge meter or by measuring the discharge curve from the charged device. From the discharge curve the discharged current, energy and charge can be calculated. There are no exact acceptance levels; they must be analyzed according to ESD sensitivity of the device in case.
How do you test for HBM?
For HBM tests, there is a simple series RC network to simulate the discharge from a human body. A 1-MΩ resistor is used to charge a 100-pF capacitor. A 1.5-kΩ resistor is used for discharging. HBM events are most disruptive with fast rise times.
Are inductors ESD sensitive?
Transformers and inductors are not considered ESD sensitive.
How can you prevent ESD?
Avoid hand contact by transporting and storing products in static-safe containers. Keep electrostatic-sensitive parts in their containers until they arrive at static-protected workstations. Place parts in a static-protected area before removing them from their containers. Avoid touching pins, leads, or circuitry.
How can you control ESD?
Guidelines for Avoiding Electrostatic Discharge
- Keep electronic equipment away from blowing air, as it increases electric accumulation.
- Keep electronics away from plastics and other synthetic materials which accumulate electric charges.
- Install a grounding system designed for low voltage dissipation.