How you would use the ESD test gun to perform ESD tests

The ESD test is used to determine the durability of electronic devices when electrostatic discharge occurs when a person touches them. These tests can be conducted with the help of lightweight and portable electrostatic discharge simulators, also known as ESD guns. This article will demonstrate how to conduct an ESD test using LISUN’s electrostatic discharge simulator.

What is ESD Testing?

Electromagnetic compatibility testing is referred to as ESD testing (EMC test). ESD testing simulates various electrostatic impacts that equipment may encounter while in transit or in operation. An electrostatic discharge test determines whether a product’s ESD protective area and procedures are being followed.

ESD can be transmitted through the air or through contact. The human body method is the most used ESD test. The test simulates the effect of a human discharging electrical energy onto an electronic component. This energy is the result of a static build-up.

An ESD test confirms that the equipment operates properly in accordance with the test requirements and the manufacturer’s operating procedures. In most cases, ESD testing is part of a larger EMC test plan for product certification compliance.

Model of Human Body (HBM)

This ESD testing model replicates the ESD discharge from the fingertip of an individual to a device. An RC circuit is used in the model to generate an exponentially decaying current pulse. The component is tested by applying one positive and one negative pulse, with a 0.3 second interval between pulses.

A set of devices, including the ESD testing gun, is subjected to these pulses at various voltage levels and pin grounding configurations, and the device is evaluated for full static and dynamic parameters. A typical test run includes twenty devices. Each level is applied to a set of five devices in 50 V increments. Most devices test in ranges from 150–500 V.

Electrostatic Discharge Standard Testing Procedures

ESD testing can be done in two ways. One method is the air method and the other method is the contact method. Moving a charged generator or discharge object, such as an ESD testing gun, towards the device being assessed is the air method of ESD testing. There are many factors that can influence ESD testing with an ESD testing simulator. Humidity, the speed of the discharge object towards the test device, and temperature are examples of these. In low temperature and humidity environments, ESD events are much more common .

The contact method ESD testing aids in the elimination of the effects of environmental factors such as temperature and humidity. An ESD testing gun is used in direct contact with the device to be evaluated in this test method. This contact is maintained throughout the test. While this test method is consistent across environmental conditions, contact ESD occurs infrequently in nature.

Charged Device Model (CDM)

This testing model simulates an ESD discharge event with an ESD simulator. This happens when a charged component discharges to another object with a different electrostatic potential. Three samples are submitted to the CDM test for each voltage level. A test voltage applied to the field charge The electrode raises the device’s potential. Each pin receives five positive and negative discharges.

They give the device enough time between discharges to reach the full test voltage.
The applied test voltages begin at 100 V and increase in 50 V increments. When all three samples stressed at this level pass, the device passes a voltage level. The device has been thoroughly evaluated for all static and dynamic parameters. A typical test run includes twenty devices. Each level is applied to a set of five devices in 50 V increments.

ESD Tests with LISUN at the system level

The following guidelines specified in IEC 61000-4-2 are to better understand device performance within an application. The IEC standard specifies the typical discharge current waveforms, test levels, test equipment, test configuration, and test procedure. System-level testing simulates a device in an application, such as a switch in a mobile phone. The test environment must closely resemble the actual end-user environment.

What are the Hazards of ESD?

ESD is a frequent problem. Electrostatic discharge can have a significant impact. Unfortunately, this is true regardless of whether the ESD level is so low as to be undetectable by hearing or sight or as high as electrical sparks or lightning. Electrostatic discharge can cause a variety of issues. Mechanical failures, coal dust explosions, fuel vapor explosions, and bodily injury are just some examples. Contact spiking, junction damage, metal penetration, and gate oxide damage are examples of mechanical failures caused by ESD.

What is ESD Immunity?

ESD immunity and ESD protection should be considered when designing a product. Electronics manufacturers must identify ESD-reducing measures during this phase. They should also determine when their products are susceptible to ESD or have the potential to cause ESD. These measures may include establishing static -free electrostatic protective areas, controlling humidity, and employing anti-charging measures such as avoiding highly charging materials. Another option is to take antistatic measures, such as grounding human workers or requiring antistatic devices.

ESD test gun

ESD guns, also known as electrostatic discharge simulators, are the most commonly used devices in ESD testing. These simulators are small and lightweight. As a result, they are easily accessible to users and applicable in a variety of settings and situations. ESD guns are programmable and can detect voltages ranging from 16kV to 30kV. It can also be further customized based on the situation and testing needs. In order to meet international ESD testing standards, it was designed to be quick and adaptable.

Usage of electrostatic discharge simulator

An electrostatic discharge simulator is used to test the resistance of electronic devices to electrostatic discharge (ESD). These simulators are used in laboratories for electromagnetic compatibility (EMC). ESD pulses are produced when two objects with different electrical charges come into proximity or contact. In a testing environment, recreating them helps ensure that the device under test is resistant to static electricity discharges. To simulate different discharges, many ESD guns have interchangeable modules with different discharge Networks or RC Modules (Specific resistance and capacitance values). These modules are typically installed in the pistol component of the electrostatic discharge simulator’s handle, similar to how handguns are loaded.

Lisun Instruments Limited was found by LISUN GROUP in 2003. LISUN quality system has been strictly certified by ISO9001:2015. As a CIE Membership, LISUN products are designed based on CIE, IEC and other international or national standards. All products passed CE certificate and authenticated by the third party lab.

Our main products are  Goniophotometer ,  Integrating Spheres ,  Spectroradiometer ,  Surge Generator ,  ESD Simulator Guns ,  EMI Receiver ,  EMC Test Equipment ,  Electrical Safety Tester ,  Environmental Chamber ,  Temperature Chamber ,  Climate Chamber ,  Thermal Chamber ,  Salt Spray Test ,  Dust Test Chamber ,  Waterproof Test ,  RoHS Test (EDXRF) ,  Glow Wire Test  and  Needle Flame Test .

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