Electrostatic Discharge Immunity Test

 

Most engineers have fundamental EMC understanding, including the experience of witnessing the ESD testing in a test lab. The test lab often relies on the product manufacturer to determine the test points as they draft the test plan in accordance to the product compliance standard, IEC/EN 61000-4-2 is a common electrostatic discharge immunity test standard, often referred to in product standards.

 

Most elecrostatic discharge testing, to most standards, will instruct the technician to run a test sequence of ten discharges in one second intervals in both positive and negative polarity. The test standard may notate a ‘test environment’ consisting of a test bench and grounding plane. For pre compliance testing, this may not be necessary. But take care to not discharge near other (expensive) electronics in use. With each electrostatic discharge, an EM pulse is emitted from the simulator and can affect nearby equipment. For precompliance, ESD generators have a voltage potentiometer to identify failure thresholds.

What is an Electrostatic Discharge Immunity Test

The primary goal is to replicate electric static and apply the event to a selected amount of test points. Common locations on todays commercial electronics include a USB port and the touch screen interface. Other locations on the chassis where a user may grab the product should be tested.

Electrostatic Discharge Immunity Test Setup

Electrostatic Discharge Immunity Test Setup

 

Contact vs Air Electrostatic Discharge Testing

The goal is to directly apply the electrostatic discharge to the product under test using the contact tip. However, in most instances where a test point is to a non-conductive surface, the air tip is used. The user pulling the trigger to charge the air tip and approach until the discharge. There may be instances where an ESD event is not observed, assuming your electrostatic generator is functioning properly, this is OK and your product passes.

 

Videos Electrostatic Discharge Immunity Test

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  • The Teseq INA 4430 Charge Remover product is compatible of Teseq NSG 438A

    $2,640.00
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    • Test voltage up to 30 kV for air and contact discharge
    • Buying options: Rent EM Test NX30
    • Discharges up to 25 Hz
    • 80 easy-to-change R/C-networks and tips
    • Switchable Bleed-Off function
    • Built-in activity log
    • AC mains supply and DC supply
    • Battery tested to 30,000 pulses @30 kV
    • Built -in selftest function
    • USB-interface
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    • Complies with the EN/IEC61000-4-2 standard
    • Maximum testing voltage of +/-30 kV exceeds required test levels
    • Easy-to-use panel design
    • Equipped with the programming feature (KES4022A)
    • Supports a wide range of electrostatic standards
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    $959.00 Monthly
    • Rental Price billed every 30 days (2 Days Grace for Transit)
    • Rentals includes all accessories for Air- and contact-discharge to 30 kV
    • 150pF/330 Ohm Network Suitable for IEC 61000-4-2, MIL-STD-461 an DO-160 Testing
    • NIST Calibration documentation with data provided
    • Same Day Shipping on Orders Placed by 3 PM
    $959.00
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    • “Pre-checking function” taking the confirmable test into the account
    • “Discharge Detecting Function” to realize the air-discharge confirmation.
    • “Lightest Discharge Gun in the market” to lighten the continual operation
    • White LED Irradiator to facilitate the visualization of the discharging area.
    • One-touch exchange of gun head and CR unit realized
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    • Built-in self check function with ESD tip terminal to verify discharge relay operation
    • Indicator light confirm discharge (Red to Green)
    • Easily interchangeable Resistance/Capacitance modules
    • LED light to focus and/or illuminate discharging areas
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    • Rentals includes all accessories for Air- and contact-discharge to 30 kV
    • Discharge Networks for Unique Resistance & Capacitance Requirements
    • NIST Calibration documentation with data provided
    • Same Day Shipping on Orders Placed by 3 PM
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