- #1
likephysics
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What is the difference between ESD and EFT compliance testing.
EFT is continuous and ESD is not?
EFT is continuous and ESD is not?
What Is the Difference Between ESD and EFT Compliance Testing?
- Thread starter likephysics
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- Compliance Testing
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SUMMARY
The discussion clarifies the differences between ESD (Electrostatic Discharge) and EFT (Electric Fast Transient) compliance testing. ESD testing, defined by EN 61000-4-2, involves both air and contact discharge transient testing, with discharges occurring a few seconds apart. In contrast, EFT testing, outlined in EN 61000-4-4, utilizes a capacitive clamp for IO lines and delivers bursts of transients approximately every 100 milliseconds for a duration of around 30 seconds. Both tests are crucial for ensuring electronic device resilience against electrical disturbances.
PREREQUISITES- Understanding of EN 61000-4-2 ESD testing standards
- Familiarity with EN 61000-4-4 EFT testing protocols
- Knowledge of transient testing methodologies
- Experience with capacitive coupling techniques for IO lines
- Research the specifics of EN 61000-4-2 ESD testing procedures
- Explore the implementation of EN 61000-4-4 EFT testing in product design
- Learn about the effects of electrostatic discharge on electronic components
- Investigate best practices for conducting compliance testing in electronic devices
Electronics engineers, compliance testing professionals, and product designers focused on enhancing device reliability against electrical disturbances.
- #2
berkeman
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likephysics said:
There are several differences. EN 61000-4-2 ESD testing consists of both air discharge and contact discharge transient testing. And yes, the "hits" are generally a few seconds apart. You deliver the hits to all exposed metal surfaces, or anything else that will attract a discharge.
EN 61000-4-4 Electric Fast Transient (EFT) testing can either be conducted in via the power cord, or for IO lines, a 1 meter capacitive clamp is used to couple the transients into the IO lines. The transients are bursts that are spaced about 100ms apart (IIRC), and the test goes on for something like 30 seconds or so.
Discussion of EFT "Burst" testing: http://www.google.com/url?sa=t&rct=...OpGB9THxTynmDtEGCmQzd1w&bvm=bv.45645796,d.cGE
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