Electrostatic Discharge (ESD) Protection for Electronics
1 resources tagged with "Electrostatic Discharge"
Electrostatic discharge is a leading cause of latent field failures in China-sourced electronics, and it gets engineered out at both the design and factory floor stages. Designs are validated against models like HBM and CDM, with TVS diodes placed at exposed connectors and PCB layout following IEC 61000-4-2 contact and air-discharge levels (commonly tested to ±4kV contact / ±8kV air). On the factory side, an ESD-safe line means wrist straps, ionizers, and verified surface resistance, not just a sticker on the door.
ESD protection combines circuit-level design (TVS diodes, proper grounding, layout) with factory handling controls. The common pitfall is approving a design that passes lab ESD testing but is then assembled on a line with no ESD controls, reintroducing damage during production.
Wiki (1)
FAQ
What ESD standard do electronics need to pass for CE?
IEC 61000-4-2 is the immunity standard referenced under the EMC Directive for CE marking. Typical pass criteria are ±4kV contact discharge and ±8kV air discharge, though stricter levels apply to industrial and medical products.
How do I confirm a Chinese factory is actually ESD-safe?
Ask for surface resistance test logs, photos of wrist-strap testers and ionizers in use, and ESD flooring certification. During an audit we measure resistance on workbenches and verify operators are actually grounded, since the equipment is often present but unused.
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