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Warning symbol denoting a device's susceptibilty to electrostatic discharge.
An electrostatic sensitive device (often abbreviated ESD) is any component (primarily electrical) which can be damaged by common static charges which build up on people, tools, and other non-conductors or semiconductors. Common electrostatic devices include:
- CMOS chips
- Computer cards
- TTL chips
- Integrated circuits (generally)
- Laser diodes
ESD-safe Working
Often an ESD-safe foam or ESD-safe bag are required for transporting such components. When working with them, a technician will often use a grounding mat or other grounding tool to keep from damaging the equipment. Technican may also wear antistatic garments or antistatic wrist strap There are several kinds of ESD protective materials:
- Conductive: Materials with a resistance of between 1kΩ and 1MΩ
- Dissipative: Materials with a resistance of between 1MΩ and 1TΩ
- Shielding: Materials that attenuate current and electrical fields
- Low-charging or Anti-static: Materials that limit the builup of charge by prevention of triboelectric effects through physical separation or by selecting materials that do not build up charge easily.
External links
- ESD advice from Intel
- ESD advice from PC World
- [1] ESD Journal's ESD Control Standards
