EPA – Electrostatic Protected Area

EPA stands for Electrostatic Protected Area. It is a defined space where measures are in place to protect electronic components and assemblies susceptible to electrostatic discharge (ESD). An EPA can be a single workstation, a service bench or an entire production hall.

How an EPA works

Protection within an EPA involves limiting the generation and accumulation of electrostatic charge, dissipating it in a controlled manner and, where necessary, neutralising it through ionisation. Equipment and working procedures must work together to protect sensitive electronics during assembly, testing, repairs and handling.

What makes up an EPA

An EPA may include grounded work surfaces, ESD flooring, personnel grounding through wrist straps or a footwear–flooring system, ESD garments, suitable tools, packaging and ionisation. The equipment is selected according to the process and the sensitivity of the components being handled.

An effective EPA also requires clearly defined boundaries, working procedures, personnel training and regular verification of protective measures. Simply marking an area as an EPA or installing ESD equipment does not guarantee effective protection.

For more information on equipment, grounding and verification, see our article What is an EPA?