ESD Control Items Required in an EPA

ESD control items are necessary in an ESD Protected Area (EPA) to minimize damage to sensitive electronic components. Knowing what items are required might be overwhelming, but fear not, we've got you covered!

ESD control items are selected based on the 3 key principles:

  1. Ground all conductors, including people
  2. Remove unnecessary insulators, or neutralize charges on essential insulators
  3. Place ESD-sensitive devices in shielding packaging

Personnel Grounding

The most common personnel grounding device used and required for personnel who are sitting. It helps to disperse static electricity generated from a person and reduce the chances of static electricity buildup once it has been secured to the wrist and connected to the earth bonding point

Check out Hakko's wrist strap and tester here 

A standing, or mobile worker can be grounded using an ESD conforming shoes made from PU/PVC raw materials or ESD heel grounders on both feet to ensure that there is a path to ground from the operator to the floor

Check out Hakko's antistatic shoe tester here

A standing, or mobile worker can be grounded using anti-static floor mats on top of a conductive work surface or by using a ground cord connected to the workstation’s common point ground. This prevents ESD from building up and discharging into the environment which could be destructive to electronic devices and people

Check out Vessel's working mats here

 

Neutralize Insulators

A hand-held device for precise elimination of static, dust, and contaminants from a variety of surfaces and parts

Check out Vessel's ionizing guns here

A self-contained air blower that reduces particle cling and eliminates static build up from products and equipment across a larger area

Check out Vessel's ionizing fans here

Instant cleaning for assembled parts in an enclosed space to eliminate static electricity and prevent dust from spreading to working areas

Check out Vessel's parts cleaner here

 

Shielding

A conductive antistatic bag that is manufactured with a layer of conductive metal, often aluminum, and a dielectric layer of plastic covered in a static dissipative coating. This creates a shield and a non-conductive barrier known as a Faraday cage effect, protecting sensitive electronic devices against ESD damage outside an EPA.

 

With these ESD control items, you can now create an EPA! However, it does not end here. Another essential step is to regularly evaluate the effectiveness of the ESD control, which may be done by measuring voltage, current as well as polarity of the items and surfaces in the area.

 

Measuring Effectiveness of ESD Control

A hand-held device that measures the static charges present on objects and surfaces, as well as ion balance on ionizer. Wherever electrostatic charges accumulate, they can be detected by the presence of an associated electric field

Check out Vessel's electrostatic field meter here

It measures the ability of a material to conduct electricity, which include floor, mat, desk, and chair. A company’s compliance verification plan should include periodic checks of surfaces measuring Resistance Point-to-Point (Rp-p) and Resistance-to-Ground (Rg)

Check out Vessel's surface resistance checker here

Congratulations, your EPA is now complete!