Measure: Indicate surface voltage and polarity of objects. Control: Insulators must be identified at an ESD work area and must meet the guidelines in the ESDA’s ESD Control Program Handbook-ESD TR20.20. Non-Process Essential Insulators If items that can charge to 125 volts or more*, then one of the following will be used: Remove the item…
Most people notice a difference in the ability to generate static electricity when the air gets dryer (the % RH decreases). As an example, walking across a carpet can yield a charge of 35kV at 10% RH [very dry air], but will drop significantly to 7.5kV at 55% RH. In an electronics manufacturing environment lower…
The 37th Annual EOS/ESD Symposium and Exhibits will be held at the Peppermill Resort Hotel, Reno, Nevada. Desco has been a part of the ESD Symposium for nearly 30 years. Desco employees have volunteered their time to be a part of the ESD Association’s standards meetings, working groups, and other functions at the annual symposium.…
We are regularly asked if paper is OK in the ESD Protected Area or at an ESD workstation. Regular paper is insulative but tends to be low charging because it is hygroscopic (readily absorbs moisture). The primary concern with paper is placing ESD sensitive items on the paper interfering with the path-to-ground of the grounded ESD mat. Best practice…
To obtain technical information and guidance on ESD control, there are a number of sources, many available at no charge. The ESD Association sells most of their documents, but a number are available as complimentary downloads. Per ANSI/ESD S20.20, Compliance Verification of ESD Protected Area’s (EPA) ESD control items is to be per ESD TR53;…
Written by: Gene Felder, Corporate Product Manager What is the ESD control requirements for battery and pneumatic powered hand tools? From ESD Handbook ESD TR20.20 section 5.5.2.2 “Battery powered and pneumatic hand tools while being held should have a resistance to ground of less than 1 x 10E12 ohms.” If tool’s housing is conductive or…
Read more ESD Control and Battery and Pneumatic Powered Hand Tools