ESD Corner
April 2007
Issue 2, Volume 10
ESD Technical eNewsletter
Wrist Straps for ESD Control

ESD Wrist Straps are the most common personal grounding device used in the Electrostatic Discharge Control or ESD Control industry. Why use a Wrist Strap? Since ungrounded people are often the biggest cause of ESD damage, wrist straps are the first line of defense in ESD control. Seated operators must wear wrist straps. All operators that handle un-packaged ESD sensitive items must be grounded.

"All personnel shall be bonded or electrically connected to ground or contrived ground when handling ESD sensitive items. When personnel are seated at ESD protective workstations, they shall be connected to the common point via a wrist strap system." [ANSI/ESD S20.20 section Personnel Grounding Requirement]

The purpose of a wrist strap is to provide a groundable path for charges that are generated by workers in a static control or ESD protective area or field service. A wrist strap is made up of two components including a wrist band and a coiled cord.

Read More HERE

Jewel® Premium Dual-Wire Wrist Straps and
Coil Cords
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ESD Q & A Corner

Q: How do you measure ESD level on carts that
use drag chains to ESD protective flooring? What
is acceptable industry resistance measurement
in Ohms scale?

How can products on carts be ESD protected?
A: “Per ANSI/ESD S20.20-2007 Table 3, the required limits of Mobile Equipment (Working Surfaces) to be < 1 x 10E9 ohms resistance to ground....”
Click Here To See The Answer
Q: What is the difference between a conductive mat, a static dissipative mat and an insulative mat in terms of intended use and applications? Is conductivity the only qualification for each type?
A: “The first level difference is the mats ability to conduct a current which is depicted...”
Click Here To See The Answer
Find more ESD Q&As HERE
Hot New Items

Type DP Diamond Plate

  • Exceeds ANSI/ESD S20.20 minimum technical requirement range of <1 x 10E9 ohms for ESD floor
  • Suitable as floor component in ESD STM 97.1 floor-footwear system
  • RTT: 10E3 - 10E5 Ohms per ANSI/ESD S7.1
  • Made in America
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