• Desco
  • EMIT
  • ESD Systems.com
  • Menda Pump
  • Menda-ID
  • Protektive Pak
  • SCS
  • Smart Clock
  • Special Team
  • Statguard Flooring

Your ESD Flooring Solutions Provider
000 Checkout

Added to your cart

You do not have any items in your shopping cart at this time.
View All cart items

  Shop from our other Desco
  Industries websites:


United Kingdom


Questions And Answers

# List All Questions Search List by Category
Question The answer to question 6 says that if the operator, ESD mat, etc. are at the same potential, there will be no opportunity for an ESD event. My question is, if the mat was hard ground and the operator had a 1 Megohm resistor in the wrist strap to ground, then there is a potential for damage, correct? - Jim, Dallas, TX
Answer Not necessarily, but you are right that when current passes through a 1 Megohm resistor that there is a potential difference between either end of the resistor. The key in ESD control is to eliminate the charge on the body or other conductor within a safe discharge time. If the discharge time is 10 milliseconds, then there is a potential difference between the ends of a 1 Megohm resistor from 0 seconds to 0.01 seconds. Typical body movement is about 500 milliseconds (0.5 s), so by the time your hand reaches the sensitive device, you have already dissipated that potential to 0 volts with 490 milliseconds to spare.
Related Categories:
If you have found this Q/A useful, please rate it based on its helpfulness.
Rating Rating Rating Rating Rating
This question has been rated: 94%94%94%94%94%94%
(94% at 7 Ratings)