Wireless Wrist Straps…Still Don’t Work

Interesting article! You can find Desco Wrist Straps at PAC, browse them all HERE.

Desco Blog

The ESD Association’s  Resistance-to-Ground (Rtg) requirement for an operator wearing a wrist strap is < 3.5 X 107 ohms (ANSI/ESD S20.20) .  A wireless wrist strap will never meet this requirement.

Wireless wrist straps claim to work by “making (a) body’s static electricity to discharge through discharge box.” Assuming that an operator was tribocharged to 10 KiloVolt and wearing the “wireless” wrist strap, it would take many hours (days even depending on the ambient relative humidity) to get you below 5 KiloVolt, never the less 10 Volts. Most (if not all) of the charge reduction would be due to natural recombination of the charges on your skin (and now metal casing of your “wireless” wrist strap) with the air molecules and the natural conductance of the air through water vapor content (relative humidity).

You could get the same effect of a wireless wrist strap by cutting your hair to…

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