The best known ESD cautionary symbol consists of a yellow hand in the act of reaching, deleted by a bar, all within a black triangle. It is intended to identify devices and assemblies that are susceptible to ESD. It is now correctly used as follows:

• on individual components and related documents to state: "this device is static sensitive: do not touch without appropriate precautions"
• on assemblies and related documents to state "includes static sensitive components: take appropriate precautions"
• as part of a sign identifying an area where sensitive devices are handled, to warn all who approach it that precautions are required.

Susceptibility

Protection

In its standard, ESD S8.1-1993, the ESD Association introduced a new symbol. It is similar to the one above left but without the bar and with an added arc. It is intended to identify ESD protective materials. This new symbol is shown above right and is now included in IEC 61340-5-1.

This symbol should appear on ESD protective products such as shielding bags and boxes. The asterisk should be replaced with a letter indicating the primary function of the item:

C - conductive, D - dissipative, L - low charging (previously known as astatic or antistatic), and S for shielding.

Antistatic: Packaging which minimizes charge generation by separation or rubbing with other materials. Also known as 'low charging'
ESD shielding: A barrier or enclosure that limits the passage of current and attenuates the energy resulting from an electrostatic discharge
Electrostatic conductive: Packaging with a surface resistance � 1x103 ohm and < 1x106 ohm
Electrostatic dissipative: Packaging with a surface resistance � 1x106 ohm and < 1x1012 ohm
Insulative: Packaging with a surface resistance � 1x1012 ohm. Not suitable for use in an EPA

On equipment suitable for use inside an EPA, such as field service mats, trolleys and garments. the asterisk should be replaced with EPA.