|
Hand-Held ESD SAFE 2D READER
1. ESD Electrostatic Discharge.Quick
charge transfer between objects with different
electrostatic potentials caused either by
direct contact or an electrostatic field.
2. ESDS Electrostatic
discharge sensitive devices. Devices that
can be damaged by Electrostatic discharge.
3. EPA ESD protected area.
Area where the ESDS can be managed safely.
ESD phenomena are substantially avoided.
4. Surface Resistance
The ratio between the D.C. voltage applied
to two electrodes on a test surface and
the current between them.
5. Surface Resistivity The
equivalent of the Surface Resistance, in
this case measured on a rectangular surface,
with the electrodes positioned on two opposite
sides.
6. Conductive Electrostatic Material
which has a surface resistivity between
Material 103 ohm and 106 ohm.
7. Dissipative Electrostatic Material
which has a surface resistivity between
Material 106 ohm and 1012 ohm.
8. Insulant Electrostatic Material
which has a surface resistivity over Material
1012 ohm.
9. Hard Grounding A galvanic
Earth connection through a highly conductive
path which could lead to excessively high
or rapid charging/discharging phenomena.
To resolve the situation, one must increase
the resistance of the overall grounding
path.
|