Electrostatic Discharge

MOS (Metal-Oxide-Semiconductor) components can be damaged by Electrostatic Discharge (ESD). Other components can also be damaged by ESD. Components susceptible to damage from ESD are usually marked with a warning label as shown :

ESD Handling Precautions

  • Observe the following precautions when handling components susceptible to damage from ESD:
  • Store components in original packages, electrically conductive containers of conductive plastic foam.
  • Do not touch leads or pins
  • Discharge the static charge on you body, before touching components, by touching a grounded metal surface (cabinet, appliance, etc.). Preferably use an antistatic wrist strap connected to a grounded metal surface via a protective resistor (usually 1Mohm).
  • Place components on an aluminium foil sheet or tray or on conductive foam after removing them from their containers prior to installing them. It is advisable to place the component containers on the grounded surface to equalise potentials before removing device.
  • Do not slide components across a workbench or other surface
  • Keep static-generating materials (e.g. plastic, cellophane, sweet wrappers, paper, cardboard, etc.) away from the work area.
  • Never allow clothing to make contact with components.
  • Never install or remove ESD-Sensitive components in a circuit when power is applied.