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Avoid contact with pins, leads, or circuitry.
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Place reusable electrostatic-sensitive parts from assemblies in protective packaging or conductive foam.
Personal grounding methods and equipment
Use the following equipment to prevent static electricity damage to electronic components:
Wrist straps are flexible straps with a maximum of one-megohm ± 10% resistance in the ground cords. To
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provide proper ground, a strap must be worn snug against bare skin. The ground cord must be connected
and fit snugly into the banana plug connector on the grounding mat or workstation.
Heel straps/Toe straps/Boot straps can be used at standing workstations and are compatible with most
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types of shoes or boots. On conductive floors or dissipative floor mats, use them on both feet with a
maximum of one-megohm ± 10% resistance between the operator and ground.
Table 4-2
Static shielding protection levels
Method
Antistatic plastic
Carbon-loaded plastic
Metallized laminate
Grounding the work area
To prevent static damage at the work area, use the following precautions:
Cover the work surface with approved static-dissipative material. Provide a wrist strap connected to the
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work surface and properly grounded tools and equipment.
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Use static-dissipative mats, foot straps, or air ionizers to give added protection.
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Handle electrostatic sensitive components, parts, and assemblies by the case or PCB laminate. Handle
them only at static-free work areas.
Turn off power and input signals before inserting and removing connectors or test equipment.
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Use fixtures made of static-safe materials when fixtures must directly contact dissipative surfaces.
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Keep work area free of nonconductive materials such as ordinary plastic assembly aids and Styrofoam.
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Use field service tools, such as cutters, screwdrivers, and vacuums, that are conductive.
Recommended materials and equipment
Materials and equipment that are recommended for use in preventing static electricity include:
Antistatic tape
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Antistatic smocks, aprons, or sleeve protectors
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Conductive bins and other assembly or soldering aids
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Conductive foam
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Conductive tabletop workstations with ground cord of one-megohm +/- 10% resistance
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Static-dissipative table or floor mats with hard tie to ground
Static shielding protection levels
Voltage
1,500
7,500
15,000
Electrostatic discharge information
25
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