●Always be properly grounded when touching a sensitive component or assembly.
●Avoid contact with pins, leads, or circuitry.
●Place reusable
Personal Grounding Methods and Equipment
Use the following equipment to prevent static electricity damage to equipment:
●Wrist straps are flexible straps with a maximum of
●Heel straps/Toe straps/Boot straps can be used at standing workstations and are compatible with most types of shoes or boots. On conductive floors or dissipative floor mats, use them on both feet with a maximum of
| Static Shielding Protection Levels |
|
|
Method | Voltage |
|
|
Antistatic plastic | 1,500 |
7,500 | |
Metallized laminate | 15,000 |
|
|
Grounding the Work Area
To prevent static damage at the work area, use the following precautions:
●Cover the work surface with approved
●Use
●Handle electrostatic sensitive components, parts, and assemblies by the case or PCB laminate. Handle them only at
●Turn off power and input signals before inserting and removing connectors or test equipment.
●Use fixtures made of
●Keep work area free of nonconductive materials such as ordinary plastic assembly aids and Styrofoam.
●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
●Antistatic smocks, aprons, or sleeve protectors
16 Chapter 4 Identifying the Chassis, Routine Care, and Disassembly Preparation