EDSTRG40DILAX datasheet(60/78 Pages) TI

60 / 78 page

ESD LABELS AND SIGNS IN WORK AREAS

3–6

POST OFFICE BOX 1443

• HOUSTON, TEXAS 77251–1443

ESD labels and signs in work areas

ESD caution signs at workstations and labels on static-sensitive parts and containers must be consistent in

color, symbols class, voltage-sensitivity identification, and appropriate instructions. Signs must be posted at all

workstations performing operations with static-sensitive items. These signs must contain the following

information or its equivalent.

CAUTION

STATIC CAN DAMAGE COMPONENTS

Do not handle ESD-sensitive items unless grounding wrist strap

is properly worn and grounded. Do not let clothing or plain plastic

materials contact or come in close proximity to ESD-sensitive

items.

Labels must be affixed to all containers containing static-sensitive items at a place readily visible and proper

for the intended purpose. Additionally, labels must be consistently placed on containers and packages at a

standard location to eliminate mishandling. Use only QC-accepted and approved signs and labels to identify

static-sensitive products and work areas. The use of ESD signs and labels and their information content must

be the responsibility of the area supervisor to ensure consistency and compatibility throughout the

static-sensitive routing.

relative humidity control

Since relative humidity has a significant impact on the generation of static electricity, when possible, the work

area must be maintained within the 40%–60% relative humidity range.

preparation for working at static-free workstation

A workstation with a static dissipative work surface connected to ground through a 1 M

Ω ± 10% resistor, a

grounding wrist strap with the ground wire connected to the conductive work surface, and an ionizer constitute

a static-free workstation (Figure 1). An operator is grounded properly when the wrist strap is in snug (no slack)

contact with the bare skin, usually positioned on the left wrist for a right-handed operator. The wrist strap must

be worn the entire time an operator is at a static-free workstation. The operator must touch the grounded bench

top first before handling static-sensitive items. This precaution must be observed in addition to wearing the

grounding wrist strap. If possible, the operator must avoid touching leads or contacts even though he or she

is grounded.

CAUTION

Personnel must never be attached to a static-free workstation

without a properly worn and grounded wrist strap (the presence

of the 1 M

Ω ± 10% series resistor in the ground wire).

An operator’s clothing must never make contact or come in close proximity with static-sensitive items. Operators

must be especially careful to prevent any static-sensitive items (being handled) from touching their clothing.

Long sleeves must be rolled up or covered with antistatic sleeve protector banded to the bare wrist, which must

“cage” the sleeve at least as far up as the elbow. Only antistatic finger cots can be used when handling

static-sensitive items.

EDSTRG40DILAX Datasheet(PDF) 60 Page - Texas Instruments

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