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4.
ELECTROSTATIC-SENSITIVE DEVICES
Electrostatic-Sensitivity
WARNING
Introduction
An electrostatic-sensitive device (ESD) can withstand voltage spikes
4.1
of only 10 to 100 volts and can be damaged or effectively destroyed by a
discharge that might go unnoticed by a technician. Some devices have built-in
protection. However, because this protection is effective only against the lower
levels of electrostatic charges, a false sense of security often prevails.
Possibility of equipment damage. Common plastic, white foam,
cellophane, and masking adhesive tapes must not come in contact with
ESDs or their packaging.
Common plastics (synthetic insulating materials), clothing, and paper
4.2
or cardboard are the most common sources of static charges.
Observe special precautions when the ESD sign is displayed. See
4.3
figure 4-3.
Figure 4-3. Electrostatic-Sensitive Device (ESD) Sign
The following items are examples of ESDs:
4.4
•
MOS (Metal Oxide Semiconductor) capacitors, transistors, Integrated
Circuits (ICs)
•
CMOS (Complementary Metal Oxide Semiconductor) transistors, ICs
•
JFET (Junction Field Effect Transistors)
•
IGFET (Insulated Gate Field Effect Transistors)
Issue 01, September 2007
677-0356-1
071105
3EM13853AF
1-13
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