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ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS
Static electricity can damage electronic circuitry, particularly low voltage components
such as the integrated circuits commonly used throughout the electronics industry.
Therefore, procedures have been adopted industry-wide which make it possible to avoid
the sometimes invisible damage caused by electrostatic discharge (ESD) during the
handling, shipping, and storage of electronic modules and components. Siemens
Industry, Inc. has instituted these practices at its manufacturing facility and encourages
its customers to adopt them as well to lessen the likelihood of equipment damage in the
field due to ESD. Some of the basic protective practices include the following:
•Ground yourself before touching card cages, assemblies, modules, or components.
•Remove power from card cages and assemblies before removing or installing modules.
•Remove circuit boards (modules) from card cages by the ejector lever only. If an ejector
lever is not provided, grasp the edge of the circuit board but avoid touching circuit traces
or components.
•Handle circuit boards by the edges only.
•Never physically touch circuit board or connector contact fingers or allow these fingers to
come in contact with an insulator (e.g., plastic, rubber, etc.).
•When not in use, place circuit boards in approved static-shielding bags, contact fingers
first. Remove circuit boards from static-shielding bags by grasping the ejector lever or
the edge of the board only. Each bag should include a caution label on the outside
indicating static-sensitive contents.
•Cover workbench surfaces used for repair of electronic equipment with static dissipative
workbench matting.
•Use integrated circuit extractor/inserter tools designed to remove and install electrostatic-
sensitive integrated circuit devices such as PROM's (OK Industries, Inc., Model EX-2
Extractor and Model MOS-40 Inserter (or equivalent) are highly recommended).
•Utilize only anti-static cushioning material in equipment shipping and storage containers.
For information concerning ESD material applications, please contact the Technical
Support Staff at 1-800-793-7233. ESD Awareness Classes and additional ESD product
information are also available through the Technical Support Staff.
COM-00-21-03
Version No.: A
xiii
OCTOBER 2021
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