Issue 5 November 2000
[[YLL
363-206-208
About This Document
Lucent Technologies - Proprietary
See Notice on first page
Electrostatic Discharge ESD) Considerations
!
CAUTION:
Industry experience has shown that all integrated circuit packs can be damaged
by static electricity that builds up on work surfaces and personnel. The static
charges are produced by various charging effects of movement and contact with
other objects. Dry air allows greater static charges to accumulate. Higher poten-
tials are measured in areas with low relative humidity, but potentials high enough
to cause damage can occur anywhere.
In order to prevent damage by electrostatic discharge the following precautions should
be observed when handling circuit packs:
Assume all circuit packs contain solid state electronic components that can be
damaged by ESD.
When handling circuit packs (storing, inserting, removing, etc.) or when working
on the backplane, always wear a grounded wrist strap or wear a heel strap and
stand on a grounded, static dissipating floor mat. If a static dissipating floor mat
is used, be sure that it is clean to ensure a good discharge path.
Handle all circuit packs by the faceplate or latch and by the top and bottom outer-
most edges. Never touch the components, conductors, or connector pins.
Observe warning labels on bags and cartons. Whenever possible, do not remove
circuit packs from antistatic packaging until ready to insert them into slots.
If possible, open all circuit packs at a static safe work position, using properly
grounded wrist straps and static dissipating table mats. If a static dissipating floor
mat is used, be sure that it is clean to ensure a good discharge path.
Always store and transport circuit packs in static safe packaging. Shielding is not
required unless specified.
Keep all static generating materials such as food wrappers, plastics, and styro-
foam containers away from all circuit packs. Upon removal from bay, immediately
put circuit packs into static safe packages.
Whenever possible, maintain relative humidity above 20 percent.
Summary of Contents for DDM-2000 OC-12
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