ASTM D5077-90(2003)
(Terminology)Standard Terminology Relating to Electrostatic Discharge (ESD) Packaging Materials
Standard Terminology Relating to Electrostatic Discharge (ESD) Packaging Materials
SCOPE
1.1 The terms and definitions in this standard are related to Electrostatic Discharge (ESD) Packaging Materials and ESD Protective Materials.
General Information
Relations
Standards Content (Sample)
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Designation:D5077–90(Reapproved 2003)
Standard Terminology Relating to
Electrostatic Discharge (ESD) Packaging Materials
This standard is issued under the fixed designation D 5077; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope dielectric breakdown—a threshold effect in a dielectric me-
dium where, at some electric field strength across the
1.1 The terms and definitions in this standard are related to
medium, bound electrons become unbound and travel
Electrostatic Discharge (ESD) Packaging Materials and ESD
through the medium as a current. In solid media, the region
Protective Materials.
of the current path is permanently damaged. The unit of
2. Referenced Documents measurement is usually volts per unit of thickness.
electrically continuous surface—a surface that is electrically
2.1 ASTM Standards:
conductiveinthatcurrentcanbepassedatanappliedvoltage
D 996 Terminology Relating to Packaging and Distribution
between any two points of its physical surface.
Environments
electrical overstress (EOS)—overstress which may be due to
2.2 EIA Standard:
ESD or the operation of items beyond their electrical
EIA-541 Packaging Material Standards for ESD, Sensitive
specifications.
Items
electromagnetic shield—a screen or other housing placed
3. Terminology
around a device or circuit to reduce the effects on them from
both electric and magnetic fields.
antistatic agent—a chemical compound which, when impreg-
electrostatic discharge—the transfer of electrostatic charge
nated or formulated into or topically applied to a primary
between bodies at different electrostatic potentials.
material or substrate, gives the primary material antistatic
electrostatic discharge (ESD) protective—a property of ma-
properties. See antistatic property.
terials capable of one or more of the following:
antistatic property—the prevention of triboelectric charge
generation by effectively minimizing the production of a
preventing the generation of static electricity.
static charge when materials are separated from another
surface.
dissipating electrostatic changes over its surface or volume.
DISCUSSION—The forword of EIA-541 states, “8Antistatic’ no longer
refers to a resistivity range . 8Antistatic’ refers to a material’s ability
providing shielding from ESD or electrostatic fields.
to resist triboelectric charge generation. A material’s antistatic propen-
electrostaticdischargesensitive(ESDS)—apropertyofitems
sity depends upon the nature of the material itself and the material with
in which they are inherently sensitive (ESDS) susceptible to
which it is in contact along with the means of surface separation. The
antistatic property is not a dependent function of material resistivity.
either catastrophic failure or latent damage when exposed to
Material resistivity is an intrinsic property used to define its degree of
sources of ESD. Items are often categorized as to their levels
conductivity without regard to other materials.”
of sensitivity but in all cases require some means of ESD
protective packaging and handling.
conductor—a substance or body that allows a flow of electric
electrostatic shield—a barrier or enclosure that prevents the
current to pass continuously along it or through it when a
penetration of an electrostatic field.
sufficient voltage is applied across any two points.
DISCUSSION—An electrostatic shield may not offer much protection
against the effects of an electromagnetic field. Electromagnetic shields,
however, are good electrostatic shields.
This terminology is under the jurisdiction of ASTM Committee D10 on
Packaging and is the direct responsibility of
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