electricity is an electric charge caused by an imbalance of electrons on
the surface of a material. It is most commonly caused by the contact and
separation of materials. The area of contact, the speed of separation,
relative humidity and other factors determine the amount of charge created
in this process.
example of this occurrence would be a person walking across the floor.
Static electricity is generated as their shoe soles contact and separate
from the floor surface. The amount of static electricity generated will
increase due to the size of the sole surface, lower humidity and increased
speed of movement.
shock we receive upon touching another object is the transfer of the
static charge or balancing of our charge to that of the object. This
transfer is called Electrostatic Discharge or ESD.
all materials including water and dirt particles in the air are subject to
this occurrence. The charge that is created, where it goes and how quickly
is dependent on the materials characteristics and that of the materials it
comes in contact with.
are three basic types of Electrostatic Discharge (ESD).
ESD to a device
from a device
ESD to a device
A person walking generates a static charge then touches a device
causing a transfer of the electrostatic charge. A similar occurrence can
happen when an electro statically charged device is brought in contact
with another object.
from a device
Automated part movements within a device can generate an electrostatic
charge, which will discharge when the device is brought in contact with
Whenever an object becomes electro statically charged there is an
electrostatic field associated with that charge. If a device is placed in
that field, a charge may be induced on it.
If the device is momentarily grounded while within that field a
transfer of charge from the device will occur.
are two categories of damage that an ESD can create.
a complete functional breakdown of a device.
Defect a partial degrading of the device that will down grade its
productivity and longevity.
we cannot eliminate the generation of static in the work place, it is
necessary to safely dissipate or neutralize electrostatic charges that do
occur. This can be accomplished by proper grounding in conjunction with
the use of Conductive or Anti-Static
are rated as Conductive if their surface resistivity is 101
ohm, Anti-Static (Static Dissipative) 105
and Non-Conductive (Insulator) higher than 1012
The fastest neutralization of ESD being 101
ohm and the slowest is jus under 1012
have a low electrical resistance which allows ESD to flow across its
surface. When attached to an earth grounding point the ESD will flow to
ground and the excess charge on the mat and individual will be
have a higher electrical resistance than conductive mats. Like conductive
mats they will allow ESD to flow across its surface but in at a slower
rate. This slower neutralization of ESD prevents damage to microcircuit
devices which cannot tolerate a sudden flow of static charge from the
device to a grounded mat.
ohm or higher) prevent the flow of ESD across its surface. These mats are
used in high voltage environments where the movement of electrical charges
is not desired. In this case
the movement or attraction of electricity could be life threatening.
is important to note that an ungrounded Conductive or Anti-Static Mat will
retain an ESD and transfer the charge to the next object it comes in
is also recommended that all devices, Conductive and Anti-Static Mats be
grounded to the same common point ground. This essentially brings all
components to the same electrical potential.
the proper type of ESD neutralizing mat is determined by the following
of Neutralization For most applications anti-static mats that
neutralize ESD in the range of 105
ohm will effectively handle most static situations in the work
environment. Dissipation of static electric charges will occur at a rapid
but controlled rate.
This addresses other criteria such as anti-fatigue, slip resistant and
Takes into consideration the type of floor the mat will be placed on,
carpeted or hard surface. Use of the wrong type of mat on a carpeted floor
can create a trip hazard or a mat that is constantly moving. Most rubber
and vinyl Conductive and Anti-Static Mats will not withstand the use of
chairs or carts. The weight plus the action of the wheels will cause the
mats to move and prematurely breakdown. Only static control mats
specifically designed for use on carpeting or under chairs should be used
for these situations.
The most expensive mat may not be the best solution to the problem.
Conductive mats, the most expensive, can damage devices containing
microcircuits by draining static charges too rapidly.
& Shoe Straps - These items are designed to provide the highest level
of contact with an individual and a static dissipative control device
(floor mat, work surface, ground plug, etc.) They serve strictly as
a channel for removing static electricity. Simply wearing a strap
accomplishes nothing unless proper contact to a grounded static removal
device or object is made.
the proper product for a situation can usually be determined by comparing
your requirements to the information we have listed. While it would
be wonderful to be able to purchase one product to eliminate every static
electricity problem that is not the case. Every static problem is
unique because of numerous factors, many of which are distinct to each
individual problem. The best method of dealing with static
electricity problems is to implement solutions that are least intrusive to
individuals such as a floor mat. Often this will completely solve
the problem but sometimes it only decreases it. It is may be
necessary to institute additional remedies in the order of least intrusive
too most intrusive (work surface to heel grounders to wrist straps).
in doubt give us a call (877-511-3628 lower-48 or 941-778-0974 outside the
lower-48). We can recommend a variety of solutions to every problem.