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Untitled Document
ESD Training
WHAT
IS ELECTROSTSTIC DISCHARGE (ESD)?
IT'S THE SUDDEN TRANSFER (DISCHARGE) OFELECTRICITY
FROM ONE OBJECT TO ANOTHER
ESD is commolny known
as "static electricity."
Some examples are :
*
Lightning.
*
The
"shock" you sometimes feel
in
the winter when you walk across
a carpet and touch a doorknob.
*
The
Sparks you sometimes see when undressing
in the dark.
ESD seems harmless,
but it can severely damage electronic components
and assemblies.
WHY
SHOULD I LEARN ABOUT ESD CONTROL?
BECAUSE
ESD IS ONE OF THE MOST SERIOUS PROBLEMS FACING THE
ELECTRONICS INDUSTRY TODAY.
ESD can result in :
*
Products
Failures
*
More
rejects - higher costs
*
Unhappy
customers.
Everyone benefits when ESD is controlled!
Product
quality can improve and costs can be kept down.
This can increase customer satisfaction -- and sales.
You can help prevent ESD!
WHAT
CAUSE ESD?
EVERY OBJECT CAN HOLD AN ELECTRICAL CHARGE.
THIS CHARGE IS EITHER:
POSITIVE
(+) OR NEGATIVE (-)
When
two objects rub or slide together or are separated,
they become charged.
When two objects with different charges come close
together, electrons can suddenly flow from one object
to the other.
This sudden flow of electrons is ESD!
ESD
IS MOST OFTEN CAUSED BY PEOPLE ! *
Your body easily becomes charged when you
move.
* your
skin, hair and body can store relatively large
amount of static electricity.
* You
can transfer (discharge) this electrical charge
to components or assemblies--causing ESD damage.
ESD
IS ALSO INCREASED BY:
*
Low relative humidity (dry air).
*
The use of synthetics, plastics and insulators
in work aread.
*
Your body easily becomes charged when you
move.
*
Bending, walking shifting or rolling in
a chair, on waxed floors or synthetic carpets.
HOW
IS ESD ABLE TO DAMAGE A COMPONENT OR ASSEMBLY?
Today's
components and assemblies
are
more efficient and smaller then ever
before.
They are also often much more delicate
ans sensitive to static electricity!
Even
a tiny transfer of electrical charge - one
that you can't see, hear or feel - is as demaging
as a bolt of lighting to some components and
assemblies.
Anyone
who works with electronic components
or assemblies can
cause ESD damage.
