
Static Control Program Benefits:
- Cost benefits: A mid-1990 cost
estimate for ESD damage was in the $4,000,000,000 range
for the US Electronics Industry
- More
reliable products, lower scrap rate
- Greater
customer satisfaction
- Safety
in Explosive Environments & #13;
Ground Zero Specializes in all kinds
of ESD and Static Control Flooring
|
- Static Electricity
can be defined as an electrical charge at rest.
- ESD
is the transfer of static charges between bodies or objects
at different electrical potentials. This
may be caused by either direct contact or
by induction of an electrostatic field.
- Static
Charges are generated when two materials are rubbed
together. This term is called Triboelectric
Generation or Tribocharging
Factors that Influence Tribocharging:
- Intimacy of Contact Speed of Separation
- Conductivity of Materials
- Triboelectric Series Position
- Relative Humidity
How Do You Measure the Effect of Tribocharging
on a Person?
- BVG is the amount of static electricity accumulated on a body walking
across the floor as a result of tribocharging (as measured in volts).
- In relation to floors, it is the measurement of static electricity built
on the body walking across the floor.
Why is BVG Important?
ESD Incidents Can Cause:
- Damage Your Electronic Equipment
- Interruptions
in Productivity
- Unnecessary Safety Concerns for Safety
Engineers
- Sparks and/or Possibly Ignition
- Personnel
Discomfort
How Does Static Electricity Damage Your Products?
When a human body becomes charged and touches
an ESD sensitive device, it allows the body to discharge the static electricity
to an object of lower potential, which could be a component, a combustible or
other unwanted material or item, causing damage and possibly serious
injury depending on the environment.
A Charged body walks by a grounded table, work-surface or area with
an ESD sensitive device or material (without touching it) and the body's
charge travels to damage the component with direct contact.
What is Your Criteria for the Selection of
Static Control Flooring?
- Performance Characteristics (BVG)
- Physical Properties
(Durability)
- Aesthetics
- Repairability
- Relative Cost
Typical Electrostatic Voltages
| Means of Generation |
Electrostatic Voltage
|
| |
10 - 20%RH
|
65 -90% RH
|
| Walking on Carpet |
35,000
|
1,500
|
| Walking on Vinyl |
12,000
|
250
|
| Working at Bench |
6,000
|
100
|
| Poly Bag Picked up
at Bench |
20,000
|
1,200
|
| Work Chair Padded with Foam |
18,000
|
1,500
|
| Walking on Standard Epoxy Floor |
20,000
|
10,000
|
Walking on Ground Zero Floor
with Proper & #13;Footwear
|
<15
|
<15
|
|