Home
Go backClick here to return to your last page

 

 

CONDUCTIVE VERSUS INSULATIVE

ESD Material Conductivity

 

The higher the electrical conductivity of the grounding system the faster electrons are moved to ground. If electrons are moved to ground too quickly it can damage components.  If a flooring material is too conductive it can present a safety hazard for the technicians. The more insulative the material is the slower electrons are moved to ground. Moving the electrons to ground too slowly easily allows a static charge to accumulate drastically increasing the failure rate of electronic components. Defining the electrical resistance of a flooring material is achieved using specialty electrodes and an instrument similar to our RT-1000.

 

CONDUCTIVE

<1.0E01:

(<10 ohms)

Copper, Steel Etc.

Water

Note: Too conductive! This range presents potential safety hazards AND eliminating static too quickly can be nearly as bad as not eliminating it in the first place!

1.0E02:

(100 ohms)

1.0E03:

(1,000 ohms), (1K ohm)

1.0E04:

(10,000 ohms) (10K Ohms)

 

ESD (Static Conductive) Flooring = more than 1.0E04 and less than 1.0E06

 

 

 

 

 <1.0E06 (1 Meg Ohm) Max (Technician, heel grounders or conductive shoes and ESD Conductive flooring MEETS DoD 4145-26 M (when tested at 500 volts. Note minimum resistance levels apply. See standard for full details

 

 

STATIC CONDUCTIVE = More than 1.0E04 and less than 1.0E06.

 

Optimum, charge decay, perfect for ESD Flooring and for meeting 97.1

 

1.0E05

(100,000 ohms) (100K Ohms)

2.30E05 (example)

(230,000 ohms), (230 K Ohms)

5.50E05 (example)

(550,000 ohms), (550 K Ohms)

<1.0E06

(<1,000,000 ohms), (<1 Meg Ohm)

>1.0E06

(>1,000,000 ohms,  (1 Meg Ohm)

ESD (Static Dissipative) ESD Flooring and static dissipative table top matting = more than 1.0E06 and less than 1.0E09

 

STATIC DISSIPATIVE = More than 1.0E06 and less than 1.0E09

 

Slower more controlled charge decay, perfect for ESD table top mats etc.

 

 

1.0E07

(10,000,000 ohms), (10 Meg Ohms)

3.5E07

3,500,000 ohms) (35 K ohms)

<3.5E07 Technician, heel grounders and ESD Conductive flooring MEETS STM ESD 97.1

EXAMPLE: 7.90E07

(7,900,000), (7,900 k ohms or 7.9 Meg Ohms)

 

1.0E08

(100,000,000 ohms)

 

LESS THAN 1.0E09

(<1,000,000,000 ohms)

<1.0E09 when tested using 100 volts and to test method S7.1 = Passing range for a static dissipative floor. If the charge generation is less than 100 volts when tested to ANSI ESD 97.2 the floor will pass ANSI ESD S20.20-2014.
EXAMPLE: 7.2E09 is the same as 7,200,000,000 ohms or 7.2 GIG OHMS  

MORE THAN 1.0E09

(>1,000,000,000 ohms)

STATIC INSULATIVE: More than 1.0E09 for flooring (the flooring will fail ANSI ESD S20.20-2014. Smocks used for shielding (static control garments) may have a higher resistance and still pass. See S20.20-2014 for details

 

 

 

 

 

>1.0E10

(10,000,000,000 ohms)

Standard VCT and epoxy flooring

>1.0E11

(100,000,000,000 ohms)

      Switchboard matting, Plexiglas, etc Minimal to Zero Charge decay

1.0E12

(1,000,000,000,000 ohms)

 

INSULATIVE

Notes:

p (pico)

10-12

n (nano)

10-9

(micro)

10-6

m (milli)

10-3

k (kilo)

103
(1000)

M (mega)

106
(1,000,000) (one million) (1.0E06)

G (giga)

109
(1,000,000,000)  (one billion) (1.0E09)

T (tera)

1012
(1,000,000,000,000) (one trillion) (1.0E12)

 

 

 CLICK HERE TO CONTACT UNITED SCP