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BENEFITS
-Permanent Static Dissipative
-Insensitive to environment
-Special Design for cleanroom application
APPLICATIONS
-Disc Drive Industries (MR & GMR Head)
-Semi - Conductor Industries
-Aero - Space Industries
STOCK AVAILIBILITY (FOR AIR)
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Inner
Diameter (mm)
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Outer
Diameter (mm)
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Standard Roll
(Meter)
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Part No.
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1.5
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3.0
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100
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ESD 015/030
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2.0
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4.0
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100
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ESD 020/040
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2.5
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4.0
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100
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ESD 025/040
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3.0
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5.0
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100
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ESD 030/050
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4.0
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6.0
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100
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ESD 040/060
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5.0
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8.0
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100
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ESD 050/080
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6.5
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10
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100
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ESD 065/100
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8.0
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12.0
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50
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ESD 080/120
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9.5
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12.7
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50
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ESD 095/127
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Decay time at end of tube
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0.8 to 1.3 seconds
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Decay time at center of tube
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0.5 to 1.2 seconds
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Float voltage observed
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0V to 3V
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Peel off voltage observed
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0V to 3V
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Surface Resistivity
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8*10 to the power of 8 (^8)
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PROCEDURES
OUTGASSING-Three samples of Spiral Coil were used and placed in an outgassing vessel at 85 Degree C. It was then flushed continually
for three hours at 50ml/min with grade 5 nitrogen. A carbotrap'B'/ carbotrap'C'; tube were then used to trap the outgassing
constituents after which analyzing using GC/MS with ATD.
FTIR / SILICONE OIL / HYDROCARBONS-The presence of silicone oil and hydrocarbons were extracted in solvent soluble residue
from one piece of 15.5" of ESD Bluish Spiral Coil. Both the inner and outer surfaces, a total of 121cm square, were rinsed
with 10ml of hexane and isopropanol by mixing a portion of 1 : 1 (v/v) of the solvent solution. A clean 30ml glass beaker
was used to collect the rinsate. The solvent solution was evaporated to dryness. Thereafter, FTIR / HATR was used to analyze
for the presence of silicone oil and hydrocarbons on any residue rinsed from the sample.
IONIC CONTAMINATION-A ESD Bluish Spiral Coil sample were divided into three sections to test for ionic contamination.
Three pre-clean glass beaker containing 10ml of de-ionized water was given one section of the spiral coil sample each and
then capped off to prevent evaporation. The glass beakers were then placed in an 80 Degree C oven. The water extract was then
analyzed using ion chromatography. A hand measured apparent surface area of 10.2cm square was used to calculate the results.
RESULTS
OUTGRASSING - Below are the data obtained from using the following chemicals
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COMPOUND
INDENTIFICATION
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Section 1
Sample
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Section 2
Sample
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Section 3
Sample
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Average
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BHT
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10 ug/g
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13 ug/g
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11 ug/g
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11 ug/g
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KETONES
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26 ug/g
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23 ug/g
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24 ug/g
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24 ug/g
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SILOXANE
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1 ug/g
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0 ug/g
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0 ug/g
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1 ug/g
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HYDROCARBON,OTHERS
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15 ug/g
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12 ug/g
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17 ug/g
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15 ug/g
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TOTAL
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52 ug/g
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48 ug/g
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52 ug/g
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51 ug/g
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FTIR/SILICONE OIL/HYDROCARBONS
- Below shown was obtain from the analyzed results on one section of the Spiral Coil
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Section 1
Sample
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Limits
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SILICONE OIL
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10
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As per customer's specification
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HYDROCARBONS
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160
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As per customer's specification
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Note:results for both the silicone oil and hydrocarbons are in nanograms/cm square surface area.
IONIC CONTAMINATION
The results tested as follows
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SAMPLE
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Section 1
Sample (ug/cm square)
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Section 2
Sample
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Section 3
Sample
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Average
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Limits
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AMMONIUM
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0.014
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0.014
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0.019
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0.016
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As Per Customer's Specification
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BROMIDE
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0.008
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0.008
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0.004
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0.007
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CALCIUM
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0.020
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0.020
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0.019
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0.020
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CHLORIDE
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0.007
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0.010
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0.014
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0.010
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FLURIDE
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0.031
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0.028
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0.030
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0.030
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MAGNESIUM
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0.001
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0.000
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0.001
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0.001
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NITRATE
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0.003
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0.002
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0.004
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0.003
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NITRITE
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0.000
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0.000
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0.000
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0.000
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PHOSPHATE
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0.075
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0.069
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0.071
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0.072
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POTASSIUM
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0.011
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0.012
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0.011
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0.011
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SODIUM
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0.155
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0.150
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0.147
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0.151
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SULFATE
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0.000
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0.003
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0.000
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0.001
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TOTAL SUM OF ANIONS
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0.325
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0.316
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0.320
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0.322
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ROHS FOR SPIRAL COIL
On analysis, the following results were obtain:-
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Test Parameter
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Digestion/Extraction
Method
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Analysis
Method
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Results,
ppm(w/w)
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Mercury (Hg)
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AC/RoHS/0010
Ver1.1/05 Wet Acid
Digestion (Microwave)
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CVAAS
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ND
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Lead (Pb)
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AC/RoHS/0007
Ver1.1/05 Dry Ashing
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ICP-AES
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ND
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Cadmium (Cd)
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AC/RoHS/0007
Ver1.1/05 Wet Acid
Digestion (Microwave)
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ICP-AES
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ND
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Hexavalent
Chromium (Cr 6+)
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AC/RoHS/0010
Ver1.1/05 EPA 3060A/
7196A (Modified)
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ND
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Polybrominated
Biphenyls (PBB)
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AC/RoHS/0012
Ver1.1/05
Microwave)
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GC-MS
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ND
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Polybrominated
Diphenyl Ethers
(PBDEs)
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AC/RoHS/0012
Ver1.1/05
(Microwave)
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GC-MS
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ND
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Remarks:
1)Sample was prepared as in AC/ROHS/0006 Ver1.0/05 and all the methods listed above are reference to the IEC 111/24/CD/Ed.1-
Procedure for determination of levels of regulated Substances in Electrotechnical Products.
2)CVAAS = Cold Vapour Atomic Absorption Spectrometry
ICP – AES = Inductively- Coupled Plasma – Atomic Emission Spectrometry
GC-MS = Gas Chromatography – Mass Spectrometry
3)The Method detection limits(MDL) for Lead, Cadmium, Polybrominated Biphenyls and Polybrominated Diphenyl Ethers = 1
ppm each
4)The Method detection limits(MDL) for Hexavalent Chromium = 2ppm
5)The Method detection limits(MDL) for Mercury = 0.5ppm
6)“ND” = Not detected (Less than or equal to 5ppm)
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