WELCOME TO
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ESD DISSIPATIVE SPIRAL
COIL(ESD DISSIPATIVE SPIRAL WRAP)
BENEFITS
-Permanent Static Dissipative
-Insensitive to environment
-Special design for cleanroom application
APPLICATIONS
-To wrap cable or wire inside cleanroom
-To coil pen inside cleanroom
-Other
SPECIFICATION
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Decay time at end
of tube |
0.8 to 1.3 seconds |
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Decay time at
centre of tube |
0.5 to 1.2 seconds |
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Float voltage
observed |
0V to 3V |
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Peel off voltage
observed |
0V to 3V |
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Surface Resistivity |
8 * 10 to the power of 8 |
PROCEDURES
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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:
OUTGASSING – Below are the data obtained from using the following chemical
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COMPOUND
INDENTIFICATION |
Section 1 sample |
Section 2 Sample |
Section 3 Sample |
Average |
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BHT |
12 ug/g |
12 ug/g |
13 ug/g |
12 ug/g |
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KETONES |
28 ug/g |
28 ug/g |
21 ug/g |
26 ug/g |
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SILOXANE |
1 ug/g |
0 ug/g |
0 ug/g |
1 ug/g |
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HYDROCARBON, OTHERS |
19 ug/g |
15 ug/g |
14 ug/g |
16 ug/g |
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TOTAL |
60 ug/g |
55 ug/g |
48 ug/g |
54 ug/g |
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 |
Limits |
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SILICONE OIL |
10 |
As per customer’s specification |
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HYDROCARBONS |
160 |
As per customer’s specification |
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 |
Section 1 Sample
(ug/cm square) |
Section 2 Sample |
Section 3 Sample |
Average |
Limits |
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AMMONIUM |
0.015 |
0.014 |
0.020 |
0.016 |
As per customer’s specification |
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BROMIDE |
0.008 |
0.008 |
0.004 |
0.007 |
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CALCIUM |
0.019 |
0.020 |
0.022 |
0.020 |
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CHLORIDE |
0.008 |
0.010 |
0.014 |
0.010 |
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FLUORIDE |
0.032 |
0.029 |
0.031 |
0.030 |
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MAGNESIUM |
0.001 |
0.001 |
0.001 |
0.001 |
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NITRATE |
0.003 |
0.004 |
0.004 |
0.003 |
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NITRITE |
0.000 |
0.000 |
0.000 |
0.000 |
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PHOSPHATE |
0.086 |
0.069 |
0.071 |
0.075 |
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POTASSIUM |
0.010 |
0.012 |
0.011 |
0.011 |
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SODIUM |
0.155 |
0.150 |
0.147 |
0.150 |
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SULFATE |
0.000 |
0.005 |
0.000 |
0.001 |
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TOTAL SUM OF ANIONS |
0.337 |
0.322 |
0.325 |
0.324 |
ROHS FOR SPIRAL COIL
On analysis, the following result were obtain:-
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Test Parameter |
Digestion/
Extraction Method |
Analysis Method |
Result, ppm (w/w) |
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Mercury (Hg) |
AC/RoHS/0010 Ver1.1/05 Wet Acid Digestion (Microwave) |
CVAAS |
ND |
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Lead (Pb) |
AC/RoHS/0007 Ver1.0/05 Dry Ashing |
ICP-AES |
ND |
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Cadmium (Cd) |
AC/RoHS/0007 Ver1.1/05 Wet Acid Digestion (Microwave) |
ICP-AES |
ND |
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Hexavalent Chromium (Cr 6+) |
Ac/RoHS/0011 Ver1.0/05 EPA 3060A / 7196A (Modified) |
ND |
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Polybrominated Biphenyls (PBB) |
AC/RoHS/0012 Ver1.1/05 (Microwave) |
GC-MS |
ND |
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Plybrominated Diphenyl Ethers (PBDEs) |
AC/RoHS/0012 Ver1.1/05 (Microwave) |
GC-MS |
ND |
Remarks:
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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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