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.
OUTGASSING - Below are the data obtained from using the following chemical
Section 1 Sample
Section 2 Sample
Section 3 Sample
| Average |
| BHT||10 ug/g||13 ug/g||11 ug/g||11 ug/g|
| KETONES||26 ug/g||23 ug/g||24 ug/g||24 ug/g|
| SILOXANE||1 ug/g||0 ug/g||0 ug/g||1 ug/g|
| HYDROCARBON, OTHERS||15 ug/g||12 ug/g||17 ug/g||15 ug/g|
| TOTAL||52 ug/g||48 ug/g||52 ug/g||51 ug/g|
FTIR / SILICONE OIL / HYDROCARBONS
- Below shown was obtain from the analyzed result on one section of the Spiral Coil.
Section 1 Sample
| SILICONE OIL||10|| As per customer's specification |
| HYDROCARBONS||160|| As per customer's specification|
Note: Result for both the silicone oil and hydrocarbons are in nanograms/cm square surface area.
IONIC CONTAMINTAION - The result tested as follows
Section1 Sample (ug/cm square)
| Section 2 Sample || Section 3 Sample || Average || Limits|
| AMMONIUM||0.014||0.014||0.019||0.016|| As per customer's specification |
TOTAL SUM OF ANIONS
ROHS FOR SPIRAL COIL - On analysis, the following result were obtain:
| Test Parameter|| Digestion / Extraction Method|| Analysis Method || Result, ppm (w/w) |
| Mercury (Hg)|| AC/RoHS/0010 Ver1.1/05 Wet Acid Digestion (Microwave) ||CVAAS||ND|
| Lead (Pb)|| AC/RoHS/0007 Ver1.0/05 Dry Ashing||ICP-AES||ND|
| Cadmium (Cd)|| AC/RoHS/0007 Ver1.1/05 Wet Acid Digestion (Microwave)||ICP-AES||ND|
| Hexavalent Chromium (Cr 6+)|| Ac/RoHS/0011 Ver1.0/05 EPA 3060A / 7196A (Modified)||ND|
| Polybrominated Biphenyls (PBB)|| AC/RoHS/0012 Ver1.1/05 (Microwave)||GC-MS||ND|
| Plybrominated Diphenyl Ethers (PBDEs) || AC/RoHS/0012 Ver1.1/05 (Microwave)||GC-MS||ND|