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Hebei Jinglong I/e Trade Co., Ltd.
A1210 Huahai Universal Plaza, Shijiazhuang, Hebei, China
A1210 Huahai Universal Plaza, Shijiazhuang, Hebei, China
| 1. Wafer Diameter: (125 x 125)+/-0, 4mm 2. Dimensions Tolerance: +/-0, 4mm 3. Thickness of wafer, measured in the center of wafer: 190+/- 10¦Ìm, ¡Ý185 ¦Ìm 4. TTV: Not more than 25 ¦Ìm 5. Saw mark: ¡15 ¦Ìm, invisible by eyes 6. Camber: ¡30 ¦Ìm 7. Arc width departure(Big and small angle): ¡2mm in 45 degree 8. Surface Quality: No crack, no obvious saw mark, without obvious tactility, no pit, no V type gap, no hole, no glue left, surface cleaned, no abnormal spot, no stain. 9. Notch: Not allowed 10. Tiny luminance Edge: Width ¡1/3 of wafer thickness; Length¡1/2 of wafer dimension 11. Edge defect: Edge defect width ¡0.2mm; Extension less than 0.5mm; With total quantity ¡2, distance¡Ý30mm |
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