A面（11-20）蓝宝石晶片具有均匀的介电常数和高绝缘特性，因此通常用于混合微电子应用，A-plane也可用于高超导体的生长。
例如：TlBaCaCuO（TbBaCaCuO）、Tl-2212，在蓝宝石氧化铈（CeO2）复合衬底上生长异质外延超导薄膜等。
| Item | 2-inch A-plane(11-20) 430μm Sapphire Wafers | |
| Crystal Materials | 99,999%, High Purity, Monocrystalline Al2O3 | |
| Grade | Prime, Epi-Ready | |
| Surface Orientation | A-plane(11-20) | |
| Diameter | 50.8 mm +/- 0.1 mm | |
| Thickness | 430 μm +/- 25 μm | |
| Primary Flat Orientation | C-plane(0001) +/- 0.2° | |
| Primary Flat Length | 16.0 mm +/- 1.0 mm | |
| Single Side Polished | Front Surface | Epi-polished, Ra < 0.5 nm (by AFM) |
| (SSP) | Back Surface | Fine ground, Ra = 0.8 μm to 1.2 μm |
| Double Side Polished | Front Surface | Epi-polished, Ra < 0.5 nm (by AFM) |
| (DSP) | Back Surface | Epi-polished, Ra < 0.5 nm (by AFM) |
| TTV | < 10 μm | |
| BOW | < 10 μm | |
| WARP | < 10 μm | |
| Cleaning / Packaging | Class 100 cleanroom cleaning and vacuum packaging, | |
| 25 pieces in one cassette packaging or single piece packaging. | ||
