Wafer Thickness Measuring System
WT-425 - Tosei Engineering Corp. (Accretech)
Contact type can measure any materials within 0.2 µm (2 σ at 20℃ ±1℃). The wafer floats positions while measurement points change and it does not damage even thin wafers. Best for the process control of compound wafers and oxide wafers. (SiC, GaN, LT, Sapphire and Bonded Wafers)
