The 8-inch mainstream can be1200V200a121wafer. At present, the price of 8-inch silicon wafer based on SI is 2600-2800 yuan, and the price of 6-inch silicon wafer is 1500- 1700 yuan.
At present, the mainstream technology of IGBT: IGBT chip is composed of batteries, and the planar type has stronger current shock resistance and is relatively safe and reliable. The trench current density is higher and the cost is lower. Infineon and foreign manufacturers adopt trench scheme, while BYD mainly adopts flat plate, but if it wants to export, it needs to choose trench scheme.