8 kV/3.6 kA light triggered thyristor

We have developed a light triggered thyristor with the blocking voltage of 8 kV and the average current of 3.6 kA by using a 6 inch FZ Si wafer and adopting new design techniques. The new multidynamic gate structure achieved a high di/dt capability at the rating voltage. The new arrangement of pilot thyristors made the dv/dt capability high. Additionally, optimizing the new local lifetime control technology by proton irradiation improved the trade-off relationship between the on-state voltage and the reverse-recovered charge.