MDK500A high power photovoltaic anti-reverse diode power station 500A 1600V | eBay
500A High Power Thyristor Bidirectional Helical Anti-backflow Silicon Rectifier Diode - AliExpress
Smap Type Diode And Thyristor Power Module (Nps Nkh500/18-1 500A 1800V) Capacity: 300 T/Hr at Best Price in New Taipei City | Nell Power Semiconductor Co. Ltd.