STTH3010PI Fast / Ultrafast Diode, 1 kV, 20 A, Single, 1.3 V, 42 ns, 180 A. The STTH3010PI is an Ultrafast Recovery Diode with high reverse voltage capability. The high quality design of this diode has produced a device with low leakage current, regularly reproducible characteristics and intrinsic ruggedness. These characteristics make it ideal for heavy-duty applications that demand long term reliability.