The STTH20W02CW is a 200 V, 10 A per diode fast recovery rectifier from STMicroelectronics, configured as a 1 Pair Common Cathode in a through-hole TO-247-3 package. The 1.2 V forward voltage at 10 A (per diode) is a reasonable conduction-loss figure for a 200 V device at this speed.
The TO-247-3 package is a through-hole, three-lead power package with a large metal tab for heatsinking. It handles the thermal dissipation from two 10 A diodes running in a common-cathode configuration. The junction is rated to 175°C maximum, which gives headroom for high-temperature operation in industrial power supplies or motor drives.
