STTH1002CSx Ultrafast Recovery Diodes STMicroelectronics STTH1002CSx Ultrafast Recovery Diodes are designed for applications requiring an optimized VF and reverse recovery characteristics. These 200V, dual 5A diodes are also ideal for use in secondary rectification functions, such as high-frequency DC to DC converters, Switch-Mode Power Supplies (SMPS), or lighting applications. The STTH1002CSx Diodes offer low losses, low forward and reverse recovery time, high surge current capability, and a high maximum junction temperature.