200 V, 10 A per diode, 27 ns trr — fast recovery in an isolated full-pack
The STTH2002CFP is a dual fast-recovery diode array from STMicroelectronics, configured as a common-cathode pair in a single TO-220FP full-pack package. The forward voltage drop is 1.1 V maximum at 10 A per diode, and the junction temperature rating goes to 175 °C, suiting it for continuous-duty rectification in power supplies, PFC stages, and flyback converters where recovery speed matters.
Switching speed and conduction loss — the numbers that matter
The 27 ns trr is the headline spec: it places this diode in the fast-recovery class, suitable for hard-switching topologies where reverse-recovery charge drives EMI and switching loss. The 200 V Vr rating gives headroom for 100-150 V rails typical in offline flyback or boost PFC stages. At 10 A forward, the 1.1 V Vf produces 11 W conduction loss per diode — the TO-220FP full-pack case isolates the heatsink tab electrically, so you can bolt it directly to a grounded chassis without an insulating pad, which simplifies thermal management in high-voltage designs. Reverse leakage is 10 µA at 200 V rated voltage, which is low enough to avoid thermal runaway in most applications up to the 175 °C junction limit.
The base product number is STTH2002, and the CFP suffix denotes the TO-220FP full-pack variant. The standard TO-220 version (STTH2002CT) shares the same die but uses a non-isolated tab — the CFP version is the one to pick when you want to skip the insulator and bolt directly to a heatsink.