32 ns reverse recovery — what it buys you
The STTH1R02ZF is a 200 V, 1 A fast-recovery diode from STMicroelectronics, in a SOD-123F surface-mount package. Its 32 ns reverse recovery time (trr) is the headline number that matters for switching supplies, PFC stages, and flyback snubbers — it cuts the tail current that causes turn-off loss and ringing. Rated junction temperature goes to 175 °C, which gives headroom in cramped power supplies where the diode sits near hot magnetics.
