The 40 ns trr makes it suitable for high-frequency switching applications like power factor correction (PFC) and freewheeling diodes in SMPS designs, where fast turn-off reduces switching losses. Forward voltage drop is 1.7 V at 10 A, which is typical for a 400 V class fast recovery diode — expect conduction losses around 17 W at full rated current, so thermal management through the DPAK's tab is essential. Junction temperature rating goes to 175°C, which gives headroom for high-temperature environments like enclosed power supplies or motor drives. Reverse leakage is 10 µA at 400 V, a clean number that won't eat into standby budgets.
STTH10R04B-TR Fast Recovery Diode, 400V 10A, 40ns trr, DPAK
MPNSTTH10R04B-TR
Obsolete
STMicroelectronics STTH10R04B-TR fast recovery diode, 400V 10A, 40ns trr, DPAK surface mount.
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026
Specifications
| Parameter | Value |
|---|---|
| Mounting | Surface Mount |
| Voltage - DC reverse (Vr) | 400 V |
| Voltage - forward (Vf) (Max) @ if | 1.7 V @ 10 A |
| Current - reverse leakage @ vr | 10 µA @ 400 V |
| Current - average rectified | 10A |
| Operating temperature - junction | 175°C (Max) |
| Speed | Fast Recovery =< 500ns, > 200mA (Io) |
| Package | Tape & Reel (TR) Cut Tape (CT) |
| Technology | Standard |
| Case | TO-252-3, DPak (2 Leads + Tab), SC-63 |
| Reverse recovery time | 40 ns |
Product details
Frequently asked questions
What is the reverse recovery time of STTH10R04B-TR?
The reverse recovery time (trr) is 40 ns, which qualifies it as a fast recovery diode suitable for switching frequencies above 50 kHz in typical PFC and SMPS topologies.
What are the specifications of STTH10R04B-TR?
Key specifications: 400 V reverse voltage, 10 A average rectified current, 40 ns reverse recovery time, 1.7 V forward voltage at 10 A, 10 µA reverse leakage at 400 V, 175°C maximum junction temperature, DPAK surface-mount package.