STMicroelectronics STTH8R04FP, Fast Recovery Diode, Standard, 400 V, 8 A, 50 ns trr, 1.5 Vf @ 8 A, 10 µA @ 400 V, Through Hole, TO-220-2 Full Pack Isolated Tab, -40°C~175°C Junction.
| Parameter | Value |
|---|---|
| Diode type | Standard |
| Mounting | Through Hole |
| Voltage - DC reverse (Vr) | 400 V |
| Voltage - forward (Vf) (Max) @ if | 1.5 V @ 8 A |
| Current - reverse leakage @ vr | 10 µA @ 400 V |
| Current - average rectified | 8A |
| Operating temperature - junction | -40°C~175°C |
| Speed | Fast Recovery =< 500ns, > 200mA (Io) |
| Package | Tube |
| Case | TO-220-2 Full Pack, Isolated Tab |
| Reverse recovery time | 50 ns |
ST lists the STTH8R04FP as obsolete. For new production, you will need a replacement or a surplus buy.
The STTH8R04FP comes in a TO-220-2 Full Pack, Isolated Tab (ST calls it TO-220FPAC), through-hole mount. Reverse leakage is 10 µA at 400 V, which is clean for a fast-recovery diode at this voltage class.
Yes, STMicroelectronics lists the STTH8R04FP as obsolete. For new designs or repairs, you will need a replacement or a surplus buy. No official successor is recorded, but a pin-compatible part from the same STTH8RxxFP family with a higher voltage rating (e.g., STTH8R06FP at 600 V) may work if the circuit allows.
The reverse recovery time (trr) is 50 ns, which qualifies it as a fast-recovery diode (≤500 ns, >200 mA). That 50 ns trr makes it suitable for high-frequency switching applications like PFC and SMPS output rectification.