STMicroelectronics STPS40M120CTN, Schottky diode, 120 V DC reverse, 20 A average rectified per diode, common-cathode pair, fast recovery ≤ 500 ns, TO-220-3 through-hole, tube.
| Parameter | Value |
|---|---|
| Mounting | Through Hole |
| Voltage - DC reverse (Vr) | 120 V |
| Voltage - forward (Vf) (Max) @ if | 790 mV @ 20 A |
| Current - reverse leakage @ vr | 370 µA @ 120 V |
| Current - average rectified (Io) (per diode) | 20A |
| Operating temperature - junction | 150°C (Max) |
| Speed | Fast Recovery =< 500ns, > 200mA (Io) |
| Package | Tube |
| Technology | Schottky |
| Case | TO-220-3 |
| Diode configuration | 1 Pair Common Cathode |
The junction operates up to 150 °C maximum. Forward voltage drop is 790 mV maximum at 20 A per diode, and reverse leakage is 370 µA at the rated 120 V. The fast-recovery characteristic (≤ 500 ns, > 200 mA) suits it for switching power supplies and output rectification stages where recovery time matters for efficiency and thermal budget.
STMicroelectronics lists the STPS40M120CTN as obsolete.
Submit an RFQ for current availability and pricing — no stock or price figures are published here.
Yes, STMicroelectronics has marked the STPS40M120CTN as obsolete. No official replacement is listed; procurement should plan for surplus or alternate-sourcing.
No direct replacement is cited in the official record. A functional substitute would need to match the 120 V reverse voltage, 20 A per-diode current, common-cathode configuration, and fast-recovery Schottky technology in a TO-220 package. Evaluate alternatives from the same or other manufacturers against your switching frequency and thermal requirements.