STP7NC40 is an N-channel MOSFET from ST, with a rated voltage of 400V and a rated current of 6A. The typical on-resistance is 0.75 ohms and it is packaged in a TO-220 package.
The STP7NC40 N‑channel MOSFET is designed for high‑efficiency DC‑DC converters, UPS and motor‑control applications. It offers a 400 V drain‑source rating, 6 A continuous drain current, and a typical on‑resistance of 0.75 Ω, providing low gate charge and excellent dv/dt capability.
The datasheet includes comprehensive electrical characteristics, thermal data, avalanche specifications, switching performance, and mechanical dimensions for the TO‑220 package, enabling designers to evaluate suitability for high‑speed, high‑power switching circuits.
| Drain‑Source Voltage (VDS) | 400 V |
|---|---|
| Continuous Drain Current (ID) at 25 °C | 6 A |
| Total Power Dissipation (PD) | 100 W |
| Typical On‑Resistance (RDS(on)) | 0.75 Ω |
| Junction‑to‑Case Thermal Resistance (RθJC) | 1.25 °C/W |
| Junction‑to‑Ambient Thermal Resistance (RθJA) | 62.5 °C/W |
| Avalanche Current (IAvalanche) | 6 A |
| Single Pulse Avalanche Energy (EAS) | 320 mJ |
| Gate Threshold Voltage (VGS(th)) | 2‑4 V |
| Output Capacitance (Coss) | 90 pF |
The device can handle a continuous drain current of 6 A at 25 °C.
The typical on‑resistance is 0.75 Ω.
The avalanche current rating is 6 A (repetitive or non‑repetitive).