Overview
The STF21N90K5 is an N-channel Power MOSFET developed by STMicroelectronics using the advanced SuperMESH™ 5 technology. This device is renowned for its high voltage and low on-resistance characteristics, making it ideal for applications requiring superior power density and high efficiency. The STF21N90K5 is available in the TO-220FP package and is designed to handle high current and voltage requirements with enhanced reliability and performance.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Drain-Source Breakdown Voltage (VDS) | 900 | V |
| On-Resistance (RDS(on)) | 0.25 (typ.) | Ω |
| Continuous Drain Current (ID) at TC = 25 °C | 18.5 | A |
| Pulsed Drain Current (IDM) | 74 | A |
| Gate-Source Voltage (VGS) | ±30 | V |
| Total Dissipation at TC = 25 °C | 250 | W |
| Thermal Resistance Junction-PCB (Rthj-pcb) | 30 | °C/W |
| Gate-Source Charge (QGS) | 12 (typ.) | nC |
| Gate-Drain Charge (QGD) | 25 (typ.) | nC |
| Total Gate Charge (QG) | 43 (typ.) | nC |
Key Features
- Worldwide best RDS(on) and figure of merit (FOM) for high efficiency and power density.
- Ultra-low gate charge for fast switching times.
- 100% avalanche tested for robustness and reliability.
- Zener-protected gate-source to enhance ESD capability and absorb voltage transients.
- Avalanche-rugged design to handle high voltage and current stress.
- Available in TO-220FP package for versatile application needs.
Applications
The STF21N90K5 is suitable for a variety of switching applications, including but not limited to:
- Power supplies and DC-DC converters.
- Motor control and drives.
- Industrial automation and control systems.
- High-power audio amplifiers.
- Renewable energy systems such as solar and wind power inverters.
Q & A
- What is the drain-source breakdown voltage of the STF21N90K5?
The drain-source breakdown voltage (VDS) is 900 V. - What is the typical on-resistance of the STF21N90K5?
The typical on-resistance (RDS(on)) is 0.25 Ω. - What is the maximum continuous drain current at 25 °C?
The maximum continuous drain current (ID) at TC = 25 °C is 18.5 A. - What is the maximum pulsed drain current?
The maximum pulsed drain current (IDM) is 74 A. - What is the gate-source voltage range?
The gate-source voltage (VGS) range is ±30 V. - What is the total dissipation at 25 °C?
The total dissipation at TC = 25 °C is 250 W. - What is the thermal resistance junction-PCB?
The thermal resistance junction-PCB (Rthj-pcb) is 30 °C/W. - What are the key features of the SuperMESH™ 5 technology?
The SuperMESH™ 5 technology offers worldwide best RDS(on) and FOM, ultra-low gate charge, 100% avalanche testing, and Zener-protected gates. - In which package is the STF21N90K5 available?
The STF21N90K5 is available in the TO-220FP package. - What are some common applications for the STF21N90K5?
Common applications include power supplies, motor control, industrial automation, high-power audio amplifiers, and renewable energy systems.
