The IRF540N is a high-voltage N-channel enhancement mode MOSFET designed for applications that require switching loads up to 100V. It is a rugged power component known for its low thermal resistance and high-speed switching capabilities, making it a preferred choice for heavy DC loads and industrial power supplies.
Table of Contents
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IRF540N Pinout (TO-220)
| Pin Number | Terminal Name | Description |
| 1 | Gate (G) | Control terminal; requires 10V for full saturation. |
| 2 | Drain (D) | Connected to the load; shares the metal tab. |
| 3 | Source (S) | Return path connection to ground (GND). |
Technical Specifications
- Max Drain-Source Voltage (VDS): 100V
- Max Continuous Drain Current (ID): 33A
- Gate Threshold Voltage (VGS(th)): 2.0V to 4.0V
- On-Resistance (RDS(on)): 0.044 Ω
- Total Power Dissipation (PD): 130W
Key Features & Benefits
- High Voltage Rating: Safely handles up to 100V for high-voltage DC systems.
- Low Resistance: Efficient performance reduces heat buildup during operation.
- Fast Switching: Optimized for high-frequency pulse width modulation (PWM).
Common Applications
- DC Motor Speed Control (24V – 48V systems).
- Uninterruptible Power Supplies (UPS).
- Solar Power Regulators and Converters.
IRF540N Equivalent & Substitutes
- IRF540 (Non-N version)
- 2N7000 (Low power only)
- IRFB4110 (Higher power alternative)
Related Tutorials on elxhub
- Master Selection: Need help choosing? See our Ultimate MOSFET Selection Guide.
- Signal Shifting: Learn how to bridge logic levels in our Logic Level Shifter Tutorial.
- Basics: Learn more in Transistors – Basics, Types, and Working.
Conclusion
The IRF540N is a high-voltage workhorse that provides the necessary headroom for projects exceeding the standard 60V limit while maintaining the efficiency expected of a modern power MOSFET.
Download the MOSFET Datasheet pdf
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