Overview
The 75N75 is an N-channel enhancement-mode power field-effect transistor designed for high-density, high-power switching applications. Housed in the industry-standard TO-220 package, this MOSFET is highly favored by Pakistani hobbyists and technicians alike for its ruggedness and reliability under heavy loads. It is the go-to component for fixing domestic UPS systems, modifying e-bike speed controllers, or constructing heavy-duty H-bridge motor drivers for combat robotics.
Key Features
Massive Current Capacity: Capable of handling continuous drain currents up to 75A, making it ideal for demanding industrial and DIY projects.
Ultra-Low On-Resistance: Features an incredibly low gate resistance to reduce power loss, maximize efficiency, and keep running temperatures low.
Fast Switching Performance: Excellent choice for high-frequency PWM (Pulse Width Modulation) speed controllers and DC-to-DC converters.
Easy Thermal Management: The TO-220 metal tab allows for direct, secure mounting to standard aluminum heatsinks.
Technical Specifications
| Feature | Specification |
| Transistor Type | N-Channel MOSFET |
| Drain-Source Voltage (Vdss) | 75 V |
| Continuous Drain Current (Id) | 75 A |
| Max On-State Resistance (Rds(on)) | ~11 mΩ (at Vgs = 10V) |
| Gate-Source Voltage (Vgs) | ±20 V |
| Power Dissipation (Pd) | 150 W (Max) |
| Package Style | TO-220 |
Common Applications
UPS & Inverter Repair: Extensively used in the power stages of local and commercial UPS units.
Electric Vehicle Controllers: Replacement power switches for e-bikes, scooters, and golf carts.
DC Motor Speed Control: Perfect for high-torque Arduino or PWM-based motor speed regulators.
Solar Charge Systems: Integrated into solar panel switching circuits and battery protection modules.
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