MJ15003 NPN Bipolar Power Transistor 140V 20A TO-3 Metal Package

MJ15003 NPN Bipolar Power Transistor 140V 20A TO-3 Metal Package

The MJ15003 is a high-current NPN bipolar power transistor designed for medium-to-high power amplification and switching applications. With a collector-emitter voltage of 140V and a collector current of 20A, it delivers robust performance, high gain, and excellent thermal stability.

Housed in a TO-3 metal package, the MJ15003 provides efficient heat dissipation and mechanical durability, making it ideal for audio power amplifiers, motor drivers, inverters, and industrial power switching circuits. Its high current handling capability and rugged construction ensure reliable operation under demanding electrical and thermal conditions.

Click here to view related products

Features:

• Transistor Type: NPN Bipolar Power Transistor
• Package: TO-3 Metal Can (excellent thermal performance)
• Collector-Emitter Voltage (V_CE): 140V
• Collector Current (I_C): 20A
• Power Dissipation (P_tot): Up to 250W (with proper heatsink)
• DC Current Gain (hFE): 20–70 (typical)
• High Thermal Stability: Performs reliably under heavy load conditions
• Rugged & Durable: Long-term operation in high-current applications
• Fast Switching Capability: Suitable for medium-to-high frequency applications

Applications:

• Audio Power Amplifiers: Driver and output stages requiring very high current
• Motor Drivers: High-current DC motor and actuator control
• Voltage Regulators & Power Supplies: Medium-to-high current regulation
• Industrial Switching Circuits: Heavy-duty load control and switching
• Inverters & Converters: DC-AC and DC-DC power conversion
• Relay & Solenoid Drivers: High-current switching applications
• Educational & Hobby Projects: Suitable for high-power experimentation