Description

Transistor TIP122 NPN 5A 100V


Description:Transistor TIP122 NPN 5A 100V

The TIP122 Transistor is a high-performance NPN Darlington pair transistor designed for medium- to high-current switching and amplification applications. It is one of the most popular choices for power control, relay driving, motor regulation, and amplifier circuits due to its high current gain, low saturation voltage, and durable construction. The TIP122 Transistor can handle a collector current of up to 5A and a collector-emitter voltage of 100V, making it suitable for a wide range of industrial and electronic projects.

As a Darlington configuration transistor, the TIP122 Transistor offers an exceptionally high DC current gain (hFE), typically greater than 1000, which allows small input signals to control large currents efficiently. This makes it ideal for interfacing low-power control circuits (such as microcontrollers and logic ICs) with high-current loads like motors, lamps, solenoids, and relays.

Furthermore, the TIP122 Transistor exhibits fast switching capability, excellent thermal stability, and low saturation voltage, improving overall system efficiency. Its TO-220 plastic package provides excellent heat dissipation, making it a robust and reliable component for continuous operation in power circuits.


Key Features:

  • NPN Darlington Transistor: Designed for high-gain and high-current control.

  • Collector-Emitter Voltage (Vce): Rated up to 100V for wide voltage range applications.

  • Collector Current (Ic): Handles up to 5A continuous current.

  • High DC Gain (hFE): Typically greater than 1000, providing efficient amplification.

  • Low Saturation Voltage (Vce(sat)): Improves efficiency and reduces power loss.

  • Fast Switching Capability: Suitable for pulse and control systems.

  • TO-220 Package: Ensures durability, compactness, and effective heat dissipation.


Applications:

  • Relay, lamp, and solenoid driver circuits

  • DC motor speed control and power regulation

  • Audio amplifier output stages

  • LED and power lighting controllers

  • Power supply and inverter circuits

  • Signal amplification in industrial and automation systems


Electrical Characteristics (Typical Values):

Parameter Symbol Value Unit
Collector-Emitter Voltage Vceo 100 V
Collector Current Ic 5 A
DC Current Gain hFE ≥1000
Saturation Voltage Vce(sat) 2 V
Power Dissipation Ptot 65 W
Transition Frequency fT 3 MHz
Operating Temperature Tj -65 to +150 °C

Advantages:

  • High current amplification, enabling control of large loads with small input signals.

  • Excellent reliability and durability, suitable for continuous power operations.

  • Low saturation voltage, reducing energy loss and heat buildup.

  • Fast response switching, ideal for control and timing circuits.

  • Compatible with logic-level control signals, including microcontrollers.

  • Rugged TO-220 design, providing long-term stability and ease of mounting.

  • Thermally efficient, allowing effective performance even under heavy loads.


Summary:

The TIP122 Transistor is a versatile and efficient NPN Darlington power transistor that combines high current gain, fast switching speed, and robust construction. Capable of handling 5A of collector current and 100V of voltage, it excels in amplification, power control, and high-current switching applications.

Its Darlington pair structure allows it to drive heavy loads with minimal input current, while the TO-220 package ensures efficient heat dissipation and easy installation. Whether used in motor drivers, relay controllers, or amplifier circuits, the TIP122 Transistor guarantees stability, performance, and long-lasting reliability in every design.

Shipping & Delivery