Overview
The TIP122 transistor, produced by NTE Electronics, Inc., is a Darlington pair NPN transistor known for its high current gain and medium-power capabilities. It is housed in a TO-220 package and employs a monolithic Darlington configuration, which enhances its current gain and current rating. This transistor is designed for general-purpose amplifier and low-speed switching applications, making it suitable for controlling high-current loads and circuits requiring high amplification.
Key Specifications
| Feature | Specification |
|---|---|
| Package Type | TO-220 |
| Transistor Type | NPN Darlington |
| Base Current (IB) | 120 mA |
| Continuous Collector Current (IC) | 5 A |
| Collector-Emitter Voltage (VCE) | 100 V |
| Collector-Base Voltage (VCB) | 100 V |
| Emitter-Base Voltage (VEB) | 5 V |
| DC Current Gain (hFE) | 1000 @ IC = 3 A, VCE = 3 V |
| Collector-Emitter Saturation Voltage (VCE(sat)) | 2.0 V @ IC = 3 A, IB = 12 mA |
| Base-Emitter On Voltage (VBE(on)) | 2.5 V @ IC = 3 A, VCE = 3 V |
| Total Power Dissipation @ TC = 25°C | 65 W |
| Storage & Operating Temperature | -65 to +150 °C |
Key Features
- High DC Current Gain (hFE) of 1000, making it suitable for high amplification applications.
- Continuous Collector current (IC) of 5 A and peak current of 8 A.
- Collector-Emitter voltage (VCE) and Collector-Base voltage (VCB) of 100 V each.
- Low Base-Emitter voltage (VBE) of 5 V, allowing easy control by logic devices like microcontrollers.
- Low Collector-Emitter Saturation Voltage (VCE(sat)) of 2.0 V, reducing power loss and heat generation.
- Wide safe operating area, ensuring stable performance under varying conditions.
- Simple drive requirements with a base current of only 120 mA.
- TO-220 package for easy mounting and heat dissipation.
Applications
- Switching high-current loads up to 5 A.
- Medium-power switching applications.
- High amplification circuits, such as audio amplifiers.
- Speed control of motors and other high-current devices.
- Inverter and rectifier circuits.
- Controlling solenoids and LEDs.
Q & A
- What is the TIP122 transistor?
The TIP122 is a Darlington pair NPN transistor known for its high current gain and medium-power capabilities.
- What is the typical DC current gain (hFE) of the TIP122 transistor?
The typical DC current gain (hFE) of the TIP122 transistor is 1000.
- What is the continuous collector current (IC) of the TIP122 transistor?
The continuous collector current (IC) of the TIP122 transistor is 5 A.
- What is the collector-emitter voltage (VCE) of the TIP122 transistor?
The collector-emitter voltage (VCE) of the TIP122 transistor is 100 V.
- How is the TIP122 transistor controlled?
The TIP122 transistor is controlled by a base current of 120 mA and an emitter-base voltage (VBE) of 5 V, making it easily controllable by logic devices like microcontrollers.
- What are some common applications of the TIP122 transistor?
The TIP122 transistor is commonly used in switching high-current loads, medium-power switching applications, high amplification circuits, speed control of motors, and inverter and rectifier circuits.
- What is the peak current rating of the TIP122 transistor?
The peak current rating of the TIP122 transistor is 8 A.
- What is the storage and operating temperature range of the TIP122 transistor?
The storage and operating temperature range of the TIP122 transistor is -65 to +150 °C.
- What package type is the TIP122 transistor available in?
The TIP122 transistor is available in a TO-220 package.
- Why is the TIP122 transistor preferred in high-efficiency designs?
The TIP122 transistor is preferred in high-efficiency designs due to its low collector-emitter saturation voltage, which reduces power loss and heat generation.
