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TIP142 NPN Power Darlington Transistor TO-247

Specifications:

  • Type: NPN Power Darlington Transistor
  • Package Type: TO-247
  • Collector-Emitter Voltage (Vceo): 100V
  • Collector-Base Voltage (Vcbo): 120V
  • Emitter-Base Voltage (Vebo): 5V
  • Collector Current (Ic): 25A (continuous)
  • Total Power Dissipation (Ptot): 80W
  • Gain Bandwidth Product (fT): 4MHz (typical)

Special Features:

  • Darlington Configuration: The TIP142 is a Darlington transistor, which means it has two transistors in one package for high current gain. This allows for very high amplification of small input signals.
  • High Current Capability: It can handle up to 25A of continuous current, making it suitable for high-power applications.
  • High Voltage Rating: It can withstand collector-emitter voltages up to 100V, providing flexibility in various circuits.
  • Thermal Stability: Designed with good thermal performance and can dissipate significant power without overheating.

Original price was: ৳ 180.00.Current price is: ৳ 120.00.

Specification

Overview

Wiring Connections:

  • Collector (C): Connect to the load’s high side or the positive voltage supply. This is the terminal through which the current flows to the load.
  • Base (B): Connect to the input signal. This controls the transistor’s operation by determining the amount of current flowing from the collector to the emitter.
  • Emitter (E): Connect to the ground or the negative side of the load. This is where the current exits the transistor.

Wiring Steps:

  1. Collector Connection:
    • Step 1: Connect the collector terminal to the positive supply or high side of the load.
  2. Base Connection:
    • Step 1: Connect the base terminal to your control signal through a current-limiting resistor. This controls the transistor’s on/off state.
  3. Emitter Connection:
    • Step 1: Connect the emitter terminal to the ground or negative side of the load.

Power:

  • Collector-Emitter Voltage (Vceo): Up to 100V. Ensure the applied voltage does not exceed this rating to avoid damaging the transistor.
  • Collector Current (Ic): Up to 25A. The transistor can handle high current, but ensure adequate heat dissipation to prevent overheating.
  • Power Dissipation (Ptot): Can dissipate up to 80W. Use appropriate heatsinking or cooling to manage thermal dissipation.

Input and Output:

  • Input: The base of the transistor receives a small control current. This current should be enough to drive the transistor into saturation for effective switching.
  • Output: The transistor switches the load current from the collector to the emitter. The collector current is determined by the input signal and the load.

Physical Characteristics:

  • Package Type: TO-247, which is a standard package for power transistors. It is designed for easy mounting on heatsinks.
  • Size: The TO-247 package is  larger, which allows for better heat dissipation.
  • Material: Made from silicon and housed in a plastic package. It is designed to handle high power and high currents.

Technical Specifications:

  • Collector-Emitter Voltage (Vceo): 100V
  • Collector-Base Voltage (Vcbo): 120V
  • Emitter-Base Voltage (Vebo): 5V
  • Collector Current (Ic): 25A
  • Power Dissipation (Ptot): 80W
  • Gain Bandwidth Product (fT): 4MHz (typical)
  • Thermal Resistance Junction to Case (Rθjc): 1.6°C/W

Additional Features:

  • Integrated Diodes: Some versions of the TIP142 include integrated diodes for protection against voltage spikes and reverse polarity.
  • Thermal Protection: Features a high power dissipation capability, which helps in maintaining stable operation under varying load conditions.
  • High Gain: Provides high current gain due to its Darlington configuration, making it suitable for applications requiring significant amplification.

How to Use:

  1. Selection:
    • Step 1: Ensure the TIP142’s voltage and current ratings match the requirements of your application.
    • Step 2: Verify that the power dissipation and thermal management are adequate for your setup.
  1. Wiring:
    • Step 1: Connect the collector to the load’s high side or positive voltage supply.
    • Step 2: Connect the base to your control signal through a suitable resistor to limit the current.
    • Step 3: Connect the emitter to the ground or negative side of the load.
  1. Installation:
    • Step 1: Mount the transistor on a heatsink if necessary to manage heat dissipation.
    • Step 2: Ensure all connections are secure and insulated.
  1. Testing:
    • Step 1: Apply a control signal to the base and observe the transistor’s response.
    • Step 2: Measure the voltage and current to ensure they are within the transistor’s ratings.
  1. Maintenance:
    • Step 1: Regularly check for overheating or signs of damage.
    • Step 2: Ensure proper ventilation and cooling in your circuit to maintain optimal performance.

The TIP142 NPN Power Darlington Transistor TO-247 is a powerful and versatile component suitable for high-current switching and amplification tasks. Its Darlington configuration allows for high current gain and reliable performance in demanding applications. By following proper wiring and installation procedures, you can effectively utilize this transistor in various electronic circuits and systems.

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