Introduction
The TIP146 is a high-power PNP Darlington transistor designed for applications requiring high current amplification, reliable switching, and efficient power handling. Built using a monolithic Darlington configuration, the device integrates two transistors into one package, significantly increasing its DC current gain (hFE ≥ 1000). This makes it a popular choice in audio amplifiers, motor drivers, and power regulation circuits where strong gain and robust performance are essential.
With a collector-emitter voltage (Vce) of -80V and the ability to handle a continuous collector current of -10A, the TIP146 is suitable for demanding electronic applications. Housed in the TO-218 package, it provides excellent thermal dissipation and durability, which ensures stable operation in high-power circuits.
TIP146 PNP Transistor
The TIP146 transistor is widely used in consumer electronics, industrial power control systems, and automotive circuits. It pairs effectively with its complementary NPN counterpart, the TIP141, in push-pull amplifier stages and switching applications. Its strong specifications and affordable cost make it one of the most reliable choices for both hobbyists and professional engineers.
TIP146 Pinout
TIP146 Pin Configuration
| Pin# | Pin Name | Pin Description |
|---|---|---|
| 1 | Base (B) | Controls transistor operation |
| 2 | Collector (C) | Connected to load or power supply |
| 3 | Emitter (E) | Current output terminal |
TIP146 Transistor Key Features
- Darlington pair design for very high current gain.
- Can handle large collector currents up to -10A.
- TO-218 package ensures strong heat dissipation.
- Ideal for linear and switching power applications.
- Widely used in motor control, audio amplifiers, and power supplies.
- Robust and affordable for industrial and consumer-grade projects.
Characteristics of TIP146 PNP Transistor
- Transistor Type: PNP Darlington Power Transistor
- Package: TO-218
- Collector-Emitter Voltage (Vce): -80V
- Collector-Base Voltage (Vcb): -80V
- Emitter-Base Voltage (Veb): -5V
- Collector Current (Ic): -10A continuous
- Power Dissipation (Pd): 125W
- DC Current Gain (hFE): ≥ 1000
- Junction Temperature (Tj): 150°C (max)
- Transition Frequency (ft): 3 MHz (typical)
More Circuit Layouts
Key Applications of TIP146 PNP Transistor
- High-power audio amplifier stages.
- Power switching circuits and regulators.
- Relay drivers and solenoid control.
- Industrial DC motor drivers.
- Automotive electronic circuits.
- Push-pull stages with complementary NPN devices.
NPN Complimentary Transistor
TIP141 is the NPN complementary transistor of TIP146.
Equivalent Transistors of TIP146
- TIP145 (PNP Darlington, similar performance)
- TIP147 (PNP Darlington, enhanced performance)
- BDW94 (PNP Darlington transistor alternative)
- MJ11015 / MJ11016 (PNP high-power alternatives)
(Pin configuration of some transistors mentioned above may different from TIP146).
Datasheet of TIP146 PNP Transistor
Click the following Button to download the datasheet of TIP146 Transistor :
More projects, You may like:
- Video Transmitter DIY Homemade FM Radio Transmitter
- Adjustable Power Supply DIY Battery Charger
- 12V-220V 500 Watt inverter DIY Homemade
- MPPT Solar Charge Controller DIY Homemade
- DIY LA4440 bass amplifier homemade
For more project and circuit diagrams, you can go through the Schematics in the main menu where you can find many interesting projects and circuit diagrams like audio amplifier circuits, voltage booster circuit, battery charger circuit and timer circuits etc., which are all beginner circuit projects. Feel free to check them out!
Thank you for visiting the article.
