TIP140 NPN Power Darlington Transistor 60V 10A TO-218
The TIP140 is a high-power NPN Darlington transistor designed for applications requiring high current gain and the ability to control substantial electrical loads. Its Darlington configuration combines two bipolar transistors internally, providing high current amplification and allowing relatively small base-drive currents to control larger collector currents.
Designed for power switching and amplification circuits, the TIP140 is suitable for driving DC motors, solenoids, relays, lamps, and other electrical loads. Its TO-218 package supports heatsink mounting to help manage heat during operation, making it useful in power electronics, industrial control systems, and electronic projects requiring reliable high-current transistor control.
Features:
- NPN Darlington transistor configuration.
- High current amplification.
- Suitable for power switching applications.
- Designed for high-current load control.
- Through-hole mounting
- Heatsink-compatible power package.
- Suitable for linear amplification and switching circuits.
Specifications:
| Parameter | Value |
|---|---|
| Part Number | TIP140 |
| Transistor Type | NPN Darlington |
| Polarity | NPN |
| Technology | Silicon |
| Collector-Emitter Voltage (VCEO) | 60V |
| Collector-Base Voltage (VCBO) | 60V |
| Emitter-Base Voltage (VEBO) | 5V |
| Continuous Collector Current (IC) | 10A |
| Peak Collector Current | 15A |
| Base Current (IB) | 0.5A |
| Power Dissipation | 125W |
| DC Current Gain (hFE) | 1000 minimum at 5A |
| Collector-Emitter Saturation Voltage | 2V at 5A |
| Package | TO-218 |
| Number of Pins | 3 |
| Mounting Type | Through-Hole |
| Operating Temperature | -65°C to +150°C |
| Junction-to-Case Thermal Resistance | 1°C/W |

Pinout:
| Pin Number | Pin Name | Function |
|---|---|---|
| 1 | Base (B) | Controls transistor switching |
| 2 | Collector (C) | Connects to the load circuit |
| 3 | Emitter (E) | Current output / return |
Applications:
- DC motor speed controllers.
- Solenoid and relay drivers.
- High-current switching circuits.
- Power supply circuits.
- Audio power amplifier stages.
- Industrial automation systems
- Lamp and load control circuits.
- General-purpose power amplification.
Package Includes:
- 1 × TIP140 NPN Power Darlington Transistor 60V 10A TO-218.






