Power Transistor TIP120 Darlington NPN, 5A TO-220

Power Transistor TIP120 Darlington NPN, 5A TO-220

Power Transistor TIP120 Darlington NPN, 5A TO-220

Power Transistor TIP120 Darlington NPN, 5A TO-220

Power Transistor TIP120 Darlington NPN, 5A TO-220

Power Transistor TIP120 Darlington NPN, 5A TO-220

Power Transistor TIP120 Darlington NPN, 5A TO-220

Transistors

Reference: TRTIP120

Part.No: TIP120

€1.60

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The TIP120 is a high-current Darlington NPN transistor in TO-220 package, designed for driving loads up to 5A. With exceptional current gain and low saturation voltage, it easily interfaces microcontroller outputs with motors, relays, solenoids and other power devices.

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Description
Product Details

TIP120 Darlington Power Transistor – High-Current Driver for Motors & Relays

The TIP120 is a Darlington NPN transistor optimized for medium-to-high current switching and amplification. Its monolithic Darlington pair structure delivers exceptionally high DC current gain, enabling it to control loads up to 5A with minimal base drive current—ideal for Arduino, ESP32 and embedded systems interfacing with motors, solenoids and relays without additional driver stages.

Functions & Applications

Exceptional Current Gain: Darlington pair configuration delivers ultra-high hFE, requiring minimal base current to switch maximum load current.
High Current Capacity: Continuous collector current up to 5A, suitable for driving motors, solenoids and relay coils directly from MCU logic pins.
Robust TO-220 Package: Thermally efficient through-hole package with integrated mounting tab, easy PCB integration and heatsinking.
Low Saturation Voltage: Minimal voltage drop in active state reduces power loss and heat generation in switching applications.

Technical Specifications

Parameter	Value / Specification
Transistor Type	Darlington
Polarity / Channel	NPN
Package / Case	TO-220
Collector-Emitter Voltage (Vceo)	60V
Max Collector Current (Ic)	5A
Power Dissipation (Pd)	40W
DC Current Gain (hFE)	1000–20000
Mounting Type	Through-Hole (THT) with Heatsink Tab

Frequently Asked Questions

Q: Can the TIP120 directly drive a 12V DC motor from an Arduino pin?
A: Yes, the TIP120's high current gain allows a single Arduino I/O pin (~20mA logic level) to switch and control a 12V motor drawing several amperes. Add a protective flyback diode across the motor to protect against inductive kickback.

Q: What is the complementary PNP Darlington transistor to pair with TIP120?
A: The TIP125 is the complementary PNP Darlington transistor, used in push-pull (complementary pair) output stages for bridge drivers and audio amplifiers.

Notes

Requires heatsink for continuous operation above 2A; ensure adequate thermal contact and use thermal compound. Always use flyback protection diode when switching inductive loads.

Note: Price refers to one (1) piece. The component is shipped in bulk without individual packaging.

Transistor Type: Darlington
Transistor Polarity / Channel: NPN
Transistor Case Style: TO-220

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