2N6473 Pinout, Equivalent, Application, Datasheet

The 2N6473 pinout is an essential reference for electronics engineers and hobbyists working with high-voltage, medium-current switching circuits. As a rugged NPN power transistor, the 2N6473 is widely used in power supplies, motor drivers, and industrial control systems due to its strong 100V rating, 4A current capacity, and TO-220 package stability.

Introduction to 2N6473 NPN Transistor

The 2N6473 NPN transistor is designed for applications that require dependable switching, robust power handling, and efficient thermal control. Engineered with a voltage tolerance of 100V (Vce) and 110V (Vcb), the device is built to withstand heavy electrical loads while maintaining stable operation.

Its 4A collector current and 40W power dissipation make it ideal for various power electronics designs. Because the 2N6473 comes in a TO-220 body style, it can dissipate heat efficiently and is well suited for high-temperature environments or circuits requiring continuous switching.

For designers seeking an all-purpose high-voltage NPN power transistor, the 2N6473 remains a reliable and durable choice.

2N6473 NPN Transistor

Pinout of 2N6473

Pin Configuration of 2N6473 Pinout

Understanding the 2N6473 Pinout Configuration

The 2N6473 pinout follows the standard TO-220 layout used by many power BJTs. When looking at the device from the front (pins down, metal tab at the back), the following pin order applies:

Pin-1: Base → Pin-2: Collector → Pin-3: Emitter
This familiar B-C-E arrangement makes the transistor easy to integrate into existing power circuits.

Key Features of 2N6473 Transistor

• High-voltage handling capability
• Strong medium-current switching
• Robust TO-220 package for heat dissipation
• Suitable for inductive and resistive loads
• Reliable for continuous and pulse switching
• Ideal for industrial and automotive power circuits

2N6473 Transistor Datasheet and Specifications

• Collector-Emitter Voltage (Vce): 100V
• Collector-Base Voltage (Vcb): 110V
• Collector Current (Ic): 4A
• Total Power Dissipation (Pd): 40W
• Package: TO-220
• Pin Configuration: Base – Collector – Emitter
• Device Type: NPN Bipolar Junction Transistor

Working Principle of 2N6473 Transistor

The 2N6473 operates as a high-voltage NPN bipolar transistor that amplifies or switches current depending on the base drive. When a small current enters the base, a much larger current flows from collector to emitter, allowing the transistor to power motors, relays, solenoids, and other heavy electrical loads.

Its ability to operate efficiently in saturation mode makes it suitable for PWM motor control, inverter stages, and switching regulators. The TO-220 package allows safe operation under elevated thermal stress with heat sinking.

More Circuit Layouts

Applications of 2N6473 Transistor

• Motor driver circuits
• High-voltage switching systems
• Relay and solenoid activation
• Power supply and SMPS output stages
• Inverter and converter circuitry
• Lamp and LED power control
• Industrial automation equipment
• DC and AC load switching

Equivalent and Alternative Transistors

Possible substitutes for 2N6473 include:

• TIP41C (lower current, similar voltage)
• TIP48 (higher voltage but lower current)
• BD249C (higher power rating)
• 2SD1047 (higher gain and power)
• MJE13007 (for high-voltage switching)
• MJE15030 (for audio and power switching)

Ensure proper thermal and electrical matching before replacement.

Frequently Asked Questions (FAQ)

What is the 2N6473 used for?

It is used for high-voltage switching, motor control, power supplies, and industrial automation circuits.

What type of transistor is the 2N6473?

The 2N6473 is an NPN bipolar junction transistor.

What is the 2N6473 pin configuration?

The pin sequence is Base – Collector – Emitter (B-C-E).

How much current can the 2N6473 handle?

It can handle up to 4A continuous with proper heat sinking.

Can I replace 2N6473 with TIP41C?

TIP41C can be used in some cases, but verify the current and voltage requirements first.

Conclusion

The 2N6473 NPN transistor is a high-performance power device well suited for demanding switching operations. Its 100V/110V voltage capability, 4A current rating, and 40W dissipation make it ideal for medium-power electronics, motor drivers, and industrial switching systems. Engineers and hobbyists value the 2N6473 for reliability, simplicity, and long-term stability.

Datasheet & Pinout of 2N6473 NPN Transistor

Click the following Button to download the datasheet of 2N6473 Transistor :

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