2N3704 Pinout, Equivalent, Application, Datasheet

The 2N3704 pinout represents a general-purpose NPN silicon transistor designed for medium-current switching and signal amplification tasks. It delivers stable gain, fast switching response, and consistent performance across a wide range of temperatures, making it an excellent choice for audio amplifiers, signal drivers, and low-frequency amplifier circuits.

Encased in a compact TO-92 plastic package, the 2N3704 transistor is ideal for compact circuit designs where thermal efficiency and reliability are critical. It is often used in audio preamplifiers, control modules, and digital switching applications.

Introduction to 2N3704 NPN Transistor

The 2N3704 is a general-purpose NPN transistor built to handle moderate voltage and current levels efficiently. It operates with a collector-emitter voltage (Vce) of 30V and a collector-base voltage (Vcb) of 50V, supporting a maximum collector current (Ic) of 800mA. With a total power dissipation (Ptot) of 360mW, this transistor performs well in medium-power amplifier and switching circuits.

Known for its low leakage, good linearity, and wide frequency response, the 2N3704 offers dependable results in both analog and digital electronic applications. Its TO-92 package ensures ease of integration into PCB and prototyping boards.

2N3704 NPN Transistor

Pinout of 2N3704

Pin Configuration of 2N3704 Pinout

Understanding the 2N3704 Pinout Configuration

The 2N3704 pinout follows the Emitter–Collector–Base (E–C–B) configuration when viewed from the flat side of the TO-92 package. This pin arrangement is essential to verify before circuit placement to avoid reversed biasing or improper operation.

Key Features of 2N3704 Transistor

• General-purpose NPN silicon transistor
• Suitable for medium-current switching and signal amplification
• Compact TO-92 plastic package for easy PCB mounting
• Provides fast switching speed and low saturation voltage
• Offers moderate current gain with stable operation
• Compatible with low-frequency amplifier and driver circuits

2N3704 Transistor Datasheet and Specifications

• Collector-Emitter Voltage (Vce): 30V
• Collector-Base Voltage (Vcb): 50V
• Emitter-Base Voltage (Veb): 5V
• Collector Current (Ic): 800mA
• Total Power Dissipation (Ptot): 360mW
• DC Current Gain (hFE): 40 to 160 (typical)
• Transition Frequency (fT): 100 MHz (typical)
• Polarity Type: NPN
• Package Type: TO-92
• Pinout Configuration: Emitter–Collector–Base (E–C–B)
• Junction Temperature (Tj max): 150°C
• Storage Temperature Range: -55°C to +150°C

Equivalent and Alternative Transistors

Common 2N3704 equivalents include:

• 2N2222
• 2N3904
• BC547
• 2N4401
• PN2222
• S8050

Ensure equivalent transistors are checked for pin configuration, gain, and voltage tolerance before substitution.

More Circuit Layouts

Applications of 2N3704 Transistor

• Low and medium-power switching circuits
• General-purpose amplifier stages
• Signal processing and driver circuits
• Audio frequency amplifiers
• Control and relay driver modules
• Digital logic and interface switching

Working Principle of 2N3704 Transistor

The 2N3704 NPN transistor works as a current-controlled device, where a small current entering the base controls a larger current flowing from collector to emitter. When a positive voltage is applied to the base relative to the emitter, the transistor conducts, allowing current flow through the collector-emitter path.

This makes it highly effective in switching circuits, amplifiers, and signal processing modules where controlled gain and stable response are essential.

Frequently Asked Questions (FAQ)

What is the polarity of 2N3704?

The 2N3704 is an NPN transistor.

What is the 2N3704 pinout?

It follows the Emitter–Collector–Base (E–C–B) sequence from the flat side of the TO-92 package.

What is the maximum collector current of 2N3704?

It can handle up to 800mA of collector current.

Is 2N3704 suitable for amplification?

Yes, it performs effectively in low- and medium-frequency amplifier applications.

What is the power dissipation of 2N3704?

The maximum power dissipation is 360mW.

Conclusion

The 2N3704 NPN transistor is a versatile and efficient component used in amplifier, switching, and driver circuits. With its TO-92 compact packaging, moderate gain, and fast switching speed, it is ideal for both analog and digital designs. Its reliability and wide availability make it one of the most commonly used transistors in low to medium power electronic applications.

Datasheet & Pinout of 2N3704 NPN Transistor

Click the following Button to download the datasheet of 2N3704 Transistor :

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