2N3504 Pinout, Equivalent, Application, Datasheet

The 2N3504 pinout defines the terminal configuration of this PNP silicon transistor commonly used for low-to-medium power switching and amplifier circuits. Known for its stable performance and durability, the 2N3504 provides excellent signal gain, low noise, and fast switching response, making it suitable for audio drivers, analog signal processing, and control circuits.

Its TO-39 metal can package ensures high reliability, thermal stability, and mechanical strength for industrial and professional electronic designs.

Introduction to 2N3504 PNP Transistor

The 2N3504 is a PNP bipolar junction transistor (BJT) designed for general-purpose amplification and switching tasks. With a collector current of 600mA and power dissipation of 400mW, it is ideal for signal-level and driver-stage applications.

Fabricated using silicon planar technology, the transistor delivers consistent gain, wide frequency response, and low saturation voltage—features that enhance efficiency in both analog and digital control circuits. The TO-39 metal case offers superior heat conduction, making it suitable for extended operational life in demanding environments.

2N3504 PNP Transistor

Pinout of 2N3504

Pin Configuration of 2N3504 Pinout

Key Features of 2N3504 Transistor

• PNP silicon transistor for general-purpose applications
• Reliable low-power amplification and switching performance
• Fast response time with low leakage current
• Excellent linearity in analog and signal circuits
• Durable TO-39 metal can package for heat dissipation
• Stable electrical behavior over varying temperatures

2N3504 Transistor Datasheet and Specifications

• Collector-Emitter Voltage (Vce): –45 V
• Collector-Base Voltage (Vcb): –45 V
• Collector Current (Ic): –0.6 A
• Total Power Dissipation (Ptot): 400 mW
• DC Current Gain (hFE): 40 – 160 (typical)
• Transition Frequency (fT): 100 MHz (typical)
• Junction Temperature (Tj max): 200 °C
• Package Type: TO-39 Metal Can
• Polarity: PNP
• Pin Configuration: Emitter – Base – Collector (E–B–C)

Equivalent and Alternative Transistors

Below are equivalent or alternative transistors for the 2N3504 (ensure electrical and pin compatibility before replacement):

• 2N2905
• 2N2907
• 2N4036
• 2N4037
• 2N3468
• PN2907A
• BC558 (for lower power circuits)

More Circuit Layouts

Applications of 2N3504 Transistor

• Audio and low-frequency amplifier circuits
• Signal and control processing units
• Power drivers and preamplifier stages
• Low-power switching in analog systems
• Voltage regulator control and bias circuits

Understanding the 2N3504 Pinout Configuration

The 2N3504 pinout follows the Emitter–Base–Collector (E–B–C) sequence when viewed from the bottom of the TO-39 metal package with leads facing downward. This configuration ensures easy compatibility with similar transistors for replacement or circuit upgrades.

Working Principle of 2N3504 Transistor

The 2N3504 operates as a current-controlled device, where a small current applied at the base terminal allows a larger current to flow from the emitter to the collector. Being a PNP transistor, it conducts when the base voltage is lower than the emitter voltage.

This behavior makes it efficient in low-side switching circuits, analog amplification, and driver stages that require controlled power flow and low thermal resistance.

Frequently Asked Questions (FAQ)

What is the 2N3504 transistor used for?

It is primarily used for signal amplification and low-power switching in audio and control applications.

What is the 2N3504 pinout configuration?

The 2N3504 pinout follows the Emitter–Base–Collector (E–B–C) order when viewed from the bottom of its TO-39 metal package.

Is 2N3504 suitable for audio amplifiers?

Yes, it provides low noise and good linearity, making it ideal for audio preamp and driver circuits.

What package type is used for 2N3504?

It uses a TO-39 metal can package, providing excellent thermal conduction and mechanical durability.

Can 2N3504 be replaced with 2N2907?

Yes, the 2N2907 is a suitable equivalent if voltage and gain requirements are met.

Conclusion

The 2N3504 PNP transistor is a robust and versatile semiconductor device ideal for low-to-medium power amplification and switching circuits. With a –45V collector-emitter voltage, 600mA collector current, and TO-39 metal casing, it delivers excellent thermal performance, electrical stability, and reliability. Whether used in audio preamplifiers, signal amplifiers, or control systems, the 2N3504 ensures consistent operation and long service life in various electronic projects.

Datasheet & Pinout of 2N3504 PNP Transistor

Click the following Button to download the datasheet of 2N3504 Transistor :

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