2N5400 Pinout, Equivalent, Application, Datasheet

The 2N5400 pinout follows the Emitter–Base–Collector (E–B–C) configuration in a TO-92 package, which is commonly used in low-power and high-voltage circuit designs. The 2N5400 PNP transistor is designed for high-voltage, low-current applications, capable of withstanding collector-emitter voltages up to -120V and collector-base voltages up to -130V. It is a popular choice in audio amplifiers, switching regulators, and signal control circuits that require reliable performance and low noise.

Introduction to 2N5400 PNP Transistor

The 2N5400 transistor is a high-voltage PNP silicon transistor used for amplification and switching applications in both commercial and industrial electronics. With a maximum collector current of 600 mA and power dissipation of 625 mW, it is ideal for medium signal and voltage amplifier stages.

Because of its TO-92 plastic package and high breakdown voltage, the 2N5400 PNP transistor is highly reliable for audio and signal processing designs where stability and low distortion are essential. It performs efficiently in analog amplifiers, control circuits, and small power drivers.

2N5400 PNP Transistor

Pinout of 2N5400

Understanding the 2N5400 Pinout Configuration

The 2N5400 pinout is easy to identify when viewing the transistor’s flat side facing you with the leads pointing downward. The pin sequence is Emitter–Base–Collector (E–B–C), which matches most standard TO-92 transistors.

Pin Configuration of 2N5400 Pinout

Key Features of 2N5400 Transistor

• High-voltage PNP transistor suitable for signal and amplifier stages
• Low noise and high linearity ideal for precision analog circuits
• Compact TO-92 package for PCB and breadboard applications
• Reliable switching performance under various conditions
• Stable DC gain and thermal resistance
• Long-term reliability in high-voltage low-current operation

2N5400 Transistor Datasheet and Specifications

• Transistor Type: PNP Silicon
• Collector–Emitter Voltage (Vce): -120 V
• Collector–Base Voltage (Vcb): -130 V
• Emitter–Base Voltage (Veb): -5 V
• Collector Current (Ic): -600 mA
• Total Power Dissipation (Ptot): 625 mW
• DC Current Gain (hFE): 40 – 250 (typical range)
• Transition Frequency (fT): 100 MHz (typical)
• Junction Temperature (Tj): 150°C (max)
• Package Type: TO-92
• Pin Configuration: Emitter – Base – Collector (E–B–C)

Working Principle of 2N5400 PNP Transistor

The 2N5400 PNP transistor works as a current-controlled device, where a small current flowing out of the base controls a larger current flowing from emitter to collector. When the base is at a lower potential than the emitter, the transistor becomes forward-biased, allowing current to flow.

Its high voltage handling (up to -120V Vce) and low noise performance make it perfect for audio amplifiers, signal switching, and high-voltage regulator circuits. The 2N5400 transistor can be used in both linear and switching regions, depending on circuit configuration.

More Circuit Layouts

Typical Applications of 2N5400

• Audio preamplifier and driver circuits
• Voltage and current regulation stages
• Signal switching and pulse control
• High-voltage amplifier circuits
• Low-frequency oscillator and feedback systems
• Small-signal processing circuits

Equivalent Transistors and Alternatives

While no complementary is required here, the 2N5400 transistor can be replaced with similar PNP transistors having comparable voltage and current ratings, such as:

• MPSA92 – PNP high-voltage transistor with similar characteristics
• 2N5401 – Higher voltage version for extended breakdown conditions
• BC557B – General-purpose low-voltage substitute (for lower-voltage use)

Always ensure the replacement transistor matches pin configuration and electrical ratings.

Frequently Asked Questions (FAQ)

What is the 2N5400 transistor used for?

It is used for high-voltage signal amplification, audio circuits, and switching control applications.

What is the 2N5400 pinout?

The 2N5400 pinout is Emitter–Base–Collector (E–B–C) in the TO-92 package.

What is the maximum collector current of 2N5400?

The maximum collector current (Ic) is 600 mA.

Can 2N5400 be used in amplifier circuits?

Yes, it performs excellently as a signal amplifier due to its low noise and high voltage tolerance.

Is 2N5400 a high-voltage transistor?

Yes, it supports up to -120V collector-emitter voltage, making it suitable for high-voltage low-current applications.

Conclusion

The 2N5400 PNP transistor is a high-voltage, low-current general-purpose device ideal for audio, signal, and amplifier circuits. With its -120V collector-emitter voltage, 600 mA current capacity, and excellent gain stability, it offers dependable performance in TO-92-based circuit designs. Whether used in analog stages or switching circuits, the 2N5400 transistor ensures reliable and noise-free operation across a broad voltage range.

Datasheet & Pinout of 2N5400 PNP Transistor

Click the following Button to download the datasheet of 2N5400 Transistor :

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