Understanding the 2N6520 pinout is essential for designing high-voltage switching stages, bias networks, control circuits, and signal-processing systems. The 2N6520 PNP transistor offers excellent voltage handling, stable performance, and reliable operation in low-current, high-voltage environments. This article covers its pin configuration, key features, datasheet specifications, working principle, major applications, and equivalent transistor options to help you use the 2N6520 effectively in modern electronic designs.

Introduction to 2N6520 PNP Transistor
The 2N6520 is a high-voltage PNP bipolar junction transistor designed specifically for low-current switching, signal amplification, and control applications. With a high voltage rating of 350V, it is suitable for circuits that require safe operation under elevated voltage conditions, such as high-voltage sensing, regulation, and industrial feedback networks. Its compact TO-92 package makes it ideal for compact or space-restricted circuit boards.
2N6520 PNP Transistor

Pinout of 2N6520

Pin Configuration of 2N6520 Pinout
| Pin# | Pin Name |
|---|---|
| 1 | Emitter |
| 2 | Base |
| 3 | Collector |
Understanding the 2N6520 Pinout Configuration
The 2N6520 pinout uses the standard E-B-C (Emitter–Base–Collector) configuration when viewed from the flat side of the TO-92 package.
- Emitter – Current output or return path
- Base – Controls transistor conduction
- Collector – Connects to the load or high-potential source
Correct pin orientation is crucial for preventing damage and ensuring stable performance in high-voltage PNP applications.
Key Features of 2N6520 Transistor
- High-voltage PNP transistor design
- Suitable for low-current switching
- Stable DC gain
- Fast response and reliable thermal behavior
- Compact and efficient TO-92 package
2N6520 Transistor Datasheet and Specifications
- Collector–Emitter Voltage (VCEO): −350V
- Collector–Base Voltage (VCBO): −350V
- Emitter–Base Voltage (VEBO): −5V
- Continuous Collector Current (IC): −500mA
- Total Power Dissipation (PT): 625mW
- DC Current Gain (hFE): As per datasheet
- Transition Frequency (fT): Datasheet dependent
- Package Type: TO-92
- Pin Configuration: E-B-C
Working Principle of 2N6520 Transistor
The 2N6520 works as a standard PNP transistor. When the base is driven more positive relative to the emitter, the transistor switches OFF; when driven more negative, it switches ON, allowing current to flow from emitter to collector. Due to its high breakdown voltage, it is ideal for signal-level switching, voltage monitoring circuits, and high-voltage analog sections where reliability and safe voltage margins are essential.
More Circuit Layouts








Applications of 2N6520 Transistor
- High-voltage switching circuits
- Voltage feedback and sensing networks
- Low-current driver stages
- Industrial control circuits
- Analog signal processing
- General purpose PNP switching applications
Equivalent and Alternative Transistors
Compatible equivalents include:
- MPSA92 (higher voltage PNP)
- 2N5401
- KSA916
- MPSA56
- BC557B (lower voltage, not always suitable)
(Confirm pin orientation before replacing.)
Frequently Asked Questions (FAQ)
Q1: What is the pinout of the 2N6520?
It follows E-B-C when viewed from the flat side.
Q2: Can the 2N6520 handle high current?
No, it is rated for 500mA, suitable for low-current tasks only.
Q3: Is the 2N6520 suitable for audio circuits?
It can be used for small-signal audio stages, but not for high-power outputs.
Q4: Can it replace the MPSA92?
Yes, in many high-voltage applications, but verify gain and pinout.
Conclusion
The 2N6520 is a robust, high-voltage PNP transistor designed for low-current switching, feedback control, and high-voltage signal processing. Its high breakdown voltage and TO-92 compact size make it ideal for compact industrial and general-purpose electronic designs. Understanding the 2N6520 pinout and electrical specifications ensures proper installation and maximum reliability in high-voltage circuits.
Datasheet & Pinout of 2N6520 PNP Transistor
Click the following Button to download the datasheet of 2N6520 Transistor :
More projects:
- Video Transmitter DIY Homemade FM Radio Transmitter
- Adjustable Power Supply DIY Battery Charger
- 12V-220V 500 Watt inverter DIY Homemade
- MPPT Solar Charge Controller DIY Homemade
- DIY LA4440 bass amplifier homemade
For more project and circuit diagrams, you can go through the Schematics in the main menu where you can find many interesting projects and circuit diagrams like audio amplifier circuits, voltage booster circuit, battery charger circuit and timer circuits etc., which are all beginner circuit projects. Feel free to check them out!

Thank you for visiting the article.

























