Understanding the 2N6515 pinout is essential for designing high-voltage switching circuits, signal amplifier stages, bias networks, and general-purpose electronic systems. The 2N6515 NPN transistor offers excellent voltage tolerance, stable gain, and reliable operation in low-current, high-voltage environments. This article covers its pin configuration, key features, datasheet specifications, working principle, applications, and compatible substitutes to help you integrate the 2N6515 effectively into modern circuits.

Introduction to 2N6515 NPN Transistor
The 2N6515 is a high-voltage NPN bipolar junction transistor designed for low-current switching, signal amplification, and general-purpose electronic circuits. With a high voltage rating of 250V, compact TO-92 package, and consistent performance, it is commonly used in control circuits, driver sections, high-voltage sensing, and regulated power stages. Its stability and low power dissipation make it suitable for portable and industrial electronic designs.
2N6515 NPN Transistor

Pinout of 2N6515

Pin Configuration of 2N6515 Pinout
| Pin# | Pin Name |
|---|---|
| 1 | Emitter |
| 2 | Base |
| 3 | Collector |
Understanding the 2N6515 Pinout Configuration
The 2N6515 pinout follows the E-B-C (Emitter–Base–Collector) layout when viewed from the front (flat side facing you).
- Emitter – Current output path
- Base – Controls transistor operation
- Collector – Load connection or high-potential input
Correct identification of these pins ensures safe operation, prevents accidental shorting, and maintains proper performance in high-voltage circuits.
Key Features of 2N6515 Transistor
- High-voltage handling capability
- Suitable for general-purpose low-current switching
- Stable gain and good linear performance
- Fast switching response
- Compact and thermally efficient TO-92 design
2N6515 Transistor Datasheet and Specifications
- Collector–Emitter Voltage (VCEO): 250V
- Collector–Base Voltage (VCBO): 250V
- Emitter–Base Voltage (VEBO): 5V
- Collector Current (IC): 500mA
- Total Power Dissipation (PT): 625mW
- DC Current Gain (hFE): Datasheet dependent
- Transition Frequency (fT): Depends on test conditions
- Package Type: TO-92
- Pin Configuration: E-B-C
Working Principle of 2N6515 Transistor
The 2N6515 operates as a standard NPN BJT where a small base current controls a larger flow of collector-to-emitter current. When the base-emitter junction is forward biased, the transistor turns ON, allowing current to pass through the collector. Due to its high voltage rating, the 2N6515 is ideal for high-voltage sensing, level shifting, and small-signal switching where voltage safety margins are important.
More Circuit Layouts








Applications of 2N6515 Transistor
- High-voltage signal switching
- Level-shifting circuits
- Voltage sensing and feedback stages
- Low-current driver circuits
- High-impedance amplifier stages
- General-purpose electronics and hobby projects
Equivalent and Alternative Transistors
Possible equivalents include:
(Always confirm pinout differences before use.)
Frequently Asked Questions (FAQ)
Q1: What is the pin configuration of the 2N6515?
The pinout is E-B-C in TO-92 package.
Q2: Can the 2N6515 handle high current?
No, it is designed for low-current applications up to 500mA.
Q3: Is 2N6515 good for audio circuits?
It can be used in small-signal amplifier stages but not for high-power audio outputs.
Q4: Can it replace MPSA42?
Yes, in many high-voltage low-current circuits, but verify the pinout.
Conclusion
The 2N6515 is a reliable, high-voltage NPN transistor ideal for low-current switching, signal control, and sensing circuits. Its 250V voltage capability and TO-92 compact design make it suitable for regulated power supplies, high-voltage drivers, and general-purpose electronics. Understanding the 2N6515 pinout and its specifications ensures proper performance, safety, and long-term reliability in high-voltage designs.
Datasheet & Pinout of 2N6515 NPN Transistor
Click the following Button to download the datasheet of 2N6515 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.

























