2N2945A-Transistor PNP Power Amplifier Transistor in TO-3 Metal Can Package by ON Semiconductor

2N2945A-Transistor Overview

The 2N2945A is a robust PNP bipolar junction transistor designed for medium power amplification and switching applications. It features a high voltage rating and reliable current handling capabilities, making it suitable for a wide range of industrial and electronic designs. With its complementary relationship to NPN transistors, this device supports push-pull amplifier configurations and power regulation tasks. Engineers and sourcing specialists benefit from its stable performance, thermal reliability, and industry-standard package, ensuring ease of integration in various circuits. For detailed technical support and procurement, visit IC Manufacturer.

2N2945A-Transistor Technical Specifications

2N2945A-Transistor Key Features

• High Current Handling: Supports collector currents up to 10 A, enabling effective power amplification and switching in demanding applications.
• Robust Voltage Ratings: With a collector-emitter voltage rating of 60 V, it ensures stable operation in circuits requiring moderate voltage tolerances.
• Thermal Stability: The TO-3 metal can package provides excellent heat dissipation, enhancing reliability under continuous or high load conditions.
• Complementary Pairing: Designed as a PNP transistor complement to common NPN counterparts, facilitating push-pull amplifier designs and complementary symmetry circuits.

Typical Applications

• Audio power amplifiers: Ideal for output stages where medium power and linear amplification are required, ensuring clear sound reproduction with minimal distortion.
• Switching regulators: Effective in power management circuits, providing efficient current control and voltage regulation in industrial systems.
• Motor control circuits: Suitable for driving motors in automation and control applications, thanks to its high current and voltage capabilities.
• General purpose power switching: Applicable in relay drivers, solenoid controls, and other medium power switching uses across various electronic devices.

2N2945A-Transistor Advantages vs Typical Alternatives

This transistor stands out by combining a high maximum collector current with solid voltage ratings and thermal management in a durable TO-3 package. Compared to typical alternatives, it offers superior reliability and power dissipation, making it ideal for applications requiring sustained operation under load. Its complementary nature allows designers to implement efficient push-pull configurations, enhancing circuit linearity and reducing distortion. These advantages deliver enhanced performance and longevity in industrial and audio power electronics.

2N2945A-Transistor Brand Info

The 2N2945A is a well-established transistor originally introduced by General Electric and later manufactured by various semiconductor producers, including ON Semiconductor and Motorola legacy lines. It is recognized as a classic PNP power transistor, widely used across multiple industries since the 1960s. Its consistent availability and proven performance have made it a trusted component in audio amplifiers, power supplies, and switching circuits. The TO-3 metal can packaging remains popular for its thermal advantages and durability, supporting long-term reliability in demanding applications.

FAQ

What is the maximum collector current the 2N2945A can handle?

The transistor can safely handle collector currents up to 10 A. This high current capacity makes it suitable for medium power amplification and switching tasks in a variety of electronic circuits.

What package type does this transistor use, and why is it important?

The device is housed in a TO-3 metal can package, which provides excellent heat dissipation and mechanical durability. This packaging