2N4239-Transistor by ON Semiconductor | NPN Amplifier Transistor | TO-18 Package

2N4239-Transistor Overview

The 2N4239 transistor is a silicon NPN bipolar junction transistor (BJT) designed for medium power amplification and switching applications. It offers reliable electrical performance with a maximum collector current of 500mA and a collector-base voltage rating of 40V. This transistor is well-suited for industrial electronics, providing stable gain characteristics and moderate frequency response up to 100 MHz. Its robust construction ensures dependable operation in various environments. Engineers and sourcing specialists can rely on this device for efficient signal amplification and switching tasks in both analog and digital circuits. For more detailed information, visit IC Manufacturer.

2N4239-Transistor Key Features

• Medium power capability: Supports collector currents up to 500mA, allowing effective control of moderate load devices.
• High voltage tolerance: With a collector-base voltage of 40V, it ensures safe operation in circuits with elevated voltage requirements.
• Moderate frequency response: Operating up to 100 MHz, suitable for RF amplification and switching applications where speed is essential.
• Stable gain characteristics: Provides consistent current gain (hFE) in the range of 30 to 200, enabling predictable amplification performance.

2N4239-Transistor Technical Specifications

2N4239-Transistor Advantages vs Typical Alternatives

This transistor delivers a balanced combination of voltage handling and current capacity, outperforming many low-power alternatives in medium power applications. Its metal can package offers enhanced thermal dissipation compared to plastic encapsulated devices, increasing reliability. The broad DC gain range ensures flexibility across different circuit designs. Additionally, its frequency response up to 100 MHz makes it more suitable for higher frequency switching than many standard BJTs.

Typical Applications

• Medium power amplification in analog circuits requiring stable gain and moderate frequency response, such as audio preamplifiers and signal conditioning modules.
• Switching transistor in industrial control systems where moderate current loads and voltage levels are present.
• Driver transistor for relay and solenoid control in automation equipment.
• RF amplification stages in communication devices operating up to 100 MHz frequencies.

2N4239-Transistor Brand Info

The 2N4239 transistor is a widely recognized semiconductor device favored by engineers for its reliability and performance in industrial and commercial applications. Often supplied by multiple semiconductor manufacturers, it maintains consistent quality through standardized manufacturing processes. Its TO-18 metal can package is engineered to provide robust mechanical and thermal stability, making it a preferred choice in demanding environments. This product continues to be a dependable component in legacy and modern electronic designs.

FAQ

What type of transistor is the 2N4239 and what is its polarity?

The 2N4239 is an NPN bipolar junction transistor (BJT). This means it uses electrons as the primary charge carriers and is configured with the collector and emitter terminals arranged to allow current flow when the base is appropriately biased.

What is the maximum collector current rating of the 2N4239 transistor?

This transistor supports a maximum continuous collector current of 500 milliamperes, suitable for medium power applications that require moderate load control without exceeding this limit.

Can the 2N4239 transistor be used in high-frequency applications?

Yes, the device has a transition frequency (fT) of approximately 100 MHz, which enables it to function effectively in RF amplification or switching circuits operating at moderate high frequencies.

What package type is used for the 2N4239 transistor, and what are its benefits?

The transistor is housed in a TO-18 metal can package. This package provides excellent thermal conductivity and mechanical robustness, improving heat dissipation and durability compared to plastic alternatives.

Is the 2N4239 suitable for switching applications in industrial control systems?

Absolutely. With its voltage and current ratings, stable gain, and reliability, this transistor is well-suited for switching moderate power loads in industrial automation and control circuits.