2N4427 Silicon NPN Transistor Technical Summary

Overview

The 2N4427 is a silicon NPN transistor specifically designed for use in VHF (Very High Frequency) and UHF (Ultra High Frequency) equipment. This transistor is packaged in a TO-39 metal can, providing robust thermal and electrical performance. It is optimized for applications requiring high-frequency amplification, including pre-driver, driver, and output stages in RF circuits. Manufactured by Advanced Power Technology, the 2N4427 is a reliable choice for low-power RF and microwave applications.

Features

• Silicon NPN Construction: Ensures high performance and reliability in RF applications.
• TO-39 Package: Metal can packaging provides excellent thermal dissipation and mechanical durability.
• High Power Output: Delivers a minimum of 1 Watt power output at 175 MHz.
• Wide Bandwidth: Current-gain bandwidth product of 500 MHz at 50 mA.
• High Power Gain: Minimum power gain (G_PE) of 10 dB at 175 MHz.
• Optimized for VHF/UHF: Designed for use in very high and ultra-high frequency circuits.

Applications

The 2N4427 is suitable for a variety of high-frequency applications, including:

• RF Amplifiers: Used in pre-driver, driver, and output stages of RF amplifiers.
• VHF/UHF Equipment: Ideal for transmitters, receivers, and other communication devices operating in the VHF and UHF bands.
• Microwave Circuits: Suitable for low-power microwave applications due to its high-frequency performance.
• Signal Processing: Can be used in signal amplification and processing circuits in communication systems.

Electrical Characteristics

The following specifications are measured at a case temperature (T_case) of 25°C unless otherwise noted.

Static Characteristics

• Collector-Emitter Breakdown Voltage (V_CEO): [Value] (Min)
• Collector-Base Breakdown Voltage (V_CBO): [Value] (Min)
• Emitter-Base Breakdown Voltage (V_EBO): [Value] (Min)
• Collector Cut-off Current (I_CEO): [Value] (Max)
• DC Current Gain (h_FE): [Value] (Min) at specified collector current.

Dynamic Characteristics

• Current-Gain Bandwidth Product (f_T): 500 MHz (Typ) at I_C = 50 mA.
• Power Gain (G_PE): 10 dB (Min) at 175 MHz.
• Output Power (P_out): 1 Watt (Min) at 175 MHz.

Thermal Characteristics

• Thermal Resistance, Junction-to-Case (R_θJC): [Value] °C/W (Max)
• Maximum Junction Temperature (T_J): [Value] °C (Max)

Package Information

The 2N4427 is housed in a TO-39 metal can package, which provides excellent thermal and electrical performance. The package dimensions and pin configuration are as follows:

TO-39 Package Dimensions

• Package Type: TO-39 (Metal Can)
• Diameter: [Value] mm
• Height: [Value] mm
• Lead Spacing: [Value] mm
• Weight: [Value] grams (Approx.)

Pin Configuration

• Pin 1: Emitter (E)
• Pin 2: Base (B)
• Pin 3: Collector (C)

Additional Information

Advanced Power Technology reserves the right to change specifications and information without prior notice. For the most up-to-date datasheets and technical support, visit www.advancedpower.com or contact the factory directly.

Conclusion

The 2N4427 is a high-performance silicon NPN transistor designed for VHF and UHF applications. With its robust TO-39 package, high power output, and excellent gain characteristics, it is well-suited for RF amplifiers and other high-frequency circuits. Engineers and designers can rely on the 2N4427 for reliable performance in demanding RF environments.