The 2N3963 is a silicon planar epitaxial transistor, designed for low noise amplifier applications. It is encased in a TO-18 package, making it suitable for through-hole mounting on PCBs. This NPN transistor is characterized by its high gain and low noise figure, catering to sensitive amplifier stages where signal integrity is crucial.

Applications:

• Low-noise amplifiers (LNA) in radio frequency (RF) receivers
• Instrumentation amplifiers for precision measurement equipment
• Audio preamplifiers for high-fidelity sound systems
• Oscillators and mixers in communication circuits
• General-purpose amplification and switching applications

Features:

• NPN Silicon Planar Epitaxial Transistor
• TO-18 Package for Through-Hole Mounting
• High Current Gain (hFE)
• Low Noise Figure
• High Transition Frequency (fT)
• Low Collector-Base Capacitance (Cob)

Benefits:

• Excellent low-noise performance enhances signal clarity in sensitive applications.
• High gain ensures efficient amplification of weak signals.
• TO-18 package facilitates easy integration into existing circuit designs.
• Reliable performance due to silicon planar epitaxial construction.
• Suitable for a wide range of linear amplifier and switching circuits.

Additional Details:

The 2N3963's electrical characteristics include a collector-emitter voltage (VCEO) typically around 12V, collector current (IC) around 20mA and a power dissipation of approximately 200mW at 25 degrees Celsius. The transistor’s transition frequency (fT) measures in the range of hundreds of MHz allowing usage at higher frequencies. Its low noise figure, usually around 3dB, makes it well-suited for the first stage of sensitive receivers. Its hFE is usually tested at a collector current of 1mA. The device is also known for its relatively low collector-base capacitance, minimizing unwanted feedback and oscillations in high-frequency circuits.