2N3994

• Low noise silicon NPN transistor
• Designed for use in VHF and UHF amplifiers
• High transition frequency (ft) of 900 MHz
• Low input capacitance
• Low collector-emitter saturation voltage
• Compact TO-92 package
• Suitable for high-frequency applications

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The 2N3994 is a silicon NPN transistor designed for audio power amplifier applications. It features a collector-base voltage (VCBO) of 70V, an emitter-base voltage (VEBO) of 6V, and a collector current (IC) rating of 500mA. The transistor is housed in a TO-106 package, which is a small plastic package with three leads. The 2N3994 has a maximum power dissipation of 625mW at 25°C, a transition frequency (ft) of 125MHz, and a gain-bandwidth product (fT) of 12.5MHz. It also has a low saturation voltage of 0.3V at a collector current of 150mA. This transistor is commonly used in audio amplifiers, oscillator circuits, and switching applications due to its high current and voltage ratings. Its high transition frequency makes it suitable for high-frequency applications as well. The 2N3994 is known for its reliability and stability, making it a popular choice among hobbyists and professionals alike. In conclusion, the 2N3994 is a versatile NPN transistor with high power dissipation, voltage, and current ratings, making it suitable for a wide range of applications in audio amplifiers and other electronic circuits