The 2SC4627 is a silicon NPN epitaxial planar transistor manufactured by Panasonic. This transistor is designed for high-frequency amplifier applications, particularly in VHF and UHF bands. It is commonly used in various communication devices and RF circuits, appreciated for its good gain and low noise characteristics.

Applications

• VHF/UHF Amplifiers
• Oscillators
• Mixers
• FM radio receivers
• Television tuners

Features

• High Gain: Provides substantial signal amplification.
• Low Noise Figure: Minimizes added noise in the receiver chain.
• High Transition Frequency (fT): Suitable for VHF and UHF applications.
• Small Package: Allows for compact circuit designs.
• Epitaxial Planar Structure: Offers improved performance and reliability.

Benefits

• Improved Receiver Sensitivity: The low noise figure enhances the ability to detect weak signals.
• Increased Signal Strength: High gain amplifies signals, improving overall performance.
• Stable Operation: Designed for reliable performance in demanding RF applications.
• Compact Design: Small package facilitates integration into space-constrained devices.
• Enhanced Signal Quality: Minimizes distortion and noise in the amplified signal.

Additional Details

The 2SC4627 typically features a noise figure of around 1.5 dB at VHF frequencies. Its transition frequency (fT) is high, enabling operation well into the UHF band. The transistor is typically biased with a collector current in the range of a few milliamperes and a collector-emitter voltage of several volts. The specific package is designed to minimize parasitic inductance and capacitance, which is crucial for high-frequency performance. It is important to carefully select biasing components to achieve optimal performance in amplifier circuits.