The 2SC1172B is an NPN silicon epitaxial transistor manufactured by Toshiba Semiconductor and Storage. It is primarily designed for high-frequency power amplifier applications. This transistor is known for its high gain-bandwidth product and excellent high-frequency characteristics.

Applications

• RF Power Amplifiers: Used as a power amplifier in radio frequency circuits.
• Oscillator Circuits: Employed in oscillator circuits for generating high-frequency signals.
• High-Frequency Amplifiers: Suitable for use in general-purpose high-frequency amplification.
• Communication Equipment: Found in communication devices such as radios and transmitters.
• Instrumentation: Used in test and measurement equipment requiring high-frequency amplification.

Features

• NPN Silicon Epitaxial Transistor: Uses NPN silicon epitaxial technology for high performance.
• High Gain-Bandwidth Product: Offers a high gain-bandwidth product for excellent amplification at high frequencies.
• Low Output Capacitance: Features low output capacitance to minimize signal distortion.
• High Collector Dissipation: Can handle high collector dissipation for power amplification.
• Low Noise Figure: Exhibits low noise figure for sensitive signal amplification.
• TO-220 Package: Available in a TO-220 package for easy heat sinking and mounting.

Benefits

• Efficient Power Amplification: Provides efficient power amplification in RF circuits.
• Improved Signal Quality: Low noise figure and low output capacitance contribute to improved signal quality.
• High-Frequency Performance: High gain-bandwidth product ensures excellent performance at high frequencies.
• Easy Heat Dissipation: TO-220 package facilitates easy heat dissipation.
• Reliable Operation: Robust design ensures reliable operation in demanding applications.

Additional Details: The 2SC1172B typically has a collector-emitter voltage rating of around 60V and a collector current rating of around 3A. The transition frequency (fT) is typically in the MHz range. The operating temperature range is typically -55°C to +150°C. It is important to use proper heat sinking to prevent overheating during operation.