The 2SC3181 is a silicon NPN epitaxial planar transistor manufactured by Toshiba Semiconductor and Storage. It's primarily designed for use in low-noise amplifier applications, particularly in the VHF and UHF bands. Its high gain and low noise figure make it suitable for sensitive receiver circuits.

Applications

• Low-noise amplifiers (LNAs)
• VHF/UHF receiver front-ends
• TV tuners
• Communication equipment
• Oscillators

Features

• Low noise figure
• High gain
• High transition frequency
• NPN silicon epitaxial planar transistor

Benefits

• Improved signal sensitivity in receivers
• Reduced interference and noise
• Enhanced performance of communication systems
• Stable operation

Technical Specifications

The 2SC3181 transistor commonly features these specifications:

• Collector-Base Voltage (VCBO): 25 V
• Collector-Emitter Voltage (VCEO): 15 V
• Emitter-Base Voltage (VEBO): 3 V
• Collector Current (IC): 30 mA
• Collector Dissipation (PC): 200 mW
• Transition Frequency (fT): 6.5 GHz (typical)
• Noise Figure (NF): 1.5 dB (typical) at 2 GHz

The 2SC3181 excels in applications where minimizing noise is critical. Its design ensures that weak signals can be amplified without significant degradation, making it valuable in sensitive communication systems. The epitaxial planar structure contributes to its reliability and stable performance. It's frequently used in the front-end stages of receivers to improve overall system sensitivity and signal-to-noise ratio. Its high transition frequency allows for effective operation in high-frequency applications. Its compact size makes it suitable for use in portable and miniature devices.