The 2SC1740 is an NPN silicon epitaxial planar transistor manufactured by various companies including Foshan Blue Rocket Electronics. It is designed for low-noise amplifier applications, particularly in the audio frequency range. Its key features include low noise figure, high gain, and good linearity.

Applications

• Low-noise amplifiers (LNAs)
• Microphone preamplifiers
• Audio input stages
• Tape recorder amplifiers
• Phono amplifiers

Features

• Low noise figure (typically 1dB)
• High gain (typically 500)
• High collector-emitter voltage (VCEO = 50V)
• High transition frequency (fT = 120 MHz)
• Small signal amplifier

Benefits

• Improved signal-to-noise ratio in audio applications
• Enhanced sensitivity in receiver circuits
• High amplification with minimal distortion
• Stable performance over a wide range of operating conditions
• Suitable for battery-powered devices due to low power consumption

Additional Details

The 2SC1740 typically comes in a TO-92 package. It has a collector current (IC) rating of 50mA and a power dissipation (PC) of 250mW. The DC current gain (hFE) is typically between 200 and 700, allowing for efficient amplification of weak signals. The transition frequency (fT) of 120 MHz indicates its suitability for high-frequency applications as well. Its low noise characteristics make it an ideal choice for sensitive audio and instrumentation circuits. Always refer to the specific manufacturer's datasheet for the most accurate specifications.