2SC945 N-Channel Transistor 50V 0.1A

The 2SC945 N-Channel Transistor is a highly dependable small-signal silicon NPN device widely recognized for its low-noise performance and stable gain characteristics. Although it was originally developed for Japanese audio and radio systems, it has remained an essential component for technicians and hobbyists. Moreover, because production of many classic semiconductors has slowed or ceased, the original 2SC945 has become new and rare, which significantly increases its value for authentic restoration projects. Consequently, this component is now considered one of the most desirable small-signal transistors for vintage repairs.

In addition, this transistor is supplied in brand-new condition, ensuring exceptional reliability, long service life, and consistent performance in both audio amplification and low-power switching applications. Therefore, it is an excellent choice for anyone aiming to maintain the original quality of classic electronics.

Key Features

• Low-noise NPN silicon structure for superior audio clarity

• Stable DC gain suitable for a wide range of analog circuits

• Compact TO-92 package that simplifies PCB installation

• Highly durable even under continuous low-power operation

• Rare and hard-to-find original component for restoration work

Typical Applications

• Audio preamplifier stages in radios, amplifiers, and cassette decks

• Low-power switching and control circuits

• Signal processing in analog devices

• DIY electronics projects and educational kits

• Repair and restoration of vintage Japanese audio equipment

Furthermore, the 2SC945 N-Channel Transistor remains a trusted component because technicians appreciate its predictable behavior, low distortion, and consistent gain distribution. As a result, it continues to outperform many modern alternatives when authentic analog sound is required.

Datasheet Specifications:2SC945 N-Channel Transistor 50V 0.1A

• Transistor Type: NPN Small-Signal Transistor

• Collector–Emitter Voltage (Vceo): 50 V

• Collector–Base Voltage (Vcbo): 60 V

• Emitter–Base Voltage (Vebo): 5 V

• Collector Current (Ic): 0.1 A (100 mA)

• Power Dissipation: 400 mW

• DC Current Gain (hFE): 70–700

• Transition Frequency (ft): 150 MHz (typical)

• Package: TO-92

• Pinout:

  1. Emitter

  2. Collector

  3. Base