C945 Datasheet – 60V, 0.15A, NPN Transistor

This is one of the transistor types. It used to amplify or switch electronic signals and is widely used in many electronic circuits. It works by controlling the current flow between the collector and emitter terminals through the base terminal.

Part Number: C945, 2SC945

Function: 60V, 150mA, NPN Transistor

Package: TO-92 Type

Manufacturer: Unisonic Technologies, ETC





The C945, 2SC945 is an audio frequency amplifier high frequency OSC NPN transistor. This Transistor is a type of bipolar junction transistor (BJT) made from silicon, a semiconductor material. This transistor is designed for amplifying or switching electronic signals in various electronic circuits.

NPN Configuration

1. Emitter (N): The heavily doped N-type layer, which is the source of charge carriers (electrons) in the transistor.

2. Base (P): The thin P-type layer, which controls the flow of charge carriers between the emitter and collector.

3. Collector (N): The N-type layer, which collects the charge carriers that pass through the base-emitter junction.


1. Collector-Emitter voltage :  V(br)CBO = 50V

2. Collector current up to 150mA

3. High hFE linearity

4. Complimentary to UTC 2SA733

C945 Pinout

Absolute maximum ratings ( Ta=25°C )

1. Collector to Base Voltage: Vcbo = 60 V

2. Collector to Emitter Voltage: Vceo = 50 V

3. Emitter to Base Voltage: Vebo = 5 V

4. Collector Current: Ic = 150 mA

5. Collector Dissipation : Pc = 750 mW

6. Junction Temperature: Tj = 150°C

7. Storage Temperature: Tsg = -55 ~ +150°C





Other data sheets are available within the file: 2SC945G, 2SC945L, 945G, 945L

C945 Datasheet

C945 pdf


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