2SC945 60V 150mA Small Signal (BJT) Transistor

The C945 is an age old Japanese Bipolar audio frequency NPN transistor. It has a decent gain value (hfe) of maximum 700 and is highly linear. Hence it was widely used in amplifier applications for pre-amplifying purpose, in high frequency circuits. It is also used as oscillators with is complementary A733 PNP transistor.

When used as a switch it can easily by controlled by a MCU/MPU since it has a base voltage of only 5V. It can switch loads up to 60V but has a very low collector current rating of only 100mA so this transistor is not really a good choice to be used as a switch. A better alternative for switching applications will be 2N2222.

Datasheet:  PDF

Features:

1. Japanese High frequency amplifier NPN Transistor
2. Current Gain (hFE) is 70 to 700 (high linearity)
3. Continuous Collector current (IC) is 150mA
4. Collector-Emitter voltage (VCEO) is 50 V
5. Collector-Base voltage (VCB0) is 60V
6. Emitter Base Voltage (VBE0) is 5V
7. Transition Frequency is 150MHz
8. Available only in To-92 Package

Warning: The C945 is a Japanese NPN transistor and hence the C945 pinout will be in Emitter, Collector.

Applications:

1. Low current switches
2. Pre-amplifiers
3. H-bridge circuits for low power motors
4. Audio frequency amplifier circuits
5. Oscillator circuits

Packing List:

1Pc * 2SC945 60V 150mA Small Signal (BJT) Transistor