The 2SC2073 or C2073 is a Powerful NPN transistor used in High power audio amplifier circuits and switching circuits. In this article I’m sharing 2SC2073 transistors Pinout, Characteristics and equivalent transistors list for replacements.
Characteristics of 2SC2073 NPN Transistor
- Complementary pair: 2SA940
- Collector Emitter Voltage (VCEO): 150V
- Continuous collector current: 1.5A
- Base current: 0.5A
- Total power dissipation: 25W
- DC current gain: 40-140hFE

2SC2073 Transistor Pinout and Pin Configurations

Pinout Configuration of 2SC2073
| Pin No. | Pin Name | Description |
|---|---|---|
| 1 | Base (B) | Controls the transistor’s switching, small current at base controls large current between the collector and emitter pins. |
| 2 | Collector (C) | This is the main current carrying terminal. connected to load in most circuits. |
| 3 | Emitter (E) | Current flows out through this terminal to ground or negative side of supply. |
Equivalent Transistor for Replacement
- 2SC1448
- 2SD772
- KSC2073
- MJE15030
Applications
- Amplifier circuits
- Switching applications.
- Power amplifier stage
- Voltage regulator circuit
- Signal amplification circuits.



