The 2SC2078 is a high frequency NPN silicon power transistor. This transistor is commonly used in 27 MHz RF power amplifiers, RF transmitters, CB radios, walkie talkies and communication equipment. It comes in a TO-220 package and offers high gain, high breakdown voltage and good efficiency in RF amplification stages. So in this article describes the Pinout, features and equivalent transistors details.
2SC2078 Transistor Pinout
Hold the transistor front in facing you and the metal side at that back, the three pins need to points downward. After that count the transistor pin from left to right. The Pin 1 is Base, Pin 2 is collector and Pin 3 is emitter.
| Pin Number | Pin Name |
|---|---|
| 1 | Base |
| 2 | Collector |
| 3 | Emitter |
Features of 2SC2078
Type: NPN RF Power Transistor
Package: TO-220 package
Purpose: Designed for 27 MHz RF power amplifier circuits
High current capability,
- IC = 3A continuous
- ICM = 5A peak
High breakdown voltage,
- VCEO = 75V
- VCBO = 80V
Low saturation voltage (VCE(sat) ≈ 0.15–0.6V)
High gain (hFE = 25–200) depending on classification
High transition frequency (fT = 100MHz) ideal for RF stages
Good thermal performance with heatsink use
- Collector-Base Voltage (VCBO): 80V
- Collector-Emitter Voltage (VCEO): 75V
- Emitter-Base Voltage (VEBO): 5V
- Continuous Collector Current (IC): 3A
- Peak Collector Current (ICM): 5A
- Power Dissipation (TC = 25°C): 10W
Equivalent Transistor for Replacement
- 2SC1971
- 2SC2166
- 2SC2314
- 2SC2053
- 2SC2058
Applications
- 27 MHz RF power amplifiers.
- CB radio transmitters.
- RF signal boosters.
- VHF/UHF pre-driver stages.
- Walkie talkies.
- HAM radio equipment.
- General high frequency amplification.
