2SC1061 NPN Power Transistor

2SC1061 Transistor
2SC1061 Transistor
2SC1061 Pinout
2SC1061 Transistor
2SC1061 Pinout

click on image to enlarge

The 2SC1061 is a NPN Power Transistor in To-220 package. It has a DC current gain from 35 to 320 and transition frequency of 5MHz. It is commonly used in high power amplifier application along with its complementary PNP part 2SA671.


Pin Description

Pin Number

Pin Name




Controls the biasing of transistor, Used to turn ON or OFF the transistor



Current flows in through collector, normally connected to load



Current Drains out through emitter, normally connected to ground



  • NPN Power Transistor
  • Low Frequency High Power amplifier
  • Continuous Collector current (IC) is 3A
  • Collector-Emitter voltage (VCE) is 50 V
  • Collector-Base voltage (VCB) is 50
  • Emitter Base Voltage (VBE) is 4V
  • DC Current Gain (hfe): 35 to 320
  • Available in To-220 Package


Note: Complete Technical Details can be found at the 2SC1061 datasheet given at the end of this page.


Complementary PNP Transistor 



Equivalent NPN Transistors 



Other Power Transistor 

N3055, 2N6107, 2SC5200, 2SA1943, BD136, TIP32C


Where to use 2SC1061

2SC1061 is a NPN Power transistor commonly used in amplifier designs. Based on the model of the transistor the gain of the transistor varies between 35 to 320. The below table from datasheet can help you identify the gain value of your transistor based on the part number.

Where to use 2SC1061

It also has a high collector current of 3A and a collector to emitter voltage of 50V making it suitable for high power audio amplifier circuits. Since the transistor also has its PNP counterpart 2SA671. Both the transistor is used in Class B amplifier design. The Transistor has a low transition frequency of only 5MHz and hence cannot be used in high speed switching or high frequency amplifiers.


The gain of the transistor also depends on the Collector Emitter voltage and Collector Current of the transistor. As the collector current increase the gain decreases the below graph can be used to calculate the gain value based on collector current.

Collector Current Graph of 2SC1061



  • Class B amplifier designs
  • Low Frequency Audio amplifier
  • High Power audio amplifier
  • Large signal amplification
  • General purpose switching.



2D dimensions will help you in placing this component at the time of making circuit on perf board or a PCB.

2SC1061 NPN Power Transistor 2D model

2SC1061 NPN Power Transistor Dimension

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