2SC1971 Pinout, Equivalent, Applications and Other Details

If you are looking for a transistor that can be suitable for RF applications than 2SC1971 can be an ideal transistor. In this post we are going to discuss about 2SC1971 pinout, equivalent, applications and other details about this TO-220 package RF transistor.


2SC1971 Pinout, Equivalent, Applications and Other Details




Features / Technical Specifications

  • Package Type: TO-220
  • Transistor Type: NPN
  • Max Collector Current(IC): 2A
  • Max Collector-Emitter Voltage (VCE): 17V
  • Max Collector-Base Voltage (VCB): 35V
  • Max Emitter-Base Voltage (VEBO): 4V
  • Max Collector Dissipation (Pc): 12.5W
  • Max Output Power: 7 Watts
  • Minimum & Maximum DC Current Gain (hFE): 10 – 180
  • Max Storage & Operating temperature: -55 to +150 Centigrade


Replacement and Equivalent

2SC1972, 2SC1978, 2SC2867, 2SC2907


2SC1972 Transistor Explained / Description

2SC1971 is a high power RF transistor that can be used as a RF oscillator and RF amplifier in wide variety of RF applications under 175MHz. The max output power this transistor is capable to provide is 7 Watts and it can easily be used in 4 to 5 watts output applications. The max collector dissipation of the transistor is 12.5 watts and the max DC current gain is 10-180. The transistor can not only used for RF applications but it can also be used as a switch and it can drive load of upto 2A with 2A output current it can drive many types of high power relays, transistors, LEDs etc.


Where We Can Use it & How to Use

2SC1971 transistor can be used in wide variety of radio and RF applications such as RF amplifiers, RF oscillator, wireless data transmission, TV sets etc. Other than that it can also be used in verity of general switching applications that falls under its ratings.



RF Amplifier Circuits

Radios Circuits

RF Oscillator Circuits

TV Sets

Switching loads under 2000mA.


How to Get Long Term Performance in a Circuit

For long term performance it is suggested to use any component atleast 20% below from its maximum ratings, and same goes with 2SC1971, the maximum collector current of the transistor is 2A therefore do not drive load of more than 1.6A, the max collector to emitter voltage is 17V therefore do not drive load of more than 13.6V. Do not drive output power of more than 5 watts, use a proper heatsink with the transistor and always store or use this transistor in temperature above -55 degree Celsius and below +150 degree Celsius.



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