BC550 NPN Transistor: Pinout, Datasheet, and Equivalents

The BC550 is another popular NPN bipolar junction transistor that belongs to the BC547 series. The BC550 is widely used for general-purpose applications in commercial appliances and also in educational and hobby electronic projects. The BC550 can be used in switching and amplification applications in electronic circuits. When used as a switch, it can handle a load up to 100mA. The maximum collector dissipation is 500mW and the max DC current gain is 800 therefore it can also be used as a signal amplifier or preamplifier.

The BC550 transistor has a current gain between 110 and 800. The gain of the BC550A ranges from 110 to 220, BC550B ranges from 200 to 450, BC550C ranges from 420 to 800, and BC550CG ranges from 420 to 800.

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3D Model

• Package Type: TO-92

• Transistor Type: NPN

• Max Collector Current(IC): 100 mA

• Max Collector-Emitter Voltage (VCEO): 45 V

• Max Collector-Base Voltage (VCBO): 50 V

• Max Emitter-Base Voltage (VEBO): 5 V

• Power Dissipation (PD): 500 mW

• Max Transition Frequency (fT): 300 MHz

• DC Current Gain (hFE): 110 - 800

• Storage & Operating temperature: -65 to +150 Centigrade

ON Semiconductor BC550 technical specifications, attributes, parameters and parts with similar specifications to ON Semiconductor BC550.

The BC550 can be used in a variety of general applications. It can drive loads under 100mA, which is used in various circuits to drive relays, power transistors, LEDs, ICs, microcontrollers, etc. The emitter-base voltage of the BC550 is only 5V, therefore it can be used at the output of the microcontroller to drive loads. Besides that, the BC550 can also be used as an amplifier for audio and any other small signals. And it can also be used as an audio preamplifier or preamplifier for any small electronic signals.

• Darlington Pairs

• Audio Amplification & Preamplification

• Signal Amplification

• Microcontrollers Output

• Switching Loads Under 100mA

• Switching Relays and LEDs

• PWM Driven Application

• LED Dimmers or Flashers

• H-Bridge circuits

• Current mirror circuits

• Impedance buffering

• Bistable multivibrators

• Astable vibrator

• Oscillator circuits

• Comparator circuits

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Download datasheets and manufacturer documentation for ON Semiconductor BC550.