BC556 PNP Transistor: Pinout, Datasheet, and Equivalent

The BC556 is a general-purpose PNP bipolar junction transistor mainly employed in switching and AF (audio frequency) amplifier applications. The collector-emitter voltage of the BC556 is -65V therefore it can be used to drive loads up to -65V DC with a max 100mA current. With a 500mW collector dissipation (Pc) and 110 to 800 DC current gain, the BC556 can also be used in a variety of general signal amplification and audio preamplification purposes.

The BC556 is manufactured in three different part numbers, BC556A, BC556B, and BC556C. The only difference between them is their hFE values. The BC556 has a current gain between 110 and 800. The BC556A ranges from 110 to 220, BC556B ranges from 200 to 450, and BC556C ranges from 420 to 800.

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3D Model

• Package Type: TO-92

• Transistor Type: PNP

• Max Collector Current (IC): -100 mA

• Max Collector-Emitter Voltage (VCE): -65 V

• Max Collector-Base Voltage (VCB): -80 V

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

• Max Collector Dissipation (Pc): 500 mW

• Max Transition Frequency (fT): 100 MHz

• DC Current Gain (hFE): 110 to 800

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

Rochester Electronics, LLC BC556 technical specifications, attributes, parameters and parts with similar specifications to Rochester Electronics, LLC BC556.

The BC556 is a general-purpose transistor mainly employed in switching and AF (audio frequency) amplifier applications. It can be used as a preamplifier or in preamplifier stages, as an audio amplifier or in audio amplifier stages, or in any other type of general signal amplification application. We can also use it as a switch to drive loads under 100mA. The 100mA collector current is quite enough to drive small loads in electronic circuits like relays, LEDs, high power transistors, etc. Moreover, with the -5V emitter-base voltage, the BC556 can also be used at the output of microcontrollers.

• Preamplifier

• General-purpose audio amplifier

• General signal amplification

• Darlington pair

• Drive load under 100mA

• H-Bridge circuits

• Current mirror circuits

• Linear amplifiers

• Impedance buffering

• Switching applications

• Bistable multivibrators

• Astable vibrator

• Oscillator circuits

• Comparator circuits

Rochester Electronics is the largest continuing source manufacturer of semiconductors in the world. With product licensing from leading manufacturers such as Analog Devices, Altera, Cypress, Fairchild, Freescale, Infineon, Intel, NXP, Renesas and Texas Instruments, Rochester continues to manufacture and distribute mature products. For industrial, transportation and hi-reliability markets, this extension of product life is critical for long term production and maintenance. With over 100,000 products and 15 billion units in stock, no other company compares to our selection, capabilities or solutions.

Download datasheets and manufacturer documentation for Rochester Electronics, LLC BC556.