Pin Number. Pin Name. Current flows in through collector. Controls the biasing of transistor. Current Drains out through emitter. BC is a PNP transistor hence the collector and emitter will be closed Forward biased when the base pin is held at ground and will be opened Reverse biased when a signal is provided to base pin.
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Alternative transistors for BC are 2N, 2N, BC, BC output pins of some equivalents are different please see pinout details of the equivalent transistor before replacing in the circuit. It is a general purpose PNP transistor that can be used as a switch or amplifier in electronic circuits. The max collector dissipation is milliwatt which is also an another good point to use it in amplification stages. Moreover it will also perform well when used it as a switch for load under mA.
The transistor has also good collector to emitter VCE value that is V, therefore you can easily use it in circuits using 40 to 45 volts DC. Beside these uses BC is also a good general purpose PNP transistor to use in your hobby electronics projects therefore it is a must to have transistor in your electronics LAB.
As mentioned above BC is a general purpose transistor therefore it can be used wide variety of general purpose applications for example it can be used as an audio amplifier in small radios, electronic buzzers, electronic bells and other sound circuits that require small amplification. Due to the good gain of this transistor can also be used in audio preamplifier stages. Beside these uses this transistor can also perform as a switch in electronic applications for mA load, it can be used to switch any part of an electronic circuit, other high-power transistors, LEDs, relays etc.
November 11, December 16, December 5, Your email address will not be published. Save my name, email, and website in this browser for the next time I comment. Applications: Preamplifier Small signal audio amplifier Driving Loads under 0.
BC557B Bipolar Transistor