BC546A

Series:	--
Packaging:	Bulk
Part Status:	Active
Transistor Type:	NPN
Current - Collector (Ic) (Max):	100mA
Voltage - Collector Emitter Breakdown (Max):	80V
Vce Saturation (Max) @ Ib, Ic:	600mV @ 5mA, 100mA
Current - Collector Cutoff (Max):	15nA (ICBO)
DC Current Gain (hFE) (Min) @ Ic, Vce:	110 @ 2mA, 5V
Power - Max:	500mW
Frequency - Transition:	300MHz
Operating Temperature:	-65°C ~ 150°C (TJ)
Mounting Type:	Through Hole
Package / Case:	TO-226-3, TO-92-3 (TO-226AA)
Supplier Device Package:	TO-92

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BC546A Application Field and Working Principle: Transistors – Bipolar (BJT) – SingleThe BC546A is a single, small-signal bipolar junction transistor (BJT) that is designed for general-purpose amplification and switching in applications such as voltage regulators, audio amplifiers, and consumer electronics. It is made from alloy junction diffusion technology, with a silicon substrate, PN junction and capacitor, and produces excellent junction characteristics.The transistor is made from 3 layers of alternately N-type and P-type semiconductor layers, forming an absorptive region or junction between them. The base and collector are at the center of the device, with the emitter at the edge. When biased with a voltage, the transistor amplifies the input signal in the device, allowing it to be used as a switch or amplifier. The transistor is intended for use with relatively DC operated circuits, where the need for high-frequency response is minimal.The BC546A is a low-power switch and has high current gain, which makes it suitable for use in low-power circuits. It is commonly used in consumer electronics, such as consumer audio devices. It is often used in consumer audio devices to switch between different inputs, such as CD players, cassette players, and PCs.The BC546A also serves as an amplifier, providing relatively simple amplification that can be used to drive an audio amplifier. This makes it a popular choice for consumer audio applications. Additionally, it can be used for voltage regulation due its low-power switching capabilities.The BC546A is able to handle up to 500mA of current, with low heat dissipation. This allows it to be used in high-power circuits. It has a low gain-bandwidth (GBW) product, typically 30MHz.The BC546A is a relatively low-cost transistor and is widely available. It is capable of being operated at temperatures ranging from -55°C to 150°C, making it useful in a variety of applications.The BC546A is typically given a circuit label of "BC546A", or a unique identifier such as "TFU 64325". Additionally, manufacturers often list the device type and its part number in the datasheet. Datasheets describe the operating and electrical characteristics of the device in great detail. They can be sourced from component vendors or component manufacturers. The datasheets provide further details on the unique characteristics of the device as well as its performance characteristics.In summary, the BC546A is a single, small-signal bipolar junction transistor that is designed for general-purpose amplification and switching. It has a low gain-bandwidth product, making it suited for low-frequency applications, and can handle up to 500mA of current. The transistor is relatively low-cost, widely available, and is capable of being operated over a wide range of temperatures.

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