The BC549 is a popular NPN general-purpose transistor commonly used in low-power amplification and switching applications. It is part of the BC54x series of transistors, which also includes BC547 and BC548. The BC549 is specifically designed for low noise applications and has a higher voltage rating compared to BC547.
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Key Features:-
Type: NPN (Negative-Positive-Negative) transistor: In NPN transistors like the BC549, current flows from the collector (C) to the emitter (E) when a small current is applied to the base (B).
Polarity: The BC549 is an NPN transistor, which means it amplifies or switches electronic signals with a positive voltage at the collector relative to the emitter.
Amplification: The BC549 has a moderate gain, typically ranging from 110 to 800. This makes it suitable for amplification purposes in small-signal applications.
Voltage Ratings: The transistor is often rated for a maximum collector-emitter voltage (VCEO) of around 30 to 50 volts and a collector current (IC) of up to 100 mA.
Package Type: The BC549 is available in various package types, including TO-92, which is a common through-hole package for easy mounting on a PCB.
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