BC549A B1G

Series:	--
Packaging:	Bulk
Part Status:	Active
Transistor Type:	NPN
Current - Collector (Ic) (Max):	100mA
Voltage - Collector Emitter Breakdown (Max):	30V
Vce Saturation (Max) @ Ib, Ic:	--
Current - Collector Cutoff (Max):	15nA (ICBO)
DC Current Gain (hFE) (Min) @ Ic, Vce:	110 @ 2mA, 5V
Power - Max:	500mW
Frequency - Transition:	--
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

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Introduction

The BC549A, also known as B1G, is a General Purpose NPN Transistor commonly used in electronic circuits. It is a type of single-gate bipolar junction transistor (BJT), and is available in TO-92 and three-lead package styles. It is a small signal device with a gain value between 110 and 800. This makes it very suitable for small signal amplification and switching operations, and it is often used in amplifier circuits, as well as logic and digital circuits.

Applications

The BC549A is mainly used as a general-purpose amplifier and switch in low-power applications. It is ideal for low-frequency audio amplifiers, timing and oscillator circuits, transmission lines and RF amplifiers. It is also often used in a variety of other applications such as power supplies, alarm systems, telephones, security systems and medical equipment.The BC549A is particularly popular for its low-power characteristics and fast switching speed. It is capable of operating at frequencies up to 500kHz, making it ideal for signal amplification in high-frequency circuits. The BC549A can also withstand a peak collector current of up to 200mA, making it suitable for driving medium-power loads. Additionally, the BC549A has a wide range of operating temperatures, from -55C to +150C. This makes it suitable for a wide variety of operating conditions.

Connections and Working Principle

The BC549A is usually connected to a circuit with three leads. The emitter lead is usually connected to the negative terminal of the power supply, and the collector is connected to the load or the positive terminal of the power supply. The base lead is connected to the switching signal, typically a digital signal from an integrated circuit. When the base is at a high voltage, the transistor turns on and allows current to flow from the collector to the emitter. When the base is at a low voltage, the transistor turns off, preventing current from flowing. This switching action is what allows the BC549A to be used as an amplifier and switch in small-signal applications.

Conclusion

The BC549A is a widely used general-purpose NPN transistor with a wide range of operating conditions and fast switching speed. It is suitable for applications such as low-frequency audio amplifiers, timing and oscillator circuits, transmission lines and RF amplifiers. The BC549A is normally connected to a circuit with three leads, and its action as a switch is controlled by the voltage present at the base lead. With its high-current capacity and wide operating temperature range, the BC549A is a reliable and popular choice for many small-signal applications.

The specific data is subject to PDF, and the above content is for reference

Part Number	Manufacturer	Price	Quantity	Description