BC548C

Series:	--
Packaging:	Bulk
Part Status:	Obsolete
Transistor Type:	NPN
Current - Collector (Ic) (Max):	100mA
Voltage - Collector Emitter Breakdown (Max):	30V
Vce Saturation (Max) @ Ib, Ic:	250mV @ 500µA, 10mA
Current - Collector Cutoff (Max):	15nA
DC Current Gain (hFE) (Min) @ Ic, Vce:	420 @ 2mA, 5V
Power - Max:	625mW
Frequency - Transition:	300MHz
Operating Temperature:	-55°C ~ 150°C (TJ)
Mounting Type:	Through Hole
Package / Case:	TO-226-3, TO-92-3 (TO-226AA)
Supplier Device Package:	TO-92-3
Base Part Number:	BC548

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BC548C Application Field and Working Principle

The BC548C NPN Bipolar Junction Transistor (BJT) is a commonly used small signal transistor, from NXP Semiconductors. It is designed for use as a general-purpose amplifier and switch, and it is available in a variety of packages, making it a prime candidate for various types of applications. The BC548C is also classified as a small-signal BJT, making it ideal for many low-noise and linear applications.

Physical Characteristics and Specifications

The BC548C is a tiny device, occupying a quarter-square inch of board space and is available in the TO-92, SOT-23, and SOT-223 packages. Other physical characteristics include a maximum current gain of 425, an operating frequency of 300MHz and a peak power dissipation rating of 625mW. With a switching speed of 250nanoseconds, it is an ideal choice for many low-noise applications that require high-speed operation.The operating voltage range for the BC548C is between 6-36 Volts. In the forward bias mode, the device feature a maximum collector current of 500mA and a DC current gain of 450. In the reverse bias mode, it has a maximum open-collector voltage of 45V. For switching applications, the maximum collector current is 1A with a DC current gain of 125.

Working Principle of BC548C

The BC548C is a three-layer bipolar junction transistor, which consists of an emitter, base, and collector. The BC548C has three pins, an emitter (E), a base (B), and a collector (C). The base is a very narrow layer of semiconductor material between the emitter and collector. It acts as an imperfect insulator between the two layers, allowing current to flow between the emitter and collector when electrical signals are applied to the base.When a small current is applied to the base, it causes electrons to flow between the emitter and collector, creating a small current between the emitter and collector. This current is controlled by the base current. By increasing or decreasing the base current, it is possible to vary the amount of current flowing between the emitter and collector. This is the basic operation of an NPN transistor, and it is the same for the BC548C.

Applications of BC548C

The wide range of the BC548C\'s specifications and its small physical size make it an ideal choice for a wide range of applications. Some of the most common applications include:- Audio amplifiers- Low-noise amplifiers- Switching devices - Automotive electronics- Telecom equipment - Low-power transistor amplifiers - Logic circuits - High-frequency circuits - Power transistorsThanks to its excellent switching speed and reliability, the BC548C is an ideal choice for a variety of industrial, commercial and consumer applications. Its wide operating voltage range, good linearity, and low internal noise make it an attractive choice for many audio and low-noise applications. Additionally, with its small physical size and good power dissipation rating, it can be used for many power transistor applications.

Conclusion

The BC548C is a versatile and reliable NPN bipolar junction transistor from NXP Semiconductors. It is available in a wide range of packages, making it a great choice for a variety of applications. The device has a wide operating voltage range, good linearity, and a high current gain. It also offers fast switching speed and excellent power dissipation rating. Thanks to these features, the BC548C is a popular choice for many small signal, low-noise, and power applications.

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