BC847ALT1

Series:	--
Packaging:	Cut Tape (CT)
Part Status:	Obsolete
Transistor Type:	NPN
Current - Collector (Ic) (Max):	100mA
Voltage - Collector Emitter Breakdown (Max):	45V
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:	300mW
Frequency - Transition:	100MHz
Operating Temperature:	-55°C ~ 150°C (TJ)
Mounting Type:	Surface Mount
Package / Case:	TO-236-3, SC-59, SOT-23-3
Supplier Device Package:	SOT-23-3 (TO-236)

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Introduction

BC847ALT1 belongs to the BJT family of transistors. It is a single NPN transistor, which is widely used in RF applications. This transistor is most commonly used as a driver in high-frequency switching circuits and also in many other various analog applications.

Application Fields

BC847ALT1 is most suitable for use in RF circuit designs. It can be used in RF amplifiers, oscillators and mixers. It is also used in the temperature sensor circuits, low power oscillators, automotive sensors and data communication systems. In addition, it can also be used as a buffer and driver amplifier. It is well known for its high gain equivalent current and low noise.

Working Principle

BC847ALT1 is a NPN type of transistor, so it works on a biasing principle. It works by having a collector and base connected to a voltage source in such a way that the current is supplied from the voltage source to the emitter-base junction of this transistor. When a voltage is applied to the collector base junction, a current is generated which is also known as the “base current”. This base current will then flow to the emitter of the transistor. The emitter current is proportional to the base current. When the base current is increased, the current flowing from the collector to the emitter also increases, which in turn causes an increase in the voltage drop across the collector and the emitter. This voltage drop is known as the collector-emitter voltage or Vce. In order for the output current of this transistor to increase, it is necessary for the base current to be increased as well. The base current can be increased by increasing the voltage applied to the base of this transistor.

Advantages and Disadvantages

The major advantage of the BC847ALT1 is that it has a wide range of uses. It can be used in RF amplifiers and oscillators, low power oscillators, automotive sensors and data communication systems. It can also be used as a buffer and driver amplifier. Furthermore, it has high gain equivalent current and low noise.The major disadvantage of this transistor is its low collector-base breakdown voltage. This will limit its usefulness in applications that require a high voltage. Furthermore, its switching time can be relatively slow, making it unsuitable for use in high-frequency switching circuits.

Conclusion

The BC847ALT1 is a single NPN transistor, which is widely used in RF applications. It can be used in RF amplifiers and oscillators, low power oscillators, automotive sensors and data communication systems. It can also be used as a buffer and driver amplifier. It has a wide range of uses and has high gain equivalent current and low noise. However, its low collector-base breakdown voltage and slow switching time are notable disadvantages.

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