BFU520VL

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Transistor Type:	NPN
Voltage - Collector Emitter Breakdown (Max):	12V
Frequency - Transition:	10.5GHz
Noise Figure (dB Typ @ f):	1.1dB @ 1.8GHz
Gain:	17.5dB
Power - Max:	450mW
DC Current Gain (hFE) (Min) @ Ic, Vce:	60 @ 5mA, 8V
Current - Collector (Ic) (Max):	30mA
Operating Temperature:	-40°C ~ 150°C (TJ)
Mounting Type:	Surface Mount
Package / Case:	TO-253-4, TO-253AA
Supplier Device Package:	SOT-143B
Base Part Number:	BFU520

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Introduction

BFU520VL is a monolithic VHF/UHF preamplifier, mainly used in the field of radio frequency (RF) signal power reception. It has high gain, low distort, small size, low power consumption and superior high frequency characteristic. Because of its reliable performance, low cost and easy installation, the BFU520VL has become a widely used preamplifier in RF and wireless communication projects.

Application Field of BFU520VL

The BFU520VL has a wide range of applications. It is mainly used to amplify weak signals in the field of wireless communication, radio and TV broadcasting, mobile communication and other fields.This preamplifier has resulted in the increased accuracy of measurements in the communication and electronics arrangement, because of its superior high-frequency characteristic. It can amplify weak signals, increasing the distance of transmission. In addition, it can also control and adjust automobile engine, audio-visual equipment, industrial equipment and other instruments.

Working Principle of BFU520VL

BFU520VL is a monolithic high-frequency VHF/UHF preamplifier. Its working principle is based on a voltage-controlled amplifier. A voltage swing into the base of the transistor controls the current that runs through the collector and emitter, which changes the gain according to the voltage input. BFU520VL consists of a common emitter transistor stage and an integrated dc-controlled biasing network, which allows an adjustable gain of up to 40 dB. The input signal is applied to the emitter and amplified by the transistor, while the output is taken across the collector. The gain can be adjusted by varying the dc bias voltage applied to the base of the transistor. The BFU520VL has a low input impedance and is typically used with a 50 ohm or 75 ohm impedance matching circuit, to ensure maximum signal transfer.

Advantages of BFU520VL

The BFU520VL has a number of advantages over other types of preamplifiers. Firstly, it has lower power consumption, leading to reduced operating costs for equipment. It is also small in size and easy to install, making it ideal for applications where space is limited.Additionally, the BFU520VL has a high gain and excellent high-frequency characteristic, resulting in increased accuracy of measurements and better transmission. Finally, the adjustable gain feature of the BFU520VL allows for the use of a single device for multiple applications.

Conclusion

BFU520VL is a monolithic VHF/UHF preamplifier mainly used in the field of radio frequency (RF) signal power reception. It has high gain, low distort, small size, low power consumption and superior high frequency characteristic, making it a widely used preamplifier in the field of wireless communication and electronics. Its working principle is based on a voltage-controlled amplifier, and it provides a wide range of advantages to users such as low power consumption, small size and adjustable gain.

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