BF246B Discrete Semiconductor Products

Series:	--
Packaging:	Bulk
Part Status:	Obsolete
FET Type:	N-Channel
Voltage - Breakdown (V(BR)GSS):	25V
Current - Drain (Idss) @ Vds (Vgs=0):	60mA @ 15V
Voltage - Cutoff (VGS off) @ Id:	600mV @ 10nA
Input Capacitance (Ciss) (Max) @ Vds:	--
Power - Max:	625mW
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:	BF246

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Introduction

BF246B is a kind of Junction Field Effect Transistor (JFET), also known as a junction gate transistor. It is a three-terminal semiconductor device, which has a p-type gate region and an n-type drain and source regions. The drain and source regions form a n-channel. The BF246B is a depletion mode JFET. It has low noise, low input capacitance, low power consumption, and high input impedance. It also provides excellent gain and stability over frequency.

Application field of BF246B

The BF246B is widely used in many applications. It is commonly used in low frequency amplifiers, band pass filters, and active component in oscillatory circuits for tuning. In amplifiers, such as audio amplifiers, the BF246B is used as the main component to control the gain. The high input impedance also enables the amplifier to maintain high-fidelity signals with low distortion.In bandpass filters, the BF246B is used in the intermediate stages to separate a single frequency from others to produce a continuous band of frequencies. It provides maximum gain at certain frequencies of the device. The BF246B is also used in oscillatory circuits, acting as the active component to generate a single frequency of amplified output. It is useful in tuning the frequency to specific values in such applications as radio or television tuners.

Working principle of BF246B

The operation of the BF246B is based on the flow of electrons through a channel between source and drain. The electrodes between source and drain form an n-channel. In order to understand the working principle of the BF246B, you need to understand the flow of electrons through a channel. This is done by two steps:First, when a voltage is applied to the gate terminal, the electrons that are present in the surface states of the gate region will be attracted. Second, when the electrons are attracted to the gate region, they form what is called an electric field. This electric field acts upon the electrons in the channel, creating a depletion region, which blocks the flow of electrons in the channel.The amount of current that flows through the channel is determined by the gate voltage. If the gate voltage is low, the depletion region is larger, and thus the current will be small. However, if the gate voltage is increased, the depletion region is reduced and thus the current will be increased.The BF246B offers many advantages over other kinds of transistors, such as higher gain and better stability over the frequency. The high input impedance of this device also reduces noise distortion and enhances performance. Furthermore, it also has a low input capacitance and low power consumption.

Conclusion

The BF246B is a depletion mode Junction Field Effect Transistor (JFET). It offers many advantages over other kinds of transistors. Its high input impedance makes it suitable for amplifiers, bandpass filters, and oscillatory circuits. The depletion region formed in the channel allows for the current to be adjusted depending on the voltage in the gate, which enhances the performance and the stability of the device. Its low input capacitance and low power consumption also makes it suitable for a variety of applications.

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