PMBF4391,215 Discrete Semiconductor Products

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
FET Type:	N-Channel
Voltage - Breakdown (V(BR)GSS):	40V
Drain to Source Voltage (Vdss):	40V
Current - Drain (Idss) @ Vds (Vgs=0):	50mA @ 20V
Voltage - Cutoff (VGS off) @ Id:	4V @ 1nA
Input Capacitance (Ciss) (Max) @ Vds:	14pF @ 20V
Resistance - RDS(On):	30 Ohms
Power - Max:	250mW
Operating Temperature:	150°C (TJ)
Mounting Type:	Surface Mount
Package / Case:	TO-236-3, SC-59, SOT-23-3
Supplier Device Package:	SOT-23 (TO-236AB)
Base Part Number:	MBF4391

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 PMBF4391,215 is a unique type of transistor known as a JFET or Junction Field Effect Transistor. It is a three-layer device that uses the electric field to control the flow of current through the device, allowing it to be used as a switch or an amplifier. This article will discuss the application fields and the working principle of the PMBF4391,215 JFET.

Construction

A JFET consists of three main components: the gate, the source and the drain. The gate is the control electrode of the device which applies the electric field to the channel region between the source and drain. The source and drain are two electrodes which are connected to the external circuit and the flow of electric current is controlled by the electric field applied by the gate.

Working Principle

The working principle of the PMBF4391,215 JFET is based on the same principle as all other JFETs. A voltage applied to the gate creates an electric field in the channel between the source and the drain which increases or decreases the resistance of the channel. When the voltage applied to the gate is positive, the channel resistance decreases allowing a greater current flow from source to drain. When the voltage applied to the gate is negative, the channel resistance increases, reducing the flow of current from the source to the drain. In a basic JFET circuit, the gate is connected to a voltage divider which sets the voltage applied to the gate.When a voltage is applied to the gate, the current flow through the device is increased or decreased depending on the applied voltage. This allows the device to be used as a switch or as an amplifier.

Application Field

Due to its unique properties, the PMBF4391,215 JFET is used in various applications. One of the most common applications is as an oscillator. The device can be used as a voltage-controlled oscillator (VCO) which allows the frequency of an oscillating signal to be controlled remotely. The device is also used in amplifier circuits, where the amount of current allowed to flow through the circuit can be precisely regulated. It is also used in power supply circuits where it is used to regulate the output voltage. In addition, the device is also used in digital electronics as both a switch and an amplifier.

Conclusion

In conclusion, the PMBF4391,215 JFET is a versatile device with a wide range of applications. It has a simple construction consisting of three basic components: the gate, the source and the drain. The electric field created by the gate controls the resistance of the channel between the source and the drain, allowing the device to be used as a switch or as an amplifier. The PMBF4391,215 is used in a variety of applications including oscillator, amplifier, power supply and digital electronics.

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

Part Number	Manufacturer	Price	Quantity	Description