Applications: automotive, medical, power supply, BMS, industrial control, electronic cigarettes, digital consumer products, etc.
Medium and low voltage MOSFET
Medium and low voltage MOSFET is a field effect transistor mainly used in low voltage applications. Its operating voltage is generally between tens of volts and hundreds of volts. They use electric field effects to control the flow of current in a conductor without relying on current flow to the gate, enabling high input impedance and fast switching characteristics. Medium and low voltage MOSFETs are widely used in electronic equipment, especially in fields such as switching power supplies, DC-DC converters, and motor controls.
Main Features:
1. Fast switching capability: Able to achieve fast switching operations, suitable for high-frequency applications.
2. Low on-resistance: Exhibits lower R_DS(on), thereby reducing power loss.
3. High Input Impedance: High input resistance helps reduce drive current requirements.
application：
switching power supply
Motor drive
High frequency signal amplification
Various electronic control circuits
Diode is a semiconductor device with two electrodes (anode and cathode) that is primarily used to allow current to flow in one direction. Diodes can be divided into ordinary diodes and special diodes (such as Zener diodes, Schottky diodes, etc.) according to different functions.
Main Features:
1. One-way conductivity: Allows current to flow in only one direction, preventing reverse current.
2. Voltage drop: There will be a fixed voltage drop when conducting forward (about 0.7V for silicon diodes, 0.3V for Schottky diodes).
3. Fast Response: Suitable for high frequency applications, especially Schottky diodes.
application:
Rectifier circuit
Protection circuits (e.g. reverse polarity protection)
Voltage stabilization (Zener diode)
High frequency switching circuit (Schottky diode)
Transistor is a semiconductor device with three electrodes (emitter, base and collector) and is divided into two types: NPN and PNP. The control mechanism of the triode is to control the current between the emitter and collector through the tiny current of the base, and has amplification and switching functions.
Main Features:
1. Current amplification: It can amplify small current into large current and is a basic component used for signal amplification.
2. Switching characteristics: Can be used as a switch to quickly switch on and off states.
3. Simple drive: Relatively easy to drive and suitable for a variety of control applications.
application:
amplifier circuit
switching circuit
Oscillators and modulators
Signal processing and conditioning circuits
Summarize
Medium and low voltage MOSFETs, diodes and transistors are all indispensable basic components in modern electronic circuits, each with unique characteristics and applications. MOSFET is mainly used for fast switching and high-efficiency applications; diodes are mainly used for one-way conduction and rectification of current; transistors are used for signal amplification and control. In circuit design, proper selection and matching of these components is critical to achieving reliable functionality.
