News & Events

Schottky diode is a special type of diode with stronger conductivity than ordinary PN junction diodes. Its working principle utilizes the rectification effect at the metal-semiconductor interface. Compared to ordinary PN junction diodes, Schottky diodes have lower forward voltage drop and faster switching speed, with better high-frequency performance and reliability. Schottky diodes are commonly used in high-frequency circuits, such as RF power amplifiers, frequency synthesizers, frequency discriminators, mixers, etc. They can also be used for reverse protection and reverse voltage limiting in power circuits. Additionally, because the conduction characteristics of Schottky diodes are strongly related to temperature, they can also be used in application scenarios such as temperature measurement and environmental monitoring.

Common thermistor models include the following: 1. NTC Thermistor (Negative Temperature Coefficient Thermistor): As temperature increases, resistance value gradually decreases. Common parameters include temperature coefficient, thermal sensitivity, rated power, rated voltage, operating temperature range, etc. 2. PTC Thermistor (Positive Temperature Coefficient Thermistor): As temperature increases, resistance value gradually increases. Common parameters include temperature coefficient, thermal sensitivity, rated power, rated voltage, operating temperature range, etc. 3. MF Thermistor (Metal Film Thermistor): Thermistor made of metal film, with good anti-interference performance. Common parameters include temperature coefficient, accuracy level, rated power, rated voltage, operating temperature range, etc. 4. B Type Thermistor (Bead Thermistor): Thermistor made of ceramic or glass beads, commonly used for measuring ambient temperature and power supply temperature, etc. Common parameters include temperature coefficient, accuracy level, rated power, rated voltage, operating temperature range, etc. 5. NTC Thermistor with Connector: Common connectors include ferroelectric connectors, glass connectors, epoxy resin connectors, etc. Common parameters include temperature coefficient, thermal sensitivity, rated power, rated voltage, operating temperature range, etc. For the above various thermistors, common parameters include temperature coefficient, thermal sensitivity, rated power, rated voltage, operating temperature range, etc. Specific parameter values may vary according to different resistor models and manufacturers and need to refer to specific resistor model specification tables.

A semiconductor material composed of zinc oxide (ZnO) and various metal oxides mixed together. Its working principle is based on its semiconductor characteristics. Due to physical phenomena such as impurity ions, defects, and lattice distortion existing in the material, the number of free electrons in the material changes, causing its resistance value to change under external force.
Specifically, when external force acts on a ZnO varistor, lattice distortion in its structure causes changes in local charge density, leading to an increase or decrease in the number of free electrons in the material, thereby affecting current flow and resistance magnitude, ultimately manifesting as the characteristic of resistance decreasing with increased external force.
ZnO varistors have characteristics such as high sensitivity, fast response speed, and good stability, thus they are widely used in voltage protection, overcurrent protection, temperature compensation, etc., in electronic circuits.
Common application occasions include: 1. Power protection: Used as an overvoltage protection device in circuits to prevent circuit damage due to excessive voltage.
2. Signal protection: Used as an overvoltage protection device for signal lines in circuits, protecting signal processing devices from damage due to excessive voltage.
3. Temperature compensation: Used as a component in temperature compensation circuits in temperature sensors to improve the accuracy and stability of temperature sensors.
4. Internal resistance detection: Measuring the internal resistance of batteries in charging and discharging circuits to ensure normal battery operation.
In summary, ZnO varistors are important resistance devices, playing an irreplaceable role in electronic circuits.

GDT Gas Discharge Tube, also known as gas discharge tube or overvoltage protection tube, is a passive electronic component used to protect circuits from overvoltage and surge voltage effects. It can achieve suppression of high-voltage interference and current puncture through gas discharge. The following are the working principle and application occasions of GDT gas discharge tubes: 1. Working Principle
GDT gas discharge tubes utilize the characteristics of gas discharge to achieve overvoltage protection for circuits. When overvoltage or overcurrent exists in the circuit, the GDT gas discharge tube forms a low impedance path, reducing the voltage to a safe level. During the gas discharge process, the resistance of the GDT rapidly decreases, a spark appears, followed by gas discharge or even arc light. Only after the overvoltage disappears will the GDT return to a high impedance state. 2. Application Occasions
GDT gas discharge tubes are widely used in overvoltage protection for various electronic devices, including telecommunications, communications, power, computers, industrial control, and other fields. Specific application occasions are as follows: (1) Power and communication line protection: GDT gas discharge tubes are applied in power and communication systems to protect various lines, avoiding damage to lines and equipment caused by high voltage surges. (2) High voltage power supply protection: GDT gas discharge tubes protect circuits in high voltage power supplies from overvoltage, surge, and other transient interference. (3) Industrial control protection: GDT gas discharge tubes are used to protect various industrial control equipment, such as PLC, DCS, etc., avoiding damage caused by line interference. (4) Fire alarm system protection: GDT gas discharge tubes are used in fire alarm systems to protect the system from static interference and lightning strikes. (5) LED light protection: GDT gas discharge tubes are used in LED lights to protect LEDs from overvoltage and surge voltage effects, thereby extending their lifespan. In summary, GDT gas discharge tubes are important components for protecting circuits, protecting various lines from overvoltage and surge voltage effects, improving system stability and reliability.

PPTC self-recovery fuse working principle and application precautions?         The working principle of PPTC self-recovery fuse is based on the positive temperature coefficient property of the material. Under normal working temperature, the fuse material is in a low resistance state; once the current exceeds the rated value, the internal temperature of the fuse increases, causing the material to enter a high resistance state, limiting current flow, preventing equipment damage or fire caused by overcurrent. However, once the current drops to a safe range, the internal temperature of the fuse decreases, the material returns to a low resistance state, restoring normal power state. PPTC self-recovery fuse application precautions are as follows: 1. Fully understand the working conditions of the protected circuit and select the appropriate fuse rated voltage and current values. 2. Avoid mechanical or other physical factors causing damage to the fuse, leading to failure or inability to self-recover. 3. During installation, avoid the fuse being in high-temperature environments or subjected to excessive vibration to prevent premature fuse failure or interference with self-recovery. 4. For fuses that need replacement, must select fuses with the same specifications and performance for replacement. 5. For infrequently used circuit equipment, regularly check the status and function of the fuse to ensure it can work normally when needed.

The TSS (Transient Suppressing Semiconductor) diode, also known as the TVS diode, is a passive electronic component used to protect electronic devices. It can limit the amplitude and slope of transient voltage spikes, thereby protecting other components in the circuit from voltage transients. The following is the working principle and application of the TSS diode:

The ESD (Electrostatic Discharge) diode is a passive electronic component used to protect electronic devices. It is also referred to as an ESD electrostatic protector. It can effectively limit the damage caused by electrostatic discharge (ESD) to circuits, preventing damage, malfunction, or failure caused by static electricity. The following provides a detailed explanation of the product characteristics and applications of the ESD diode:

Electromagnetic compatibility technology

What do EMS and EMI in EMC (Electromagnetic Compatibility) technology refer to respectively?