List of Model Selection and Online Purchase Address for Anti Surge Chip Resistors: Click on the image to enter
Surge resistance refers to the ability of a resistor to effectively resist surge currents in a circuit. Surge current refers to the sudden peak current in a circuit, usually caused by sudden changes in power switches, inductors, capacitors, inductive coupling, or other external factors. The peak value of surge current may cause damage to the circuit and equipment, so the function of surge resistance is to provide a controllable resistance value when surge current occurs, limit the current within a safe range, and protect the normal operation of the circuit and equipment.
Metal oxide resistor (MOV) is usually used as the main material for surge resistance. MOV is a nonlinear resistance device with a resistance value that is very high under normal operating voltage and can be ignored. However, when the rated voltage is exceeded, the resistance value rapidly decreases, allowing it to absorb overvoltage and surge current. When surge current occurs in the circuit, the MOV quickly transitions to a low resistance state, directing the current to ground or other grounding points, thereby protecting other electronic components from damage.
The surge resistance of a surge resistance is measured by its rated voltage and rated energy. Rated voltage refers to the maximum voltage that the surge resistance can withstand under normal working conditions. Rated energy refers to the maximum energy that the surge resistance can absorb under normal working conditions. In general, the higher the rated voltage and rated energy of the surge resistance, the stronger its surge resistance ability.
Surge resistance plays a very important role in circuit design and application. Firstly, it can protect circuits and equipment from damage caused by surge currents, extending their service life. Secondly, it can improve the stability and reliability of the circuit and reduce the occurrence of faults. In addition, surge resistance can also reduce the failure rate of other components in the circuit and improve the performance of the entire system.
When selecting surge resistance, the following factors need to be considered. Firstly, the rated voltage and rated energy require the selection of appropriate surge resistance based on the working voltage of the circuit and the peak expected surge current. Secondly, the size and packaging form need to be selected according to the design and installation requirements of the circuit board. In addition, it is also necessary to consider the temperature coefficient and power coefficient of the surge resistance to ensure its reliability and stability in different working environments.
In short, surge resistance is a resistance device that can effectively resist surge currents. It plays a role in protecting other electronic components from surge current damage in the circuit, improving the stability and reliability of the circuit. When selecting surge resistance, it is necessary to consider factors such as its rated voltage, rated energy, size, packaging form, temperature coefficient, and power coefficient. By selecting and applying surge resistance reasonably, circuits and equipment can be effectively protected and system performance can be improved.
