B57213P0109M301

Inrush current limiters (ICL) are devices used in electrical and electronic circuits to reduce the current surge that occurs when the power is on. The B57213P0109M301 is a variable-temperature-compensated inrush current limiter designed to limit the inrush current in applications such as power supplies and motor drives. This device is capable of limiting large inrush current to protect downstream components from the surge of power.

Application Field

The most common application for the B57213P0109M301 device is the protection of power supplies. In power supplies, an inrush current limiter is used to protect downstream components from damage due to large inrush currents. Additionally, the device can be used to protect motor drives from damage due to excessive inrush currents. The device can also be used in other applications such as LED systems and lighting applications, telecommunication systems, industrial equipment, and other power equipment.

Working Principle

The B57213P0109M301 device works by controlling the inrush current through the use of a temperature-compensated element. This element is composed of an NTC thermistor, which is a resistor that changes its resistance as the temperature changes. The device works by using the voltage across a threaded resistor to control the resistance of the thermistor. When a surge of current is detected, the thermistor is activated and forces the current to reduce. The device is also designed to reduce the current to a steady-state value once the inrush current is over.

Overall, the B57213P0109M301 device is an excellent solution for protecting delicate electronic components from the damaging effects of inrush currents. It is capable of limiting large inrush current and maintaining a steady-state current once the surge is over. Additionally, the temperature-compensated element ensures improved accuracy and reliability in operation. The device is ideal for applications such as power supplies, motor drives, LED systems, and other power equipment.