TDK-EPC has extended its range of EPCOS ICL (inrush current limiters). The P11 series B57211P* covers a resistance range from 4 to 25Ω for currents from 2.5 to 5A in the temperature range between 0 and 25°C. The P13 series B57213P* has a resistance range from 3 to 5Ω for currents of 6 or 7A. They are available with disk diameters between 8.5 and 26mm with coating.
The ICLs are temperature-dependent resistors and are used in applications such as the input circuits of power supplies. They limit the high currents that occur at the moment of switch-on when charging the DC link circuit capacitors and thus protect diodes or rectifier bridges from destruction. Other applications are motors with slow-starting loads, such as pumps. In this case, ICLs prevent the high inrush currents from triggering line breakers. They also consume less power in continuous operation, says the company.
