Managing sudden and temporary current spikes with circuit components is a crucial aspect of circuit design, particularly when dealing with high-power electronics. Inrush occurs when there is a sudden surge in current that occurs when a power is applied to the device or when a storage element is charged starts charging up.

The temporary current leads to overheating to parts of the circuit, overheating of components in the circuit, and electrical grid failures. To address inrush energy surges with circuitry, designers employ various approaches that can be broadly categorized into two main approaches: passive and active solutions.

Passive solutions involve circuit devices to limit or inrush current. One approach is the use of voltage surge limiting resistors, which are a small loss in energy, thereby limiting the peak current. However, ICL resistors are more used in applications where a significant reduction in inrush energy surges is not required.

A more efficient way to handle the use of heat-sensitive resistors that exhibit a high resistance at low low resistance at high temperature settings, and a low. When a device is turned on for the first time, the high peak current results in the reduction of resistance, reducing the impact of current. Once the device has started normally, the thermistor cools down, and increases to normal.