In summary, Ametherm NTC Thermistors can be used for a wide variety of tasks and applications. Among other things, NTC thermistors can be used to detect overheating in electronic equipment, to protect circuits from drawing too much electrical current, and to compensate for temperatures in mobile communications equipment. NTC Thermistors are radial leaded discs or assembled into probes designed for durable performance. NTC Thermistors are non-linear resistors, which alter the resistance characteristics with temperature. The resistance of an NTC thermistor will decrease as the temperature increases. The manner in which the resistance of a thermistor decreases is related to a constant known in the thermistor industry as beta, or b. Beta is measured in °K. Part of choosing the right thermistor is determining which use best suits the needs.