Thermo-sensitive devices, where to use
There are several types of such resistors that change resistance with the temperature. As an example, to switch control an equipment to a preset temperature, negative temperature coefficient (NTC) thermistor NT73, is used because it has a merit in sensitivity rather than linearity.
(Application example) Thermistor as a sensor to switch(on/off) control IC
Another example to use such a device is a temperature compensator. Linear positive temperature coefficient (PTC) resistor LP73 LT73 is conveniently used to linearly control the circuits, devices, etc. The resistor as a sensor and the device to be controlled should be thermally tightly coupled.
(Application example)LP73 LT73 is used as the bias resistor and output load resistor for temperature compensation of high frequency amplifiers. (We recommend LT73V for automotive applications.)