PTC Thermistors are passive components made from temperature-sensitive materials whose resistance increases as temperature rises. They provide a self-regulating electrical behavior based on a positive temperature coefficient (PTC), where heating—whether from ambient conditions or internal current flow—causes a pronounced rise in resistance.
Within the broader thermistor family, PTC thermistors are commonly categorized by their characteristic resistance change behavior, including devices with a relatively gradual increase and those designed to exhibit a more abrupt transition at a defined temperature region.
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