EPCOS / TDK HP100 NTC Thermistors are a series of heat pump sensors for measuring the refrigerant temperature indirectly via the pipes' surface temperature. The NTC-based sensors are specifically designed to meet automotive requirements. Standard for pipe diameters of 12.8mm, this clip-on design can operate in harsh environments from -40°C to +150°C and is water immersion resistant for up to 500 hours. The response time is less than 7s. The AEC-Q200 qualified sensors offer a high dielectric strength of 1250V AC for 10s, an important criterion for EV use. Low-temperature tolerance of ±0.3K at a nominal temperature of 85°C ensures high control accuracy.