As vehicle electronics run hotter than ever, new thermistors built for 175°C promise better heat sensing and control inside critical automotive systems.
TDK Corporation has introduced a new NTC thermistor series that can operate at temperatures up to +175 °C, addressing rising heat levels inside modern automotive modules. The new NTCSP series is designed for conductive-glue mounting and supports temperature sensing and compensation across a wide range, from –55 °C to +175 °C.
Automotive systems are using more powerful power semiconductors, which increases heat inside control units. As a result, nearby components must handle higher temperatures. Earlier NTC thermistors from TDK were rated up to +150 °C. The new series extends this limit by 25 degrees, allowing use in hotter environments without changing the sensing function.
The devices meet AEC-Q200 requirements, making them suitable for automotive applications. Typical use cases include temperature monitoring and compensation in systems such as ABS units, transmissions, and engine control modules. These systems often face both very low and very high temperatures, so stable operation across the full range is necessary.
A key change in the NTCSP series is the use of AgPd (silver-palladium) terminals. This structure supports conductive-glue mounting instead of conventional soldering. At higher temperatures, solder joints can face reliability issues. The AgPd terminal design helps maintain stable electrical and mechanical performance at +175 °C.
The components are offered in a compact 1.6 × 0.8 mm package and are available in 10 kΩ and 100 kΩ resistance options. This allows designers to select values based on system requirements while keeping board space small.
The company plans to expand the lineup further, adding more chip sizes, resistance values, and operating temperature options to meet growing thermal demands in automotive and other high-temperature applications.
