NTC Thermistors: Robust Temperature Sensor for E-Mobility

June 23, 2020 Tiera Oliver

TDK Corporation announced the new B58703M1103A temperature sensor, developed for e-mobility applications. The NTC sensor is designed for a temperature range of -40°C to +150°C, where a temporary load of up to 200°C is permitted. At 25°C, the rated resistance is 10 kΩ with a B25/100 value of 3625 K and a tolerance of ±1 percent.

The sensor has been subjected to climatic, chemical, and mechanical testing according to the service life tests of LV 124, and in doing so, has achieved electrical resistance class H3 according to LV 123, which corresponds to 2.5 kV DC. According to the company, this high and long-term stable electrical strength is required to prevent damage, for example, to control devices throughout the service life of the vehicle.

The connecting cables of the new temperature sensor meet the LV 112-4 standard for electrical cables in motor vehicles and are twisted to improve EMC performance. The cable lengths are 655 mm and 1000 mm, as is standard. The sensor includes an M4 mounting bracket made from copper alloy for mounting purposes. This choice of material offers ideal thermal coupling and material compatibility with the copper busbar, which prevents contact corrosion.

The field of application of the new sensor is temperature monitoring of busbars, battery modules, and connector systems in e-mobility.

For more information, visit: www.tdk-electronics.tdk.com/en/ntc

About the Author

Tiera Oliver, edtorial intern for Embedded Computing Design, is responsible for web content edits as well as newsletter updates. She also assists in news content as far as constructing and editing stories. Before interning for ECD, Tiera had recently graduated from Northern Arizona University where she received her B.A. in journalism and political science and worked as a news reporter for the university's student led newspaper, The Lumberjack.

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