B57862L and B57871L Series NTC Temperature Sensors

TDK Corporation L862 (B57862L) NTC thermistors with bendable wires and the L871 (B57871L) lead spacing NTC thermistors can be used in a wide range of automotive and industrial applications. Both series are Pb-free and can measure temperatures between -40°C and +155°C with a tolerance of ±1% and ±3%, respectively. At room temperature, their maximum power dissipation is 60 mW. Both series are available with different rated resistances between 1 kΩ and 100 kΩ and different R/T characteristics. After 10,000 h at +70°C, the deviation of the resistance at room temperature R₂₅ is less than 3%.

The sensor element of the L862 that is encapsulated with a black epoxy coating is just 2.6 mm x 6.5 mm (D x H) in size and has insulated leads of silver-plated nickel wire (AWG 30, d 0.25 mm). The total length of the sensor including the wires is 50 mm, with 6 mm stripped. While the dissipation factor δ_th of the sensor is 1.4 mW/K, its thermal cooling time constant T_C is 14 s.

Also, the sensor element of the L871 is encapsulated with a black epoxy coating. It is just 2.8 mm x 6.0 mm (D x H) in size and has Cu-clad steel wires (d 0.4 mm) with a spacing of 2.5 mm. While the dissipation factor δ_th of the sensor is 3 mW/K, its thermal cooling time constant T_C is 9 s.

TDK thermistors are ideal for temperature measurement in a wide variety of automotive and industrial applications, such as battery packs, power banks, energy storage, drones, and more.