FL Vehicle AEC Q200 Thermistors – Sensing the Temperature

The FL temperature sensor’s miniature NTC is packaged inside a flexible PCB, 3mm wide and 0.5mm in thickness. It is designed to meet the volume, cost and delivery expectations of Original Equipment Manufacturers.

FL Low Profile Series
The flexible PCB design is suitable for electrical connection by soldering or edge connection. Using an ultra low mass NTC thermistor and FFC package enables fast response. The thermal time constant, cooling in still air, is 7.6 seconds. The FL sensor has high lifetime reliability and stability and is suitable for temperature measurement in rechargeable battery backs. The sensing-end of the package is protected with a conformal environmental coating.

The FL sensor is suitable for all low profile thermistor applications and is an ideal solution for measuring Electric Vehicle and Heavy Electric Vehicle battery pack cell surface temperature. It operates over -40ºC to 125ºC at zero dissipation and 0ºC to 55ºC at maximum dissipation (130mW), with a dissipation constant of 1.9mW/ºC approx. Standard device resistance at 25ºC is 10,000Ω ±3%, with a B-value (25/85ºC) of 3936. Other nominal resistances, reference temperatures and B-values are available upon request, as are resistance-versus-temperature curves. The flexible PCB substrate is polyimide. Insulation resistance is 1,000 VDC at 25ºC.