Automotive current sensor for battery management systems

HBCT - Automotive current sensor

The HBCT family provides to an engine control unit (ECU) the actual value of current flowing in and out of the battery and the ambient temperature by a NTC thermistor. The current measurement is performed with a full galvanic separation between the primary circuit (high power) and the secondary circuit (electronic circuit).

The HBCT 250-V proposed a battery clamp mounting and the transducer is linked to the ECU with the wiring harness using a waterproof connector.

HBCT current sensors are relying on the hall effect technology. They are designed for automotive applications.

HBCT – Features and benefits

HBCT automotive current sensors

Main characteristics

  • Open Loop transducer using the Hall effect
  • Unipolar +5 V DC power supply
  • Primary current measuring range up to −250 A / +100 A
  • Maximum RMS primary admissible current: defined by battery pole to have T < +150 °C
  • Operating temperature range: −30 °C < T < +90 °C
  • Output voltage: full ratio-metric (in sensitivity and offset)
  • Ferrite material magnetic core allowing high frequency primary current ripple with low self-heating.


  • Excellent accuracy
  • Very good linearity
  • Very low thermal offset drift
  • Very low thermal sensitivity drift
  • High frequency bandwidth
  • Non insertion losses
  • Very fast delay time 

Typical applications

HBCT current sensors are designed for automotive applications, especially for battery management system.


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