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Current Sensor WCS37A50


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Hall Effect Base Linear Current Sensor WCS37A50 Introduction :

The Winson WCS37A50 provides economical and precise solution for both DC and AC current sensing in industrial, commercial and communications systems. The unique package allows for easy implementation by the customer. Typical applications include motor control, load detection and management, over-current fault detection and any intelligent power management system etc…

The WCS37A50consists of a precise, low-temperature drift linear hall sensor IC with temperature compensation circuit and a current path with 1.5Ω typical internal conductor resistance. This extremely low resistance can effectively reduce power loss, operating temperature and increase the reliability greatly. Applied current flowing through this conduction path generates a magnetic field which is sensed by the integrated Hall IC and converted into a proportional voltage.

The terminals of the conductive path are electrically isolated from the sensor leads. This allow the WCS37A50 current sensor to be used in applications requiring electrical isolation without the use of opto-isolators or other costly isolation techniques and make system more competitive in cost.


  • Low noise analog signal path.
  • 1.5Ω internal conductor resistance.
  • Output voltage proportional to AC and DC current.
  • Min. sensing current 0~0.5A at 5V voltage supply.
  • High Sensitivity 3.5mV/mA
  • Wide operating voltage range 3.0~12 V.
  • Low operating current 3mA.
  • Nearly zero magnetic hysteresis.
  • Ratiometric output from supply voltage.
  • 4K Hz bandwidth.
  • Isolation voltage 1000V.
  • SKU: sensor WCS37A50 Categories: ,
    Characteristic Symbol Test Conditions Min Typ Max Units
    Supply Voltage Vdd 3.0 12 V
    Supply Current Isupply IP =0 A 3.5 6.0 mA
    Zero Current Vout V0G IP =0 A 2.375 2.5 2.625 V
    Primary Conductor Resistance Rprimary IP =0.12 A 1.5 mm2
    Sensitivity ΔVout IP= 0.2 A 3.0 3.5 4.0 mV/A
    Bandwidth BW 10 kHz
    Measurable Current Range MCR Vdd=5V (DC Mode) ±0.5 A
    Vdd=5V(AC RMS) 0.35
    Temperature Drift ΔVout Ip =0 A ±0.5 mV/℃
    Output Noise VNp-p Ip =0 A 7.5 mV
    VNp-p(0.01uF) I Ip =0 A, C = 0.01uF 1



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