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Murata MRD series current sensors

Mixed Media

The MRD series is an integrated coreless current sensor which proportionally outputs analog voltage when the current flows through the primary conductor. It adopts a high-performance TMR sensor to enable high-speed response and high-precision current sensing, and also has a built-in disturbance magnetic field fluctuation suppression function. The product lineup includes bipolar detection model (MRDAB) and unipolar detection model (MRDAC). The MRDAB model and MRDAC model have the same package profile and support 5V and 3V outputs, respectively. 

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Features/Applications

Table
Features Applications
  • Compliant with safety standard of UL62368-1             
    • (clearance, creepage distance ≥ 8mm）
  • Current sensing range 
    • Bipolar detection: ±25Arms and ±40Arms             
    • Unipolar detection: 0A to +25A, 0A to +40A 
  • Total output accuracy                                                               
    • Bipolar detection: 1%F.S.(ambient temperature Ta=-40°C to +105°C, max.)
    • Unipolar detection: 1.5%F.S.(ambient temperature Ta=-40°C to +105°C, max.)
  • Supply voltage                                                                        
    • 3.3V typ. or 5V typ.
  • Primary conductor resistance 0.86mΩ typ. 
  • Fast response 0.5μs typ.
  • Bandwidth 1MHz typ.
  • Band selection (filter) by external capacitor is possible
  • Built-in disturbance magnetic field fluctuation suppression function 
  • Isolation voltage 4.8kV(AC50Hz, 60s)
  • Non-ratiometric output
  • Low current consumption 
  • Solar inverters, power conditioners
  • Server power supply, telecom power supply
  • General-purpose inverter
  • EV charger
  • Other applications which are required isolation with small size and suppressing heat generation
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