Product Category


B102T Type Current Sensor


B102T series current sensor is a closed loop device based on the measuring principle of the hall effect and null balance method, with a galvanic isolation between primary and secondary circuit. It provides accurate electronic measurement of DC, AC or pulsed currents.

Directions for use:

  • When the current will be measured goes through a sensor, the current will be measured at the output end. (Note: The false wiring may result in the damage of the sensor)
  • Custom design in the different rated input current and the output current are available.


  • AC variable speed drives
  • Static converters for DC motor drives
  • Battery supplied applications.
  • Uninterruptible Power Supplies (UPS).
  • Switched Mode Power Supplies (SMPS).
  • Power supplies for welding applications.
Type B102T-20A B102T-25A Unit
Rated current(Ipn) 20 25 A
Measure range(Ip) ±20 ±25 A
Turns ratio(Np/Ns) 1:1000 1:625 T
Internal resister 100±0.1% 50±0.1% Ω
Rated output @Ip=±Ipn              ±2±0.5% V
Supply voltage +5V V
Power Consumption ≤20+ IpX(Np/Ns) mA
Zero voltage @Ip=0                  +2.5±0.5% V
Zero voltage drift @ -40~+85℃           ≤±0.5 mV /℃
Linearity @Ip=0-±Ipn            ≤0.1 %FS
Total precision ≤±0.7 %
di/dt accurately followed >50 A /μS
Response time @100A/μ S,10%-90%      ≤1 μS
Galvanic isolation @ 50HZ,AC,1min            2.5 KV
Bandwidth @ -1db                    DC~200 KHZ
Mechanical dimension(for reference only) Note
B102T Type Current Sensor-heyi 1. All dimensions are in mm.
2. General tolerance ±1mm.
3. Elucidation: 1:+5V 2:OV 3:V0UT
General date Value Unit
Operating temperature(TA) -40 to +85
Storage temperature(TS) -40 to +125
Mass(approx) (M) 10 g
Pulse current signal response characteristic Effects of impulse noise
B102T Type Current Sensor-heyi ( Input signal )

( Output signal )

B102T Type Current Sensor-heyi ( Output voltage )

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