OH3141E Unipolar Hall IC

Part No: OH3141E

Function: Unipolar

Operating voltage: 4.5-24V

Output Current: 50mA

Operating Point (Bop): <12mT

Release Point(Brp): >3mT

Operating Temp: -40~ 150℃

Package: TO92S


OH3141E is a unipolar Hall-Effect IC suitable for contactless switching applications. The device includes an on-chip Hall voltage generator for magnetic sensing, an amplifier that amplifies the Hall voltage, a schmitt trigger to provide switching hysteresis for noise rejection, and an open-collector output.


  • High reliability
  • Good temperature performance
  • Anti-environmental stress
  • High sensitivity


  • Speed measurement
  • Home appliances
  • Position detection
  • Flow measurement

Absolute Maximum Ratings (TA=25℃)

Supply Voltage VCC··············4.5-28V    Operating Temperature Range TA ········-40~125℃

Output Current  IO···················50mA    Storage Temperature RangeTS ················-65~150℃

Electrical Characteristics (Ta= 25°C)

Parameter Symbol Conditions Value Unit
Min Typ Max
Supply Voltage VCC   4.5 24 V
Output Saturation Voltage VOL Vcc=4.5V, Iout=20mA,B≥BOP 200 400 mV
Output Leakage Current IOH Vout=24V,B≤BRP 1.0 10 μA
Supply Current ICC VCC=Vccmax OC output 5 mA
Output Rise Time tr Vcc=12V, RL=820Ω, CL=20pF 0.4 2.0 μS
Output Falling Time tf 0.4 2.0 μS


Magnetic Characteristics (Ta= 25°C) (1mT = 10 Gauss)

Parameter symbol Value Unit
Min Typ Max
Operate Point BOP 12 mT
Release Point BRP 3 mT
Hysteresis BH 6 mT


OH3141E Unipolar hall IC