Micronas Hall-Effect Sensors for Industrial Applications (Part 2)

Aug 16, 2016

Micronas HAL102TQ-I

Hall Switch Family Designed for White Goods and Industrial Applications
Package: SOT89 SMD
Ordering Code: HAL 102TQ-I
Interface: 3-Wire
Switching Behavior: Latching, High Sensitivity
Temp. Range: -20°C to +125°C
Switching Points [mT] at 25°C: BON 2.6 - BOFF -2.6
Micronas offers the world’s broadest range of Hall-effect sensors, which are increasingly being utilized in a variety of industrial applications, including factory and process automation; building, home, and office automation; medical applications; mobility and robotics controllers; agriculture and heavy machinery; garden and power tools; and household items such as washing machines, tumble dryers, induction cookers, and heating and cooling (HVAC) systems. 
The HAL 102 Hall switch is designed for home appliances and industrial applications. The sensors are produced in CMOS technology and include a temperature-compensated Hall plate with active offset compensation, a comparator, and an open-drain output transistor. The active offset compensation leads to magnetic characteristics which are robust against mechanical stress effects. In addition, the magnetic characteristics are constant in the full supply voltage and temperature range. The comparator compares the actual magnetic flux through the Hall plate (Hall voltage) with the fixed reference values (switching points). Based on the reading, the output transistor is switched on or off.       
The HAL 102’s high temperature stability and constant switching points over a wide supply voltage and temperature range make it optimal for various industrial applications.

Major Applications

The HAL 1xy is the optimal system solution for application fields, such as:
  • Industrial applications
    • Endposition detection
    • RPM measurement of motors
    • Brushless DC motors
    • RPM measurements in flow meters
    • Replacement of micro switches
  • White goods
    • Selector switches
    • Door lock detection
    • RPM detection
  • Power tools
    • Speed control
    • Direction switch
  • Home automation
    • Garage openers
    • Door openers
Block Diagram – System Architecture


  • Temperature ranges:
    • C (Commercial, TJ = 0 °C to +85 °C)
    • I (Industrial, TJ = 20 °C to +125 °C)
  • Operates from 3.8 V to 24 V supply voltage
  • Operates with static magnetic fields and dynamic magnetic fields up to 10 kHz
  • Overvoltage protection at all pins
  • Reverse-voltage protection at VDD pin
  • Magnetic characteristics are robust against mechanical stress effects
  • Short-circuit protected open-drain output by thermal shut down
  • Constant switching points over a wide supply voltage and temperature range
  • The decrease of magnetic flux density caused by rising temperature in the sensor system is compensated by a built-in negative temperature coefficient of the magnetic characteristics
  • High temperature stability for home appliances and industrial applications
  • High ESD rating


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