Product Type: Hall Effect

SD101201 Sensors

Has two Hall Effect sensors; one detects speed and the other detects direction of movement of gear teeth. The outputs are open collector transistors. The Speed output goes high (on) when sensing the leading edge of a tooth and low (off) on the trailing edge of the tooth when run against a standard target. The direction of movement is latched on the leading edge of the speed sensor; the Direction output goes high for clockwise rotation and low for counterclockwise rotation. The state of the Direction output always leads the rising edge of the speed output


  • Separate digital outputs for speed and direction
  • From near zero speed up to 15 kHz sensing capability
  • Plastic flange-mount sensor rated to 125 ⁰C
  • RoHS compliant
  • IP67
  • Typical air gap of 1.5 mm (0.06”)*

Typical Applications

  • Wheel speed and direction
  • Hoist speed and direction
  • Transmission speed and direction+
  • Industrial feedback and control


Sensor VN1015

Employs a Hall Effect digital vane sensor and a permanent magnet in two small towers, separated by a 3.4 mm (0.135”) air gap. The output switches when a ferrous target passes between the towers. Typical targets are linear or rotary vanes using a square saw tooth or an open slot in a solid disk or band


  • Mechanically interchangeable with typical slotted optical switches
  • Robust, high speed sensing in dirty/dusty environments
  • No mechanical contacts to wear out
  • Open collector (sinking or NPN) output can be used with bipolar or CMOS logic circuits with suitable pull-up resistor
  • RoHS compliant


  • Door/gate position control
  • Exercise equipment
  • Printers


Hall Effect Sensors

Take advantage of solid-state magnetic sensing technology with Littelfuse Hall Effect sensors!  Our selection of Hall Effect products includes digital, analog, and rotary/angle sensors suitable for a wide variety of applications, including speed and direction sensing.  Options for customization are available.

Optek / TT Electronics

We design and manufacture innovative optoelectronic solutions for sensing and illumination applications. Our capabilities also include the design and manufacture of standard and application-specific lighting components and assemblies for applications in signage, entertainment, exterior and interior lighting, automotive and high reliability applications.

Other TT Electronics brands include:  BI Technologies, IRC, and Roxspur

ZF Electronics

ZF is a global leader in driveline and chassis technology and on May 20, 2015 ZF acquired TRW Automotive.  The company is now represented in 230 offices in 40 countries.  In 2014 both companies operated independently.  Collectively, the group achieved sales exceeding €30 billion euros with approximately 134,000 employees.  The Industrial Solutions (IS) product line in the Electronic Systems business unit (formerly CHERRY) develops and manufactures electromechanical components, specifically snap switches, panel-mount switches, rocker and sealed rocker switches, a full range of sensor products as well as Energy Harvesting wireless products.  Target customers for the Industrial Solutions product line include (but are not limited to) home appliance, HVAC, medical equipment and non-automotive equipment such as agricultural and commercial equipment and power sports vehicle (including marine and RV) OEM’s and distributors.


Taiwan Semiconductor is a leading supplier of discrete power semiconductor products. TSC’s product portfolio includes power MOSFETs, power rectifiers, TVS/ESD protection, linear and switching voltage regulators, Hall effect sensors, and power control ICs for lighting applications. Taiwan Semiconductor’s wholly owned production facilities in China and Taiwan are fully certified to current automotive and environmental standards including TS16949, ISO9001, and ISO14001.


With more than 50,000 products ranging from snap action, limit, toggle and pressure switches to position, speed and airflow sensors, Honeywell has a product to meet any industry’s requirements and any company’s needs.

But an impressive product line is only one part. We bring to bear engineering expertise and value-added capabilities no other company offers. While our switch and sensor solutions meet a wide array of basic and complex applications, our custom-engineered solutions offer enhanced precision, repeatability and ruggedness for each industry of our expertise.

Honeywell Brands Include:   Microswitch  –  Clarostat  –  Sensotech  –  Hobbs  –  Fenwall  –  Elmwood  –  Sensysm


Littelfuse products are vital components in applications that use electrical energy, from consumer electronics to vehicles and industrial facilities. Littelfuse offers the industry’s broadest and deepest portfolio of circuit protection products, with growing platforms in power control and sensing. We are expanding into adjacent markets as part of our corporate strategy of accelerated organic growth and strategic acquisitions. These markets include power semiconductors, heavy-duty switches, magnetic, optical, electromechanical, and temperature sensors; and products that provide safe control and distribution of electrical power.

Littelfuse Brands Include:     Hamlin  –  Cole Hersee  –  Symcom/SSAC  –  Teccor  –  U.S. Sensor – IXYS