55250 Series - Rotary Absolute Position Sensor

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Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. "Littelfuse" includes Littelfuse, Inc., and all of its affiliate entities.

The Littelfuse 55250 series of rotary absolute position sensors provide angular measurement between 0 and 105 degrees with the option of a full 360-degree movement. The internal design of the sensor uses non-contact magnetic Hall effect technology as opposed to more common wiper-based resistive products. This unit is immune to the performance limitations of the wiper-based products that are associated with mechanical wear or contamination.

The 55250's package design commonly finds applications within all types of vehicle and industrial segments. Designed to operate in the harsh environments of the industrial and commercial vehicle, the sensor has an operating temperature range between -40°C and 125°C. This unit incorporates automotive grade EMI/EMC and reverse polarity protection and mates with a Delphi-type sealed connector.


  • 105° angular sensing range
  • Absolute rotary position sensor
  • Analog output
  • Non-contact measuring
  • Vibration 50g max. @ 50 to 2,000Hz
  • Integral EMC protection
  • Integral connector


  • Long life with no wear of components
  • High speed
  • Unaffected by harsh environments
  • Small, robust package


  • Pedal position sensing, including automotive applications
  • Absolute rotary encoders
  • Shaft position
  • Lever position
  • Float level sensing
  • Non-contact potentiometer

Access specifications, certifications, check availability and order parts below

Catalog #Supply Voltage (V DC)Supply Current (mA)Output TypeOutput HighOutput LowOperating TemperatureStockSamples
55250-004.5 to 5.516Analog Voltage or PWM4.5 V0.5 V-40° to 125°CCheckOrder

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Part # Part Description RoHS Pb-free RoHS (2015/ 863/EU) Certificate REACH (SVHC’s) Declaration Halogen Free REACH (SVHC’s) IPC-Material Declaration
55250-00-00-0 55250-00-00-0 SENS RoHS No 12/03/2013 PbFree No
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