Mid-Sized Housed Encoder

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The HEDR-542X series are high performance, cost effective, two-channel optical incremental housed encoders. These encoders emphasize high reliability, high resolution and easy assembly.

The HEDR-542X housed encoders use reflective technology to sense rotary position. This sensor consists of an LED light source and a photodetector IC in a single SO-8 surface mount package. The outputs of the HEDR-542X encoders are two square waves in quadrature. These encoders may be quickly and easily mounted to a motor.


  • Two channel quadrature output
  • Quick and easy assembly
  • Cost-effective
  • Ideal for small motor systems
  • -10 degrees C to 85 degrees C operating temperature
  • Right Angle Connector Available
  • Hub available in either a set screw configuration or a press-fit/adhesive mount configuration
  • External Mounting Ears Available

Lifecycle Status


Substance Compliance

  • RoHS6
    Fully Compliant
Specification Value
Lifecycle Active
Distrib. Inventory Yes
RoHS6 Compliant Y
Motion Type Rotary
Optical Method Reflective
Output Type Digital
Product Size (mm) N/A
Number of Channels 2
Shaft Diameter 5
Shaft Diameter (Unit of Measure) mm
Operating Temperature Range -20°C to +85°C
Operating Voltage (V) 5.0V
Resolution 200 CPR
Shaft Diameter 5 mm
Data Sheet1 i
Product Change Notice (PCN)3 i
Reliability Data Sheet1 i