Photo Transistor


Availability: In Stock


SKU: SEN-045 Manufacturer: Fairchild Semiconductor Mfg Part Number: QRD1114 Categories: , , Tags: , , ,


A phototransistor is effectively a transistor that responds to light. This specific phototransistor has a built in infrared LED and works really well as a reflectance sensor. It is ideal for detecting the difference between black and white surfaces or general object detection up to 10mm.

To use this phototransistor a simple current limiting resistor rated at 330 ohms is required on the infrared LED side with a 10K ohm resistor as a pull up on the transistor side.



  • Sensing Distance: 1.27mm / 0.05″
  • Voltage (Max): 30V
  • Sensing Method: Reflective
  • Current (Max): 50mA




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  Difficulty Level

Soldering Skill: N/A
Prototyping Skill: Beginner
Programming Skill: N/A

  Product Certifications

  Product Attributes

Weight: 1 g

  Warranty Policy

This product has a 30 Day Warranty from the date of delivery. The item must not be modified, abused, incorrectly hooked up, or used for purposes outside the original scope of design.

  Return Policy

This product is returnable Within 14 Days of delivery for a store credit. Item must be unopened, unused, and in re-saleable condition.

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