Optical Switches, Reflective, Phototransistor Output PHOTO TRANS

QRD1114 – Reflective Optical Switch, Phototransistor Output – onsemi

The QRD1114 from onsemi is a high-reliability reflective optical switch designed for precise object detection in compact spaces. Featuring phototransistor output and a 1.27mm sensing distance, this component delivers fast response times and robust performance in industrial environments. PCX ensures genuine onsemi inventory with same-day shipping and dedicated technical support.

Key Features

• Output Type: Phototransistor
• Sensing Method: Reflective (0.050″ / 1.27mm optimal distance)
• Breakdown Voltage: 30V max collector-emitter
• Response Time: 10µs rise / 50µs fall
• Operating Temperature: -40°C to +85°C
• Forward Current: 50mA max

Technical Details

This reflective optical sensor integrates an infrared emitter and phototransistor in a radial 4-lead through-hole package. Its analog output provides proportional response to reflected light intensity, enabling precise position sensing. The device operates across industrial temperature ranges (-40°C to +85°C) with a collector-emitter breakdown voltage of 30V, ensuring stability in demanding applications. The QRD1114 belongs to onsemi’s QRD111 series, known for consistent quality control.

Typical Applications

• Printing and paper feed mechanisms
• Assembly line object counters
• Vending machine position sensors
• Robotic arm proximity detection
• Medical equipment safety interlocks

About onsemi

onsemi (formerly ON Semiconductor) is a Fortune 500 leader in power management and sensing technologies, with over 25 years of innovation in optoelectronics. Their components are renowned for meeting stringent automotive and industrial reliability standards, backed by ISO/TS 16949 certified manufacturing.

The company invests heavily in R&D for harsh-environment applications, with optical sensors specifically engineered for humidity resistance, thermal cycling endurance, and long-term stability. This commitment positions onsemi as a trusted partner for critical embedded systems worldwide.

About Reflective Optical Switches

Reflective optical switches detect objects by measuring infrared light reflected from a target surface. Unlike through-beam sensors requiring separate components, these integrated devices simplify installation while maintaining sub-millimeter precision. Their non-contact operation eliminates mechanical wear, enabling millions of detection cycles.

Phototransistor output variants like the QRD1114 provide analog voltage proportional to reflection intensity, allowing distance measurement and surface discrimination. This functionality makes them ideal for automation, security systems, and consumer electronics where space constraints rule out mechanical switches.

Packaging

Available in Bulk packaging for prototyping and low-volume production. Contact PCX for reel options on compatible high-volume orders.

FAQs

Q: What’s the optimal sensing distance for QRD1114?
A: 1.27mm delivers peak sensitivity, though it detects objects within 0.5-3mm range depending on reflectivity.

Q: Can I use this with Arduino/Raspberry Pi?
A: Yes – pair with a current-limiting resistor (e.g., 220Ω) for the emitter and a pull-up resistor (e.g., 10kΩ) on the phototransistor output.

Q: How does temperature affect performance?
A: onsemi’s industrial-grade design maintains stable operation from -40°C to 85°C with <5% sensitivity drift.

Q: What surfaces work best for reflection?
A: White/matte surfaces provide strongest signals; dark/glossy materials may require calibration.

Q: Is the emitter wavelength visible?
A: No – 940nm infrared ensures no visible light interference.

Q: Can it detect transparent objects?
A: Limited capability – best for opaque materials. Clear plastics/glass may require through-beam sensors.

Datasheet & Support

Download full specifications: PCX-Hosted QRD1114 Datasheet

*Product images are representational; refer to datasheet for exact dimensions.

Order QRD1114 from PCX today for guaranteed authentic onsemi components and next-business-day delivery!