Overview
The ITR8307/S17/TR8 is a reflective optical sensor combining an infrared emitter and phototransistor in a compact package. This optoelectronic device is designed for non-contact detection applications across various industries. Its reliable performance and simple integration make it popular in automation, robotics, and consumer electronics. Manufactured to consistent quality standards, this sensor offers stable operation in diverse environmental conditions. The component's standardized package allows for easy implementation in PCB designs, making it a versatile solution for engineers developing detection systems.
Structure and Working Principle
The sensor comprises three key elements: an infrared LED emitter, a silicon phototransistor detector, and a molded plastic housing that optically couples these components. When powered, the emitter projects infrared light which reflects off nearby objects back to the phototransistor. The phototransistor's conductivity changes proportionally with the received reflected light intensity, enabling object detection. The housing geometry ensures optimal light path alignment while minimizing interference from ambient light sources. This design provides consistent performance with detection distances typically ranging from a few millimeters to several centimeters.
Key Features
The ITR8307/S17/TR8 offers several technical advantages including high signal-to-noise ratio and fast response time (typically under 10μs). Its spectral sensitivity is optimized for 950nm infrared light, reducing interference from visible spectrum sources. Additional features include ambient light rejection capability and stable performance across a -25°C to +85°C operating temperature range. The sensor's compact SMD package (3.2mm × 2.5mm × 2.1mm) facilitates space-constrained designs while maintaining reliable mechanical stability.
Application Areas
This sensor finds extensive use in paper detection for printers and copiers, vending machine mechanisms, and assembly line automation. Consumer electronics applications include smartphone cover detection, appliance lid position sensing, and toy motion control. Industrial implementations range from conveyor belt object counting to robotic arm position feedback. The component's reliability and cost-effectiveness make it suitable for high-volume production applications where consistent performance is critical.
Maintenance and Precautions
Proper handling involves avoiding mechanical stress to the plastic lens and preventing contamination of the optical surfaces. Storage should be in antistatic packaging with controlled humidity (30-70% RH recommended). Installation requires careful alignment of the sensor to the target surface, typically at a 10-20 degree angle for optimal reflection. Electrical connections should follow manufacturer specifications to prevent damage from voltage spikes or incorrect polarity.
B2B Procurement Guide
When sourcing ITR8307/S17/TR8 sensors, verify manufacturer certifications (ISO 9001 typically required) and request batch testing reports. Lead times vary from 4-12 weeks depending on order volume, with MOQs commonly starting at 1,000 pieces. For custom requirements, some suppliers offer tape-and-reel packaging or pre-calibrated variants. Price breaks occur at 10k, 50k, and 100k unit quantities. Always confirm RoHS compliance documentation for international shipments.
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