Infrared LEDs and Phototransistors
Infrared LEDs and Phototransistors
Overview of Infrared LEDs and Phototransistors
Dialight’s IR LEDs and phototransistors are engineered for high-performance optical sensing, signaling, and non-contact detection. Our IR LEDs emit infrared light in the 850–940 nm wavelength range and are available in both surface-mount (SMD) and through-hole configurations. Optimized for use with matching phototransistors, these components deliver reliable performance in compact and demanding applications.
Features, Benefits and Applications of Infrared LEDs and Phototransistors
FEATURES
• Infrared emission wavelengths: 850 nm and 940 nm
• Available in SMD (1.9mm gullwing) and 5mm through-hole (THT) versions
• High radiant intensity with water-clear lenses
• Phototransistors matched for wavelength sensitivity
• RoHS compliant and lead-free
• 3D CAD models and C-drawings available for design support
BENEFITS
• Enables reliable non-contact sensing and remote signaling
• Consistent performance in demanding environments
• Simplifies integration into compact circuit board layouts
• Low power consumption for energy-efficient designs
• Ideal for high-reliability applications in industrial and consumer markets
APPLICATIONS
• Remote controls and IR data transmission
• Industrial automation and safety sensors
• Proximity and object detection sensors
• Optical encoders and positioning systems
• Consumer electronics and smart appliances
• Medical instrumentation and lab diagnostics
• Security systems and motion detectors
Discover Dialight’s infrared LEDs and phototransistors built for reliable optical sensing, non contact detection, and infrared signaling. The catalog includes 850 nm and 940 nm components in a wide range of surface mount packages, viewing angles, and lens styles for easy integration into compact PCB designs.
Designed to work together, Dialight IR LEDs and matched phototransistors deliver consistent performance in demanding environments, supporting applications such as proximity sensing, automation, security, and smart devices.
Download the catalog to view detailed specifications, package options, CAD resources, and ordering information.