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Infrared emitter in the 0805 footprint (2.0 × 1.25mm). Emits at 940nm — the standard wavelength for silicon photodetector-optimized sensing and IR remote control applications. The 940nm wavelength sits at the peak response of standard silicon photodiodes while minimizing sensitivity to ambient visible light and incandescent interference, improving signal-to-noise ratio in real-world sensing environments.
Rated to 100mA continuous drive current — significantly higher than visible indicator LEDs — to support the higher radiant flux required by sensing applications. Pulse drive to 500mA is possible at low duty cycles for distance ranging and modulated sensing. Specified by radiant intensity (mW/sr) rather than luminous intensity (mcd). Operating temperature −40°C to +85°C.
Detailed electrical and optical characteristics
Radiant intensity consistency is critical in sensing applications: IR emitter batch variation changes the switching threshold of the paired detector circuit, potentially requiring firmware or hardware recalibration when replacement components arrive from a different factory. CMH's single-factory production maintains radiant intensity and emission angle within specification across orders, eliminating the detector recalibration risk that affects multi-source procurement.
940nm infrared emitter for proximity sensing and remote control applications.
Applications where this product is commonly specified
High-reliability status indicators and alarm arrays on factory floor equipment.
High-density status indicators for network switches, routers, and server blades.
Critical status and warning indicators on patient monitors and diagnostic hardware.