Guide
Pulse Oximeter LED Wavelengths: Choosing the Infrared Channel
How the two channels work
Oxygenated and deoxygenated blood absorb red and infrared light differently. A sensor measures the ratio between the two channels over each pulse to estimate oxygen saturation.
Tight wavelength and output consistency matter because the ratio depends on both channels. Contact sales for reliability summaries and lot-consistency data during design review.
MANULED components are not medical devices; final compliance depends on your system design.
FAQs
What infrared wavelength do pulse oximeters use?+
Designs commonly use an infrared channel in roughly the 880 to 940 nm range paired with a red channel. Exact choice depends on detector response and optical stack.
Does MANULED make red LEDs for oximeters?+
No. MANULED supplies AlGaAs infrared bare die (850 to 950 nm). The red channel comes from another source.