This Product Selection Guide contains information to help select products in the [LED Emitters - Infrared, UV, Visible] category on DigiKey.com
LED Emitters are semiconductor devices that emit light when current flows through it. This category includes Infrared (IR), Ultraviolet (UV), and Visible. Infrared (electromagnetic radiation) is invisible to the human eye with wavelengths from around 700-800 nanometers (nm) to 1 millimeter (mm). IR is commonly used in heat sensors, thermal imaging, and more. Ultraviolet rays are invisible to the human eye, ranging from around 200 nm to 400 nm. UV is commonly used for curing resin, killing bacteria, and more. Visible emitters exist in the wavelength range from around 400 nm to 700-800 nm. This category can be sorted by type, forward current, wavelength, viewing angle, forward voltage, operating temperature, and more.
SelectionCharacteristics
Type: Indicates the spectrum of light produced by the device.
Current - DC Forward (If) (Max): Characterizes device current consumption while operating in an active state.
Radiant Intensity (Ie) Min @ If: Minimum emitted radiant intensity at the indicated forward drive current. Typically specified at a device temperature near 25°C.
Wavelength: Typically, indicates the nominal wavelength of light produced by the device.
Voltage - Forward (Vf) (Typ): Characterizes the voltage drop across a forward-biased diode, measured at the test current indicated.
Viewing Angle: Indicates the angle of light emitted from the LED(s).
Orientation: Indicates the direction of the light emitting surface relative to its mounting surface.
Operating Temperature: Recommended operating temperature, typically given in a range or as a maximum. Exceeding these temperatures may affect performance or damage the device and other system components.
Mounting Type: Indicates how the device is attached.
Package / Case: Indicates the type of protective case used on an electronic component to allow easy handling, installation, and protection. This selection was determined to be the closest industry standard applicable to the supplier device packaging. Typically it is best to check the actual dimensions from the datasheet rather than depend on this terminology when designing your circuit.
ProductExamples
| MFR PART # | QED223A4R0 |
|---|---|
| DIGIKEY PART # | QED223A4R0TR-ND - Tape & Reel (TR) |
| MANUFACTURER | onsemi |
| DESCRIPTION | EMITTER IR 880NM 100MA RADIAL |
| DATASHEET | Click Here |
| MFR PART # | VLMU3100-GS08 |
|---|---|
| DIGIKEY PART # | VLMU3100-GS08TR-ND - Tape & Reel (TR) |
| MANUFACTURER | Vishay Semiconductor Opto Division |
| DESCRIPTION | EMITTER UV 405NM 30MA PLCC |
| DATASHEET | Click Here |
| MFR PART # | VSMB10940 |
|---|---|
| DIGIKEY PART # | VSMB10940TR-ND - Tape & Reel (TR) |
| MANUFACTURER | Vishay Semiconductor Opto Division |
| DESCRIPTION | EMITTER IR 940NM 65MA SMD |
| DATASHEET | Click Here |
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MediaLinks
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Using Infrared Technology for Sensing
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