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LEDs for spectral range of 2.7 - 4.7 µm
Mid-infrared LEDs is known to be prospective light sources for gas sensors. The characteristic absorption bands of a number of hydrocarbon compounds, natural gases lie in the wavelength range of 2.7 - 4.7 µm. The InAsSb/InAsSbP heterostructures are used for manufacturing LEDs emitting in this spectral range.
| LEDs 2.9-4.7 µm | Wavelength (µm) | FWHM (nm) | Optical Power (mkW) | Forward Voltage (V)* | Switching Times (ns) | I max | Operating Temperature (°С) | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| QCW(200mA)* | Pulse(1A)** | ||||||||||||||
| Series | Model*** | Min | Typ | Max | Min | Max | Min | Max | Min | Max | QCW | Pulse | |||
| LED30 | 2.8 | 2.84 | 2.9 | 300 | 500 | 6 | 40 | 30 | 180 | 0.7 ~ 1.2 | 30-50 | 220 | 2000 | -30...+50 | |
| 3.2 | 3.24 | 3.3 | 400 | 700 | 10 | 35 | 45 | 160 | 0.3 ~ 0.5 | ||||||
| 3.32 | 3.4 | 3.46 | 400 | 600 | 25 | 45 | 115 | 200 | 0.3 ~ 0.5 | ||||||
| 3.32 | 3.4 | 3.46 | 300 | 500 | 45 | 80 | 200 | 360 | 0.3 ~ 0.5 | ||||||
| 3.5 | 3.58 | 3.7 | 400 | 600 | 20 | 40 | 90 | 180 | 0.2 ~ 0.4 | ||||||
| 3.7 | 3.75 | 3.85 | 500 | 700 | 20 | 40 | 90 | 180 | 0.5 ~ 0.8 | ||||||
| 3.85 | 3.92 | 3.95 | 550 | 750 | 15 | 30 | 70 | 135 | 0.5 ~ 0.8 | ||||||
| LED40 | 3.95 | 4.05 | 4.1 | 700 | 750 | 15 | 35 | 70 | 160 | 0.2 ~ 0.4 | |||||
| 4.1 | 4.15 | 4.3 | 700 | 1000 | 8 | 26 | 35 | 120 | 0.2 ~ 0.8 | ||||||
| 4.4 | 4.6 | 4.66 | 800 | 1100 | 4 | 12 | 20 | 55 | 0.3 ~ 0.8 | ||||||
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* - repetition rate 0.5 kHz, pulse duration 1 ms, fill factor 50%, current 200 mA **- repetition rate 0.5 kHz, pulse duration 2 µs, fill factor 0.1%, current 1 A ***- LEDXX - LED model in ТО-18 package with a cap LEDXX-PR - LED model in TO-18 package with parabolic reflector PR LEDXX-PRW - LED model in TO-18 package with parabolic reflector PR and window W LEDXX-TEC - LED model in TO-5 package with thermocooler TEC and cap LEDXX-TEC-PRW - LED model in TO-5 package with thermocooler TEC, parabolic reflector PR and window W LEDXX-SMD - LED model in SMD3528 (on a request from the customer)