QEC121, QEC122, QEC123 are 880nm AlGaAs LEDs encapsulated in a T-1 (3mm) clear purple tinted plastic package. They have features such as narrow emission angle and high output power.
The document provides specifications for the Fairchild Semiconductor QEC121, QEC122, and QEC123 series of plastic infrared light emitting diodes. These devices utilize AlGaAs chip material and are encapsulated in a clear, purple-tinted plastic T-1 (3mm) package. They are designed for applications requiring a narrow emission angle of 8 degrees at 80% intensity and are matched with the QSC112/QSC113/QSC114 photosensors.
| Peak Emission Wavelength | 890 nm |
|---|---|
| Emission Angle | 18 ° |
| Forward Voltage | 1.7 V |
| Continuous Forward Current | 50 mA |
| Reverse Voltage | 5 V |
| Power Dissipation | 100 mW |
| Operating Temperature | -40 to +100 °C |
| Radiant Intensity (QEC121) | 14 mW/sr |
| Radiant Intensity (QEC122) | 27 mW/sr |
| Radiant Intensity (QEC123) | 39 mW/sr |
The peak emission wavelength is 890 nm when the forward current is 100mA.
The maximum continuous forward current rating is 50 mA.
The matched photosensors are the QSC112, QSC113, and QSC114.
The operating temperature range is from -40 to +100 °C.