Fairchild QED233 QED234 Plastic Infrared Light Emitting Diodes Data Manual
Summary
This high-power Infrared LED (940 nm) is designed for reliable remote sensing and control applications. Encapsulated in a clear, untinted plastic T-1 3/4 package, it provides a steady output with a medium emission angle. This manual serves as a comprehensive technical guide, detailing all absolute maximum ratings, electrical specifications, optical performance criteria, and application curves needed for system design and integration into professional electronics projects.
Page 1 Text Content
PLASTIC INFRARED LIGHT EMITTING DIODE
QED233 QED234
PACKAGE DIMENSIONS 0.195 (4.95)
REFERENCE
SURFACE 0.305 (7.75)
0.040 (1.02) NOM
0.800 (20.3) MIN
0.050 (1.25) CATHODE
0.100 (2.54) NOM
0.020 (0.51) SQ. (2X)
SCHEMATIC
NOTES:
ANODE
1. Dimensions for all drawings are in inches (mm). 2. Tolerance of ± .010 (.25) on all non-nominal dimensions
CATHODE
unless otherwise specified.
DESCRIPTION The QED233 / QED234 is a 940 nm Ga As / Al Ga As LED encapsulated in a clear untinted, plastic T-1 3/4 package.
FEATURES • = 940 nm • Chip material =Ga As with Al Ga As window • Package type: T-1 3/4 (5mm lens diameter) • Matched Photosensor: QSD122/123/124 • Medium Emission Angle, 40° • High Output Power • Package material and color: Clear, untinted, plastic • Ideal for remote control applications
2001 Fairchild Semiconductor Corporation DS300338 10/31/01 1 OF 4 www.fairchildsemi.com
Page Summary Contents For Fairchild QED233 QED234 Plastic Infrared Light Emitting Diodes Data Manual
Manual Details
| Brand | Fairchild |
|---|---|
| Pages | 4 |
| File Size | 84.50 KB |
| Published | July 10, 2026 |
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Frequently Asked Questions
What is the peak emission wavelength of the QED233 / QED234 LED?
The typical peak emission wavelength is 940 nm.
Which photosensors are matched with this infrared light emitter?
Matched photosensors include QSD122, QSD123, and QSD124.
What cleaning agents are recommended after soldering the component?
Methanol or isopropyl alcohols are recommended as cleaning agents.
What is the absolute maximum reverse voltage (VR) rating for this diode?
The absolute maximum rating for Reverse Voltage (VR) is 5V.