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| www..com GaAlAs T-1 3/4 Standard 5 Infrared Emitting Diode LTE-4238/LTE-4238C/LTE-5238A/LTE-5238AC Features Selected to specific on-line intensity and radiant intensity ranges. High power out put. Mechanically and spectrally matched to the LTR-3208 series of phototransistor. Wavelength is 880nm. Package Dimensions LTE-4238/LTE-4238C Description The LTE-4238 series and LTE-5238A series are high intensity Gallium Aluminum Arsenide infrared emitting diodes mounted in clear plastic end looking packages. Gallium Aluminum Arsenide features a significant increase in the radiated output of Gallium Arsenide at the same forward current. Also with a wavelength centered at 880nanometers it more closely of silicon phototransistor. ee DataSh .com LTE-5238A/LTE-5238AC Notes: 1. All dimensions are in millimeters (inches). 2. Tolerance is 0.25mm (.010") unless otherwise noted. 3. Protruded resin under flange is 1.5mm (.059") max. 4. Lead spacing is measured where the leads emerge from the package. 5. Specifications are subject to change without notice. .com 10-26 .com DataSheet 4 U .com www..com Absolute Maximum Ratings at Ta =25 Parameter Power Dissipation Peak Forward Current(300pps, 10 Continuous Forward Current Reverse Voltage Operating Temperature Range Storage Temperature Range Lead Soldering Temperature [1.6mm (.063 in.) from body] s pulse) Maximum Rating 150 2 100 5 -40 -55 260 to +85 to +100 for 5 Seconds Unit mW A mA V Electrical Optical Characteristics at Ta=25 Parameter Symbol Part No. LTE-4238 LTE-4238C LTE-5238A LTE-5238AC LTE-4238 Radiant Intensity Ie LTE-4238C LTE-5238A LTE-5238AC Peak Emission Wavelength Spectral Line Half-Width Forward Voltage Reverse Current VF IR LTE-4238 View Angle (See Fig. 6) 2 1 Min. 0.80 0.08 6.0 6.0 Typ. 1.4 Max. Unit Test Condition IF=20mA t4U.com *Aperture Radiant Incidence Ee mW/cm 2 1.0 10.5 mW/sr 7.5 880 50 1.3 1.8 100 nm nm V A ee DataSh INFRARED PRODUCTS IF=20mA Peak IF=20mA IF=20mA IF=20mA VR=5V .com /2 LTE-4238C LTE-5238A LTE-5238AC 20 deg 40 Note: *Ee is a measurement of the average radiant incidence upon a sensing area 1cm 2 in perpendicular to and centered on the mechanical axis of the lens and 26.8mm from lens. .com .com DataSheet 4 U .com 10-27 www..com Typical Electrical/Optical Characteristic Curves (25 Ambient Temperature Unless Otherwise Noted) t4U.com .com .com 10-28 .com DataSheet 4 U .com |
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