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| letex technology corp. surface mount chip led lamps model no. lem - 54221t features: application: ultra compact (2.01.250.8) indicators on printed circuit boards lcd back - lights auto insertable. using 8 mm wide tape illuminations ultra low profile automotive - telecommunication emitted color material wavelength (nm) lens color u l tr a yellow green algainp 574 water clear absolute maximum ratings (ta = 25 ) characteristic symbol rating unit power dissipation pm 78 mw forward direct current ifm 30 ma peak forward current ifp 100 ma reverse voltage vrm 5 v operating temperature topr - 25 to +80 storage temperature tstg - 30 to +85 electro - optical characteri stics (ta = 25 ) characteristic symbol condition min. typ. max. unit luminous intensity iv if=20ma 20 45 mcd forward voltage vf if=20ma 2.2 2.7 v reverse current ir vr=5v 10 a peak emission wavelength p if=20ma 575 nm dominant wavelength d if=20ma 574 nm viewing angle 2 1/2 if=20ma 130 deg. package dime nsions of device recommended soldering pattern for reflow soldering note: 1. all dimensions are in millimeters . 2. tolerance is 0.25mm unless otherwise specified.
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