1/2 www.rohm.com c 2010 rohm co., ltd. all rights reserved. 2010.06 - rev.b infrared light emitting diode, side-view type sim-22st the sim-22st is a gaas infrared light emitting di ode housed in side emission. high output with ? 1.5 lens. ? applications ? dimensions (unit : mm) light source for sensors ? features 1) compact package (4.7x4.6 mm) with lens. 2) high efficiency, high output. 3) emission spectrum well suited to silicon detectors ( ? p = 950 nm). 4) good current-optical output linearity. 5) long life, high reliability. ? absolute maximum ratings (ta=25 ? c) parameter symbol p d i f i fp ? v r topr tstg limits ? 25 to +85 ? 30 to +100 50 5 80 0.5 unit ma v mw a c c ? pulse width = 0.1ms, duty ratio 1% forward current reverse voltage power dissipation pulse forward current operating temperature storage temperature ? electrical and opti cal characteristics (ta=25 ? c) parameter symbol v f i r p ? 1/2 tr tf min. ? 0.48 ? ? ? ? ? ? typ. 0.8 1.3 1.3 ? 950 40 30 1.0 max. ? 1.94 1.6 10 ? ? ? ? unit mw/sr i f = 10ma i f = 10ma ? i f = 50ma v r = 5v i f = 10ma i f = 20ma i f = 50ma i f = 50ma ma v a nm nm deg s fc ? 1.0 ? i f = 50ma mhz conditions emitting strength emitting strength forward voltage reverse current peak light emitting wavelength spectral line half width half-viewing angle response time cut-off frequency i e i e ? according to our measurement procedures. 4.1 4.6 0.1 (2.54) 0.64 1.0 1.9 2.54 0.1 1.8 0.05 2.8 4.7 0.1 1.0 1.5 12min. r0.75 r0.5 r0.5 2 ? 0.45 0.40 2 ? 0.65 2-c0.7 1 cathode 2 anode 1 2 gate remainder 0.3max. 0.15 notes: 1. tolerances are 0.2 unless otherwise indicated. 2. value in parenthese is size at base of leads.
2/2 www.rohm.com c 2010 rohm co., ltd. all rights reserved. 2010.06 - rev.b data sheet sim-22st ? electrical and optical characteristic curves forward current : i f (ma) ambient temperature : ta( c) ? 20 0 40 60 80 20 10 0 0 20 10 30 40 50 fig.1 forward current falloff forward current : i f ( ma) forward voltage : v f ( v) 0 10 20 30 40 50 60 70 0.4 0 0.8 1.2 1.6 fig.2 forward current vs. forward voltag e 75 c 50 c 25 c 0 c ? 25 c emitting strength i : i e (mw / sr) forward current : i f (ma) 10 0 2030405 0 0 14 2 4 6 8 10 12 fig.3 emitting strength vs. forward current ? 25 10 0 75 50 25 0 10 20 50 100 200 relative emitting strength : i e (% ) ambient temperature : ta ( c) fig.4 relative emitting strength vs . ambient temperature relative optical output : p o (%) optical wavelength : ( nm) 920 900 940 960 980 100 0 0 20 40 60 80 100 fig.5 wavelength fig. 6 directional pattern relative emitting strength (%) 100 80 60 40 20 0 0 20 40 60 80 100 relative emitting strength (%) angular displacement : (deg) 10 0 20 30 40 50 60 70 80 90 10 20 30 40 50 60 70 80 9 0
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