07.04.2011 SMC870 1 of 2 SMC870 technical data invisible led, smd algaas SMC870 are algaas leds mounted on a cerami c smd package and sealed with silicone resin for damp proof. on forward bias, it emits a radiation of typical 19 mw at a peak wavelength of 870 nm. specifications ? structure: algaas ? peak wavelength: typ. 870 nm ? optical output power: typ. 19 mw ? package: ceramic smd, silicon or epoxy resin absolute maximum ratings (t a =25c) item symbol value unit power dissipation p d 160 mw forward current i f 100 ma pulse forward current * 1 i fp 1000 ma reverse voltage v r 5 v juntion temperatur t j 100 c thermal resistance r th 190 k/w operating temperature t opr -30 ? +80 c storage temperature t stg -30 ? +80 c soldering temperature * 2 t sol 255 c * 1 duty = 1%, pulse width = 10 s * 2 must be completed within 5 seconds (unit: mm) electro-optical characteristics item symbol condition min. typ. max. unit i f = 50 ma - 1.45 1.6 forward voltage v f i f =100ma, tp=20ms - 1.5 1.8 v reverse current i r v r = 5 v - - 10 a i f = 50 ma 15 19 - total radiated power p o i f =100ma, tp=20ms - 38 - mw i f = 50 ma - 10 - radiation intensity i e i f =100ma, tp=20ms - 20 - mw/sr peak wavelength p i f = 50 ma 860 870 880 nm half width ? i f = 50 ma - 40 - nm viewing half angle 1/2 i f = 50 ma - 55 - deg. rise time t r i f = 50 ma - 15 - ns fall time t f i f = 50 ma - 10 - ns brightness is measured by tektronix j-16 total radiated power is measured by photodyne #500 notes ? do not view directly into the emitting area of the led during operation! ? the above specifications are for reference purpose only and subjected to change without prior notice.
07.04.2011 SMC870 2 of 2 recommended land layout (unit: mm) 1. soldering conditions ? do not apply any stress to the lead particularly when heat. ? after soldering the leds should be protected from mechanical shock or vibration until the leds return to room temperature. ? when it is necessary to clamp the leds to prevent soldering failure, it is important to minimize the mechanical stress on the leds. soldering conditions 2. static electricity ? the leds are very sensitive to static electricity and surge voltage. so it is recommended that a wrist band or an anti-electrostatic glove be used when handling the leds. ? all devices, equipment and machinery must be grounded properly. it is recommended that precautions should be taken against surge voltage to the equipment that mounts the leds.
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