16.06.2011 SMT720 1 of 4 SMT720 technical data visible led, smt algaas SMT720 is a algaas led mounted on the lead frame as top led package and sealed with epoxy resin for damp proof. on forward bias, it emits a radiation of typical 8 mw at a peak wavelength of 720 nm. specifications ? structure: algaas ? peak wavelength: typ. 720 nm ? optical output power: typ. 8 mw ? package: ppa resin, epoxy resin absolute maximum ratings (t a =25c) item symbol value unit power dissipation p d 100 mw forward current i f 50 ma pulse forward current** i fp 200 ma reverse voltage v r 5 v operating temperature t opr -20 ? +80 c storage temperature t stg -30 ? +80 c soldering temperature * t sol 240 c * must be completed within 5 seconds ** max duty cycle 1%, max puls width 10s (unit: mm) electro-optical characteristics item symbol condition min. typ. max. unit forward voltage v f i f = 50 ma - 1.90 2.30 v reverse current i r v r = 5 v - - 10 a total radiated power* p o i f = 50 ma 4.0 8.0 - mw radiation intensity i e i f = 50 ma 2.0 5.0 - mw/sr peak wavelength p i f = 50 ma - 720 - nm half width ? i f = 50 ma - 20 - nm viewing half angle 1/2 i f = 50 ma - 55 - deg. rise time t r i f = 50 ma 80 ns fall time t f i f = 50 ma 80 ns total radiated power is measured by photodyne #500 radiant intensity is m easured by tektronix j-6512 notes ? do not view directly into the emi tting area of the led during operation! ? the above specifications are for reference purpose only and subjected to change without prior notice.
16.06.2011 SMT720 2 of 4 typical performance curves forward current ? forward voltage relative radiant intensity ? pulsed forward current forward current ? pulse duration forward voltage ? ambient temperature
16.06.2011 SMT720 3 of 4 relative radiant intensity ? ambient temperature allowable forward current ? ambient temperature peak wavelength peak wavelength ? ambient temperature
16.06.2011 SMT720 4 of 4 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. temperature profile pcb footprint layout (unit: mm) static electricity ? leds are very sensitive to stat ic electricity and surge voltage. it is recommended to always wear a wrist band or an anti-electrostatic glove when handling the leds. ? all devices, equipment and machinery must be grounded properly. it is recommended that precautions should be taken against surge volt age to the equipment that mounts the leds.
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