SML31＊Series LED lamps Small,chip LEDs (Blue . Green) SML31 ∗ Series The SML31＊series are small, chip LEDs. The compact and leadless design of these LED allows for high mounting density. !External dimensions (Units : mm) !Features 1) Two colors, three types (Blue and Green) 2) Rectangular and leadless (1.6x0.8mm, 0.8mm thick) 3) Can be mounted by automatic mounting. 0.25 0.8 0.8 1.6+0.2 0 1.2 Cathode index 1.0 Electrode Tolerances are ±0.1 unless other wise noted: !Selection guide Emitting color Blue (GaN) Lens Transparent clear Blue (InGaN) Green (InGaN) SML310BAT SML311BBT SML311EBT !Absolute maximum ratings (Ta=25°C) Parameter Limits Symbol SML310BAT SML311BBT 94 Unit SML311EBT 84 mW Power dissipation PD Forward current IF Peak forward current IFP Reverse voltage VR 5 V Operating temperature Topr −20∼+80 ˚C Storage temperature Tstg −30∼+100 ˚C mA 20 70 100 mA* * Duty 1 / 10 , 1KHZ 1/3 SML31＊Series LED lamps !Electrical and optical characteristics (Ta=25°C) Parameter Reverse current Forward voltage Color VF(V) Type Peak wavelength Spectral line half width Cond. λP(m) Cond. ∆λ(nm) Cond. Luminous intensity Cond. IR(µA) Cond. IV(mcd) Typ. Max. IF(mA) Max. VR(V) Min. Typ. IF(mA) Typ. IF(mA) Typ. IF(mA) SML310BAT Blue 3.8 4.7 20 100 5 1.4 3.6 20 428 20 65 20 SML311BBT Blue 3.5 4.2 20 100 5 5.6 14 20 468 20 26 20 SML311EBT Blue 3.5 4.2 20 100 5 36 90 20 523 20 36 20 !Directional pattern ANGLE (˚) (X-Y) 20 10 0 10 20 30 20 40 20 30 40 80 80 90 100 90 100 50 70 70 80 80 60 60 70 70 50 50 60 60 0 10 40 50 50 50 0 10 30 30 40 90 100 ANGLE (˚) (X'-Y' ) 50 RELATIVE LUMINOUS INTENSITY (%) 0 90 100 50 RELATIVE LUMINOUS INTENSITY (%) Fig. 1 Directional pattern !Electrical characteristics curves 20 10 SML310 5.0 2.0 1.0 2.5 3.0 3.5 FORWARD VOLTAGE : VF (V) Fig.2 Forward current vs. forward voltage 4.0 IF=20mA 1.4 SML310 1.2 1.0 SML311 0.8 0.6 0.4 −20 0 20 40 60 80 Ta=25 C RELATIVE LUMINOUS INTENSITY:(%) SML311 150 1.6 Ta=25 C RELATIVE LUMINOUS INTENSITY FORWARD CURRENT : IF (mA) 50 100 SML310 SML311 50 0 0 10 CASE TEMPERATURE : Tc ( C ) FORWARD CURRENT:(mA) Fig.3 Lumirons intensity vs.casetemperature Fig.4Luminous intensity vs. forward current 20 2/3 SML31＊Series SML311 SML310 3.5 1 1 10 100 1000 PULSE DURATION : Tw (µs) 10000 Fig.5 Maximum tolerable peakcurr ent vs. Dulse duration MAXIMUM FORWARD CURRENT : (mA) 100Hz 1kHz 300Hz 5 3kHz 10kHz RATIO of MAXIMUM TOLERABLE PEAK CURRENT IF peak Max. to MAXIMUM TOLERABLE DC CURRENT IF Max. LED lamps 30 20 10 0 -20 -10 0 10 20 30 40 50 60 70 80 90 100 AMBIENT TEMPERATURE : Ta ( C) Fig.6 Maximum forward current vs. ambient temperature 3/3