SMLK18WB/K28WB Series Data Sheet Features Outline High heat radiationPSML2 series Low package by flat frame structure High Luminous Intensity Size Color WB Type 4520 (1808) 4.52.0mm (t=0.6mm) Dimensions Recommended Solder Pattern 4 . 5 0 . 1 Anode index 4 0 . 6 0 . 1 3 . 5 1 . 7 4 0 . 2 5 0 . 2 5 SMLK18series 0 . 8 5 0 . 3 SMLK28series Tolerance : 0.2 2 . 6 (unit : mm) (unit : mm) 3 . 1 5 Moisture sensitivity level(MSL) : Level 3 Specications Absolute Maximum Ratings (Ta=25C) Electrical and Optical Characteristics (Ta=25C) Peak Forward Luminous Intensity fV Emitting Power Forward Reverse Forward Voltage VF Reverse Current IR Chromaticity Luminous Intensity IV Chip Structure Part No. Operating Temp. Storage Temp. Dissipation Color Current Current Voltage Typ. I Max. V (x,y) I Min. Typ. I Typ. I F R F F F P (mW) I (mA) I (mA) V (V) T (C) T (C) D F FP R opr stg (V) (mA) (A) (V) (mA) (cd) (cd) (mA) (lm) (mA) SMLK18WBJCW (0.30, 0.28) 5.9 21 5 10 5 1 SMLK18WBJDW (0.34, 0.34) InGaN White 675 150 230* -40+100 -40+100 3.9 90 90 4.8 6.0 90 22 90 SMLK28WBJCW - (0.30, 0.28) - - 5.9 21 *1 : Duty 1/10, 1kHz www.rohm.com 1/9 2020 ROHM Co., Ltd. All rights reserved 2020.4 - Rev.011 1 . 1 0 . 4 1 . 5 0 . 1 0 . 2 1 . 5 4 2 0 . 0 5 1 . 9 8 3 . 7 5 1 1 . 4 2 . 7 5 SMLK18WB/K28WB series Data Sheet Electrical Characteristics Curves Reference Fig.1 Forward Current Fig.2 Luminous Intensity - - Forward Voltages Atmosphere Temperature 1000 1.6 I =90mA Ta=25C F 1.4 SMLK18WBJCW SMLK18WBJDW SMLK28WBJCW 100 1.2 1 10 0.8 0.6 SMLK18WBJCW SMLK18WBJDW SMLK28WBJCW 1 0.4 2.5 2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5 -40 -20 0 20 40 60 80 100 FORWARD VOLTAGE : V V ATMOSPHERE TEMPERATURE : Ta C F Fig.3 Luminous Intensity - Forward Current Fig.4 Derating 160 1.4 Ta=25C 150 140 SMLK18WBJCW SMLK18WBJDW 130 1.2 SMLK28WBJCW 120 110 1 100 90 0.8 80 70 0.6 60 50 0.4 40 30 SMLK18WBJCW 0.2 20 SMLK18WBJDW 10 SMLK28WBJCW 0 0 -40 -20 0 20 40 60 80 100 120 0 15 30 45 60 75 90 105 120 135 150 AMBIENT TEMPERATURE : Ta C FORWARD CURRENT : I mA F www.rohm.com 2/9 2020 ROHM Co., Ltd. All rights reserved 2020.4 - Rev.011 RELATIVE LUMINOUS INTENSITY FORWARD CURRENT : I mA F MAXIMUM FORWARD CURRENT : mA RELATIVE LUMINOUS INTENSITY a.u.