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 Specications Absolute Maximum Ratings (Ta=25C) Electrical and Optical Characteristics (Ta=25C) Peak Forward Emitting Power Forward Reverse Forward Voltage V Reverse Current I Chromaticity Luminous Intensity IV Luminous Intensity fV F R Chip Structure Operating Temp. Storage Temp. Part No. Color Dissipation 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) (V) (mA) (A) (V) (mA) (cd) (cd) (mA) (lm) (mA) D F FP R opr stg White (5000K) (0.36, 0.36) SMLK18WBJAW 4.8 17 3.3 White (3000K) (0.44, 0.40) SMLK18WBJBW 4.5 16 5 10 5 1 (0.30, 0.28) SMLK18WBJCW InGaN 675 150 -40+100 -40+100 3.9 90 90 5.9 90 21 90 230* (0.34, 0.34) SMLK18WBJDW White 4.8 6.0 22 (0.30, 0.28) SMLK28WBJCW - - - 5.9 21 *1 : Duty 1/10, 1kHz www.rohm.com 1/9 2016 ROHM Co., Ltd. All rights reserved 2017.7 - Rev.006 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 1.4 SMLK18WBJAW I =90mA Ta=25C F SMLK18WBJBW SMLK18WBJCW 1.2 SMLK18WBJDW SMLK28WBJCW 100 1 0.8 10 SMLK18WBJAW 0.6 SMLK18WBJBW SMLK18WBJCW SMLK18WBJDW SMLK28WBJCW 0.4 1 2.0 2.5 3.0 3.5 4.0 4.5 5.0 -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 1.5 160 SMLK18WBJAW Ta=25C SMLK18WBJBW 140 SMLK18WBJCW SMLK18WBJDW SMLK28WBJCW 120 1.0 100 80 60 0.5 40 SMLK18WBJAW SMLK18WBJBW SMLK18WBJCW 20 SMLK18WBJDW SMLK28WBJCW 0.0 0 0 50 100 150 -40 -20 0 20 40 60 80 100 AMBIENT TEMPERATURE : Ta C FORWARD CURRENT : I mA F www.rohm.com 2/9 2016 ROHM Co., Ltd. All rights reserved 2017.7 - Rev.006 RELATIVE LUMINOUS INTENSITY FORWARD CURRENT : I mA F MAXIMUM FORWARD CURRENT : mA RELATIVE LUMINOUS INTENSITY a.u.