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surface mount le d tape and reel ligitek electronics co.,ltd. property of ligitek only pb lead-free parts doc. no : qw0905-LG-020WK-A02 rev. : a date : 28 - mar. - 2013 LG-020WK-A02 data sheet l dcc
features: 1. side view white led. 2. white smt package. 3. leadframe package wi th individual 2 pin. 4.wide viewing angle. 5.soldering methods:ir reflow soldering. 6.feature of the device:more light due to higher optical efficiency;extremely wide viewing angle;ideal for backli ghting and coupling in light guide. descriptions: the lg-020wk smd has wide viewing ang le,low power consumption and white leds are devices which are materialized by combing blue leds and special phos phors.this feature makes the le d ideal for light guide application. applications: 1. lcd back light. 2. mobile phones. 3. indicators. 4. switch lights. color device selection guide: ingan material p ink emitted yellow diffused lens ligitek electronics co.,ltd. property of ligitek only part no. LG-020WK-A02 page 1/13 part no LG-020WK-A02
ligitek electronics co.,ltd. property of ligitek only note : 1.all dimension are in millimeter tolerance is 0.2mm unless otherwise noted. 2.specifications are subject to change without notice. note : the tolerances unless mentioned is 0.1mm,unit=mm. package dimensions recommended soldering pad dimensions page 2/13 2.1 1.5 0.85 1.5 part no. LG-020WK-A02 2.3 1.9 3.8 3.6 0.7 0.45 0.6 0.63 1.2 0.75 andoe polarity 0.7 0.63 cathode
ligitek electronics co.,ltd. property of ligitek only typical electrical & opti cal characteristics (ta=25 ) absolute maximum ratings at ta=25 power dissipation forward current electrostatic discharge operating temperature reverse current @5v peak forward current duty 1/10@10khz storage temperature - 20 ~ + 80 t opr tstg - 30 ~ + 100 symbol pd i fp esd ir i f parameter 50 500 30 120 100 ratings ma a v unit mw ma page 3/13 luminous intensity iv if=20ma mcd viewing angle 2 1/2 chromaticity coordinates forward voltage v f x y if=20ma deg if=20ma if=20ma if=20ma v ---- ---- min. symbol condition max. typ. unit note : 1.the forward voltage data did not including 0.1v testing tolerance. 2.the luminous intensity data did not including 15% testing tolerance. 3.the color coordinates measurememt allowance is 0.01 testing tolerance. items min. 500 0.2767 0.1148 2.8 ---- 600 ---- ---- ---- ---- 0.3720 3.6 0.3768 110 ---- part no. LG-020WK-A02
luminous intensity classification ligitek electronics co.,ltd. property of ligitek only page 4/13 iv(mcd) at 20ma bin code min. max. part no. LG-020WK-A02 forward voltage classification 6 5 7 8 bin code 1 3 2 4 3.5 3.4 3.3 3.2 3.3 3.4 3.6 3.5 vf(v) at 20ma 2.8 2.9 3.0 3.1 min. max. 2.9 3.1 3.0 3.2 u21u22 500 600 u23u24 600 700 u25u26 700 800 v11v12 800 900
chromaticity coordinates spec ifications for bin grading ligitek electronics co.,ltd. property of ligitek only page 5/13 part no. LG-020WK-A02 x color coordiante at20ma bin code x y 1 x y 2 x y 3 4 y pp1 0.3648 0.197 0.3708 0.189 0.3488 0.1724 0.3427 0.1804 pp2 0.3708 0.189 0.3768 0.181 0.3548 0.1644 0.3488 0.1724 pp3 0.3427 0.1804 0.3488 0.1724 0.3268 0.1559 0.3207 0.1639 pp4 0.3488 0.1724 0.3548 0.1644 0.3328 0.1479 0.3268 0.1559 pp5 0.2987 0.1473 0.3207 0.1639 0.3268 0.1559 0.3047 0.1393 pp6 0.3268 0.1559 0.3328 0.1479 0.3108 0.1313 0.3047 0.1393 pp7 0.2987 0.1473 0.3047 0.1393 0.2827 0.1228 0.2767 0.1307 pp8 0.3047 0.1393 0.3108 0.1313 0.2887 0.1148 0.2827 0.1228
ligitek electronics co.,ltd. property of ligitek only cie chromaticity diagram page 6/13 part no. LG-020WK-A02 0.10 0.12 0.14 0.16 0.18 0.20 0.26 0.28 0.30 0.32 0.34 0.36 0.38 0.40 pp1 pp2 pp3 pp5 pp7 pp4 pp6 pp8
1.0 forward current(ma) relative intensity normalize @20ma forward current(ma) fig.4 relative intensity vs. temperature ambient temperature( ) 20 intensity 20 700 500 400 0 600 wavelength (nm) 800 spectral radiance fig.5 luminous spectrum(ta=25 ) 60 40 100 80 forward voltage@20ma normalize @25 relative intensity@20ma normalize @25 80 0.9 ambient temperature( ) -40 -20 0 0.8 20 40 60 1.0 1.1 0.0 0.5 100 -20 -40 0 2.0 1.0 1.5 2.5 fig.3 forward voltage vs. temperature forward voltage(v) 1.2 1.0 2.0 1 0 1 3.0 4.0 3.0 0.5 0.0 5.0 1 10 100 40 80 60 1000 100 fig.2 relative intensity vs. forward current ligitek electronics co.,ltd. property of ligitek only wk chip typical electro- optical characteristics curve fig.1 forward current vs. forward voltage 1000 10 100 3.0 2.5 2.0 1.5 -30 dc forward current [ma] 10 0 20 -20 0 -10 10 40 30 20 50 60 70 90 80 100 ambient temperature ta ( ) 30 40 50 60 70 80 fig.6 forward current vs. temperature page 7/13 part no. LG-020WK-A02
ligitek electronics co.,ltd. property of ligitek only label packing specifications ? note : the tolerances unless mentioned is 0.1mm,angle 0.5. unit=mm. carrier type dimensions label page 8/13 aluminum moist-proof bag part no. description quantity/reel 3000 pcs 12.0mm tape,7"reel 0.6 0.8 0.2 0.4 0.8 0.6 0.4 0.2 LG-020WK-A02 1.5 2 4 4 1.75 0.72 12 0.279 4 5.5 part no. LG-020WK-A02 polarity
reel dimensions ligitek electronics co.,ltd. property of ligitek only label explanation page 9/13 13.5 1.0 0.2 0.4 0.6 0.6 0.4 0.8 0.2 2.0 0.5 60.0 1.0 178 1.5 9.0 1.0 12.0 1.0 0.8 vf:3-3.1 ligitek electronics co., ltd. pb part : lot : qty(pcs): bin/hue : gs1-070119 3000 u21u22/pp1 LG-020WK-A02 vf : forward voltage (cie_x , cie_y) hue : chromaticity coordinates bin : luminous flux part no. LG-020WK-A02
ligitek electronics co.,ltd. property of ligitek only 1. 4 bag / inner box 2. inner box size : l x w x h 23cm x 8.5cm x 26cm box explanation page 10/13 w h l part no. LG-020WK-A02 3. 10 inner boxes / carton 4. carton size : l x w x h 58cm x 34cm x 35cm l w h
ligitek electronics co.,ltd. property of ligitek only page 11/13 part no. LG-020WK-A02 recommended soldering conditions 1. hand solder basic spec is 280 3 sec one time only. Q 3.after soldering,do not warp the circuit board. note: 1.reflow soldering should not be done more than two times. 2.when soldering,do not put stress on the leds during heating. 120 sec.max. preheat 180~200c 3 pb-free reflow solder 1~5c/sec 260c max. 10sec.max above 220c 60 sec.max. 1~5c/sec 120 ~ 180 sec soldering heat max. 260 120 ~ 150 2. wave solder preheat 245 5 within 5 sec 6c/sec
ligitek electronics co.,ltd. property of ligitek only circuit model b drive method: led is a current operated device, and therefore, requ irer some kind of current limiting incorporated into the driver circuit. this current limiting typically take s the form of a current limi ting resistor placed in series with the led. consider worst case voltage variations than could occur across the current limiting resistor. the forwrd current should not be allowed to change by more than 40% of its desired value. led (a) recommended circuit. (b) the difference of brightness between led could be found due to the vf-if characteristics of led. esd(electrostatic discharge): static electricity or power surge will damage the le d. use of a conductive wrist band or anti-electrosatic glove is recommended when handing these led. al l devices, equipment and machinery must be properly grounded. cleaning: use alcohol-based cleaning solvents such as isopropyl alcohol to clean the led. circuit model a led precautions for use: storage time: 1.the operation of temperatures and rh are : 5 ~35 ,rh60%. 2.once the package is opened, the products should be used within a week. otherwise, they should be kept in a damp proof box with descanting agent. considering the tape life, we suggest our customers to use our products within a year(from production date). 3.if opened more than one week in an atmosphere 5 ~ 35 ,rh60%, they should be treated at 60 5 fo r 15hrs. page 12/13 part no. LG-020WK-A02
1.ta=-40 5 2.t=1000 hrs criteria for judgement l.s.l x 0.5 if=20ma iv luminous intensity 2.l.s.l.:lower standard level. 1.u.s.l.:upper standard level. note: reverse current forward voltage item (2)criteria for judging the damage environmental test temperature cycling vr=5v if=20ma test conditions symbol vf ir min. - - 1.t.sol=260 5 2.dwell time= 10max. reflow soldering test high temperature high humidity storage test thermal shock test - 22 u.s.l x1.2 u.s.l x2.0 max. 22 22 22 ligitek electronics co.,ltd. property of ligitek only (1)test items and results reliability test: classification endurance test 1.ta=under room temperature as per data sheet maximum rating. 2.if=20ma 3.t=1000 hrs high temperature storage test low temperature storage test test item operating life test test condition 22 22 sample size 22 page 13/13 1.105 ~ 25 ~ - 40 30mins 15mins 30mins 2.100 cyeles 1.ir-reflow in-board,2 times 2.ta=105 5 & -40 5 (30min) (30min) 3.total 100 cycles 1.ir-reflow in-board, 2 times 2.ta=85 5 3.rh=90%~95% 4.t=500hrs2hrs 1.ta=105 5 2.t=500 hrs part no. LG-020WK-A02

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