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ligitek electronics co.,ltd. property of ligitek only data sheet LG-020WKZ-DT led smd lead-free parts pb doc. no : qw0905-lg- 020wkz-dt rev. : b date : 01 - dec. - 2006
features: 1. side view white led. 2. white smt package. 3. leadframe package with 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 backlighting and coupling in light guide. 7.esd protection. 8.pb free descriptions: the lg-020 smd has wide viewing angle,low power consumption and white leds are devices which are materialized by combing blue leds and special phos phors.this feature makes the led ideal for light guide application. applications: 1. lcd back light. 2. mobile phones. 3. indicators. 4. switch lights. color device selection guide: ingan/gan part no LG-020WKZ-DT material white emitted yellow diffused lens ligitek electronics co.,ltd. property of ligitek only part no. LG-020WKZ-DT page 1/13
ligitek electronics co.,ltd. property of ligitek only note : 1.all dimension are in millimeter tolerance is ? 0.1mm unless otherwise noted. 2.specifications are subject to change without notice. note : the tolerances unless mentioned is ? 0.1mm,angle ? 0.5. unit=mm. package dimensions recommended soldering pad dimensions part no. LG-020WKZ-DT polarity cathode andoe page 2/13 1.5 1.5 2.1 0.85 0.63 0.7 0.63 0.7 0.6 0.45 0.75 1.2 3.6 3.8 1.9 2.3
0.31 ---- ---- ---- cie_y ---- ---- 110 2 c 1/2 v f ---- 3.3 deg if=20ma if=20ma v mcd ligitek electronics co.,ltd. property of ligitek only max 260 j for 5 sec max typical electrical & optical characteristics (ta=25 j ) absolute maximum ratings at ta=25 j power dissipation forward current electrostatic discharge operating temperature reverse current @5v peak forward current duty 1/10@10khz soldering temperature storage temperature -40 ~ +85 t opr cie_x tstg tsol symbol items ---- min. 0.3 ---- typ. max. -40 ~ +90 symbol pd i fp esd ir i f parameter 50 2000 20 80 100 ratings part no. LG-020WKZ-DT if=20ma condition ---- unit j j ma g a v unit mw ma page 3/13 if=20ma iv forward voltage viewing angle luminous intensity chromaticity coordinates ---- ---- note : 1.the forward voltage data did not including 0.1v testing tolerance. 2. the luminous intensity data did not including 10% testing tolerance. 1050 960
luminous intensity classification (at 20ma) part no. LG-020WKZ-DT ligitek electronics co.,ltd. property of ligitek only page 4/13 forward voltage classification (at 20ma) 3 4 2 1 3.4 3.2 2.8 3.0 bin code min. vf(v) 3.4 3.6 3.2 3.0 max. iv(mvd) bin code 960 min. 1160 max. v-2 w-1 1160 1400
chromaticity coordinates specifications for bin grading ligitek electronics co.,ltd. property of ligitek only part no. LG-020WKZ-DT page 5/13 0.280 0.27 b4 0.30 0.285 b5 0.340 0.31 0.30 0.30 0.31 0.30 0.285 0.300 0.325 0.325 b3 b2 0.255 0.28 0.29 0.29 0.29 0.29 0.270 0.310 0.310 0.270 0.28 0.28 0.27 0.28 0.295 0.295 0.240 0.255 bin b1 y x 0.27 0.27 0.26 0.26 0.280 0.240 0.225 0.265
ligitek electronics co.,ltd. property of ligitek only page 6/13 1.tolerance of cie chromaticity coordinate(x.y) 0.01. notes: cie chromaticity diagram part no. LG-020WKZ-DT b b2 b1 b3 b4 b5
1.0 forward current(ma) relative intensity normalize @20ma forward current(ma) fig.4 relative intensity vs. temperature ambient temperature( j ) 20 intensity 20 700 500 400 0 600 wavelength (nm) 800 spectral radiance fig.5 luminous spectrum(ta=25 j ) 60 40 100 80 forward voltage@20ma normalize @25 j relative intensity@20ma normalize @25 j 80 0.9 ambient temperature( j ) -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 part no. LG-020WKZ-DT 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 page 7/13
ligitek electronics co.,ltd. property of ligitek only LG-020WKZ-DT part no. 12mm tape,7"reel description label packing specifications ?e note : the tolerances unless mentioned is ? 0.1mm,angle ? 0.5. unit=mm. carrier tape dimensions part no. LG-020WKZ-DT quantity/reel label page 8/13 5000 devices aluminum moist-proof bag 5.5 1.75 12 4 4 2 1 . 5 0.279 0.72 4 1.35 andoe polarity cathode
reel dimensions ligitek electronics co.,ltd. property of ligitek only part no. LG-020WKZ-DT label explanation part no. : LG-020WKZ-DT lot no. : gs1-6b0099 page 9/13 q'ty(pcs) : 5000 pcs bin/hue : v-2 / b3 bin : luminous intensity hue : chromaticity coordinates (cie_x , cie_y) 3.0 - 3.2 : forward voltage vf:3.0 - 3.2 r 13.5 ? 1.0 0.2 0.4 0.6 0.6 0.4 0.8 0.2 2.5 ? 0.5 60 ? 1.0 178 ? 1.5 13.2 ? 1.0 16.2 ? 1.0 0.8 ??1qlu~a?|3--?q ligitek electronics co., ltd. ligitek led pb
ligitek electronics co.,ltd. property of ligitek only 3. 10 inner boxes / carton 4. carton size : l x w x h 49cm x 46cm x 29cm part no. LG-020WKZ-DT 1. 5 bag / inner box 2. inner box size : l x w x h 23cm x 8.5cm x 26cm box explanation page 10/13 l w h w h l
time 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. temp. ( j ) rising +5 j /sec 150 120 240 preheat cooling -5 j /sec reflow temp/time(lead solder) pre-heating 1 - 5 c / sec above 220c ligitek electronics co.,ltd. property of ligitek only part no. LG-020WKZ-DT reflow temp/time(pb-free) 180 - 200c 5 sec. max. 260 c max. 1 - 5 c / sec page 11/13 60sec.max. 120sec.max. 60 ~ 120 sec 5sec soldering iron: basic spec is ?? 5 seconds when 260 . j power dissipation of iron should be smaller than 25w, and temperature should be controllable. surface temperature of the device should be under 280 j for 3 seconds.
ligitek electronics co.,ltd. property of ligitek only circuit model b drive method: led is a current operated device, and therefore, require r some kind of current limiting incorporated into the driver circuit. this current limiting typically takes the form of a current limiting resistor placed in series with the led. consider worst case voltage variations than could occur across the current limiting resistor. the forward current should not be allowed to c hange by more than 40 % of its desired value. led (a) recommended circuit. (b) the difference of brightness between led could be f ound due to the vf-if characteristics of led. esd(electrostatic discharge): static electricity or power surge will damage the led. use of a c onductive wrist band or anti-electrosatic glove is recommended when handing these led. all devices, equipment and machinery must be properly grounded. cleaning: use alcohol-based cleaning solvents such as isopropyl alc ohol to clean the led. circuit model a led part no. LG-020WKZ-DT page 12/13 precautions for use: storage time: 1.the operation of temperatures and rh are : 5 j ~35 j ,rh60%. 2.once the package is opened, the products s hould 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 pr oducts within a year at ?? 30 j and ?? 90% relative humidity(rh) (from production date). 3.if opened more than one week in an atmos phere 5 j ~ 35 j ,rh60%, they should be treated at 60 j? 5 j fo r 15hrs.
1.ta=-40 j? 5 j 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 st andard 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 j? 5 j 2.dwell time= 10 max. 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 part no. LG-020WKZ-DT 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 ~ j 25 ~ - j 40 j 30mins 15mins 30mins 2.100 cyeles 1.ir-reflow in-board,2 times 2.ta=105 j 5 j & -40 j 5 j (30min) (30min) 3.total 100 cycles 1.ir-reflow in-board, 2 times 2.ta=85 j 5 j 3.rh=90 %~95% 4.t=500hrs2hrs 1.ta=105 j 5 j 2.t=500 hrs

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