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lite-on dcc release lite-on technology corp. / optoelectronics no.90,chien 1 road, chung ho, new taipei city 23585, taiwan, r.o.c. tel: 886-2-2222-6181 fax: 886-2-2221-1948 / 886-2-2221-0660 http://www.liteon.com/opto smd ledproduct data sheetLTST-C21KRKT-2A spec no.: ds22-2006-122effective date: 08/22/2006revision: - bns-od-fc001/a4 bns-od-fc001/a4 bns-od-fc001/a4 bns-od-fc001/a4
lite - on technology corporation p r o p e r t y o f l i t e - o n o n l y features * meet rohs, green product . * reverse mount chip led. * ultra bright alingap chip led. * package in 8mm tape on 7" diameter reels. * eia std package. * i.c. compatible. * compatible with automatic placement equipment. * compatible with infrar ed and vapor phase reflow solder process. package dimensions part no. lens source color ltst - c21krkt - 2a water clear allngap red notes: 1. all dimensions are in millimeters (inches). 2. tolerance is 0.10 mm (.004") un less otherwise noted. part no. : ltst - c21krkt - 2a page : 1 of 11 bns - od - c131/a4
lite - on technology corporation p r o p e r t y o f l i t e - o n o n l y absolute maximum ratings at ta=25 parameter ltst - c21krkt - 2a unit power dissipation 75 mw peak forward current (1/10 duty cycle, 0.1ms pulse width) 80 ma dc f orward c urrent 30 ma derating linear from 50 c 0.4 ma/ c reverse voltage 5 v operating temperature range - 55 c to + 85 c storage temperature range - 55 c to + 85 c wave soldering condition 260 c fo r 5 seconds infrared soldering condition 260 c for 5 seconds vapor phase soldering condition 215 c for 3 minutes part no. : ltst - c21krkt - 2a page : 2 of 11 bns - od - c131/a4
lite - on technology corporation p r o p e r t y o f l i t e - o n o n l y suggest ion profile: (1) suggest ion ir reflow profile for normal process (2) suggest ion ir reflow profile for pb free process part no. : ltst - c21krkt - 2a page : 3 of 11 bns - od - c131/a4 r e c o m m e n d e d p ro file b e tw e e n a s s e m b le a n d h e a t-r e s is ta n c e l in e t h e p ro file is a v a ila b le th a t m u s t to u s e s n a g c u s o ld e r p a s te
lite - on technology corporation p r o p e r t y o f l i t e - o n o n l y electrical optical characteristics at ta=25 parameter symbol part no. ltst - min. typ. max. u nit test condition luminous intensity iv c21krkt - 2a 2.80 71.0 mcd if = 2ma note 1 viewing angle 2 1/2 c21krkt - 2a 70 deg note 2 (fig.6) peak emission wavelength p c21krkt - 2a 639 nm measurement @peak (fig.1) dominant wavelength d c21krkt - 2a 631 nm if = 2ma note 3 spectral line half - width ? c21krkt - 2a 20 nm forward voltage vf c21krkt - 2a 2.0 2.4 v if = 2ma reverse current ir c21krkt - 2a 10 a vr = 5v capacitance c c21krkt - 2a 40 pf vf = 0 f = 1mhz notes: 1. luminous intensity is measured w ith a light sensor and filter combination that approximates the cie eye - response curve. 2. 1/2 is the off - axis angle at which the luminous intensity is half the axial luminous intensity. 3. the dominant wavelength, d is derived fr om the cie chromaticity diagram and represents the single wavelength which defines the color of the device. part no. : ltst - c21krkt - 2a page : 4 of 11 bns - od - c131/a4
lite - on technology corporation p r o p e r t y o f l i t e - o n o n l y bin code list part no. : ltst - c21k rkt - 2a page : 5 of 11 bns - od - c131/a4 luminous intensity unit : mcd @2ma bin code min. max. h 2.80 4.50 j 4.50 7.10 k 7.10 11.20 l 11.20 18.00 m 18.00 28.00 n 28.00 45.00 p 45.00 71.00 tolerance on each intensity bin is +/ - 15%
lite - on technology corporation p r o p e r t y o f l i t e - o n o n l y typical electrical / optical characteristics curves (25 ? c ambient temperature unless otherwise noted) part no. : ltst - c21krkt - 2a page : 6 of 11 bns - od - c131/a4
lite - on technology corporation p r o p e r t y o f l i t e - o n o n l y clea ning do not use unspecified chemical liquid to clean led they could harm the package. if clean is necessary, immerse the led in ethyl alcohol or in isopropyl alcohol at normal temperature for less one minute. suggest soldering pad dimensions package dimensions of tape and reel notes: 1. all dimensions are in millimeters (inches). part no. : ltst - c21krkt - 2a page : 7 of 11 bns - od - c131/a4
lite - on technology corporation p r o p e r t y o f l i t e - o n o n l y notes: 1. empty component pockets sealed with top cover tape. 2. 7 inch reel - 3000 pieces per reel. 3. minimum packing quantity is 500 pcs for remainders. 4. the maximum number of consecuti ve missing lamps is two. 5. in accordance with ansi/eia 481 - 1 - a - 1994 specifications. part no. : ltst - c21krkt - 2a page : 8 of 11 bns - od - c131/a4
lite - on technology corporation p r o p e r t y o f l i t e - o n o n l y part no. : ltst - c21krkt - 2a page : 9 of 11 bns - od - c131/a4 cautions 1. application the leds described here are intended to be used for ordinary electronic equipment (such as office equipment, communication equipment and household applications).consult liteons sales in advance 2. storage the storage ambient for the leds should not exceed 30c temperature or 70% relative humidity. it is recommended that leds out of their original packaging are ir - reflowed within one week. for extended storage out of their original packaging, it is recommended that the leds be stored in a sealed container with appropriate desiccant, or in a desiccators with nitrogen ambient. leds stored out of their original packaging for more than a week should be baked at abo ut 60 deg c for at least 24 hours before solder assembly. 3. cleaning use alcohol - based cleaning solvents such as isopropyl alcohol to clean the led if necessary. 4. soldering recommended soldering conditions: reflow soldering wave soldering soldering ir on pre - heat pre - heat time peak temperature soldering time 120~150c 120 sec. max. 2 6 0c max. 5 sec. max. pre - heat pre - heat time solder wave soldering time 100c max. 60 sec. max. 260c max. 10 sec. max. temperature soldering time 300c max. 3 sec. max. (o ne time only) 5. drive method an led is a current - operated device. in order to ensure intensity uniformity on multiple leds connected in parallel in an application, it is recommended that a current limiting resistor be incorporated in the drive circuit, in series with each led as shown in circuit a below. circuit model a circuit model b (a) recommended circuit. (b) the brightness of each led might appear different due to the differences in the i - v characteristics of those leds. 6. esd (electrostatic discharge) static electricity or power surge will damage the led. suggestions to prevent esd damage: ? use of a conductive wrist band or anti - electrostatic g love when handling these leds. ? all devices, equipment, and machinery must be properly grounded. ? work tables, storage racks, etc. should be properly grounded. ? use ion blower to neutralize the static charge which might have built up on surface of the leds led led
lite - on technology corporation p r o p e r t y o f l i t e - o n o n l y part no. : ltst - c21krkt - 2a page : 10 of 11 bns - od - c131/a4 esd - damag ed leds will exhibit abnormal characteristics such as high reverse leakage current, low forward voltage, or no lightup at low currents. to verify for esd damage, check for lightup and vf of the suspect leds at low currents. the vf of good leds should be >2.0v@0.1ma for ingan product and >1.4v@0.1ma for alingap product. 7. reliability test classification test item test condition reference standard endurance test operation life ta= under room temperature as per data sheet maximum rating * tes t time= 1000hrs ( - 24hrs,+72hrs) *@20ma. mil - std - 750d:1026 mil - std - 883d:1005 j is c 7021:b - 1 high temperature high humidity storage ir - reflow in - board, 2 times ta= 655 ,rh= 90 95% * test time= 24 0 hrs2hrs mil - std - 202f:103b jis c 7021:b - 11 high temperat ure storage ta= 1055 * test time= 1000hrs ( - 24hrs,+72hrs) mil - std - 883d:1008 jis c 7021:b - 10 low temperature storage ta= - 555 * test time=1000hrs ( - 24hrs,+72h rs) jis c 7021:b - 12 environmental test temperature cycling 105 25 - 55 25 30mins 5mins 30mins 5mins 10 cycles mil - std - 202f:107d mil - std - 750d:1051 mil - std - 883d:1010 jis c 7021:a - 4 thermal shock ir - reflow in - board, 2 times 8 5 5 - 40 5 10mins 10mins 10 cycles mil - std - 202f :107d mil - std - 750d:1051 mil - std - 883d:1011 so lder resistance t.sol= 260 5 dwell time= 10 1secs mil - std - 202f:210a mil - std - 750d:2031 jis c 7021:a - 1 ir - reflow normal process ramp - up rate(183 to peak) +3 / second max temp. maintain at 125(25) 120 seconds max temp. maintain above 183 60 - 150 se conds peak temperature range 235 +5/ - 0 time within 5c of actual peak temperature (tp) 10 - 30 seconds ramp - down rate +6 /second max mil - std - 750d:2031.2 j - std - 020 c ir - reflow pb free process ramp - up rate(217 to peak) +3 / second max temp. maintain at 175( 25) 180 seconds max temp. maintain above 217 60 - 150 seconds peak temperature range 260 +0/ - 5 time within 5c of actual peak temperature (tp) 20 - 40 seconds ramp - down rate +6 /second max mil - std - 750d:2031.2 j - std - 020 c solderability t.sol= 235 5 imme rsion time 20.5 sec immersion rate 252.5 mm/sec coverage R 95% of the dipped surface mil - std - 202f:208d mil - std - 750d:2026 mil - std - 883d:2003 iec 68 part 2 - 20 jis c 7021:a - 2 8. others the appearance and specifications of the product may be modified for improvement without prior notice.
lite - on technology corporation p r o p e r t y o f l i t e - o n o n l y 9. suggested c hecking l ist training and certification 1. everyone working in a static - safe area is esd - certified? 2. training records kept and re - certification dates monitored ? static - safe workstation & work areas 1. static - safe workstation or work - areas have esd signs? 2. all surfaces and objects at all static - safe workstation and within 1 ft measure less than 100v? 3. all ionizer activated, positioned towards the unit s? 4. each work surface mats grounding is good? personnel grounding 1. every person (including visitors) handling esd sensitive (esds) items wears wrist strap, heel strap or conductive shoes with conductive flooring? 2. if conductive footwear used, conduct ive flooring also present where operator stand or walk? 3. garments, hairs or anything closer than 1 ft to esd items measure less than 100v*? 4. every wrist strap or heel strap/conductive shoes checked daily and result recorded for all dls? 5. all wrist st rap or heel strap checkers calibration up to date? note: *50v for blue led. device handling 1. every esds items identified by eia - 471 labels on item or packaging? 2. all esds items completely inside properly closed static - shielding containers when not at static - safe workstation? 3. no static charge generators (e.g. plastics) inside shielding containers with esds items? 4. all flexible conductive and dissipative package materials inspected before reuse or recycles? others 1. audit result reported to entity esd control coordinator? 2. corrective action from previous audits completed? 3. are audit records complete and on file? part no. : ltst - c21krkt - 2a page : 11 of 11 bns - od - c131/a4

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