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a ll data sheet.com 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-S271KFKT spec no.: ds22-2011-0740effective date: 05/19/2012revision: - bns-od-fc001/a4 bns-od-fc001/a4 bns-od-fc001/a4 bns-od-fc001/a4
a ll data sheet.com lite - on technology corporation alex chu 2011/10/6 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 . * side looking chip led with tin plating * 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 infrared reflow solder process package dimensions part no. lens source color ltst - S271KFKT water clear allngap orange notes: 1. all dimensions are in millimeters (inches). 2. tolerance is 0.10 mm (.004") unless otherwise noted. part no. : ltst - S271KFKT page : 1 of 1 2 bns - od - c131/a4
a ll data sheet.com lite - on technology corporation alex chu 2011/10/6 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 - S271KFKT unit power dissipation 75 mw peak forward current (1/10 duty cy cle, 0.1ms pulse width) 80 ma dc f orward c urrent 30 ma reverse voltage 5 v operating temperature range - 30 c to + 85 c storage temperature range - 40 c to + 85 c infrared soldering condition 260 c for 10 seconds part no. : ltst - S271KFKT page : 2 of 1 2 bns - od - c131/a4
a ll data sheet.com lite - on technology corporation alex chu 2011/10/6 p r o p e r t y o f l i t e - o n o n l y suggest ion profile: suggest ion ir reflow profile for pb free process part no. : ltst - S271KFKT page : 3 of 1 2 bns - od - c131/a4
a ll data sheet.com lite - on technology corporation alex chu 2011/10/6 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. unit test condition luminous intensity iv S271KFKT 45 .0 9 0.0 mcd if = 20ma note 1 viewing angle 2 1/2 S271KFKT 130 deg note 2 (fig.6) p eak emission wavelength p S271KFKT 611 nm measurement @peak (fig.1) dominant wavelength d S271KFKT 605 nm if = 20ma note 3 spectral line half - width ? s271kfk t 17 nm forward voltage vf S271KFKT 2.0 2.4 v if = 20ma reverse current ir S271KFKT 10 a vr = 5v notes: 1. luminous intensity is measured with a light sensor and filter combinatio n 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 from the cie chromaticity diagram and repr esents the single wavelength which defines the color of the device. 4. caution in esd: static electricity and surge damages the led. it is recommend to use a wrist band or anti - electrostatic glove when handling the led. all devices , equipment and machinery must be properly grounded. part no. : ltst - S271KFKT page : 4 of 1 2 bns - od - c131/a4
a ll data sheet.com lite - on technology corporation alex chu 2011/10/6 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 - S271KFKT page : 5 of 1 2 bns - od - c131/a4 luminous intensity un it : mcd @20ma bin code min. max. p 45.0 71.0 q 71.0 112.0 r 112.0 180.0 s 1 80 .0 2 80.0 tolerance on each intensity bin is +/ - 15%
a ll data sheet.com lite - on technology corporation alex chu 2011/10/6 p r o p e r t y o f l i t e - o n o n l y typical electric al / optical characteristics curves (25 ? c ambient temperature unless otherwise noted) part no. : ltst - S271KFKT page : 6 of 1 2 bns - od - c131/a4
a ll data sheet.com lite - on technology corporation alex chu 2011/10/6 p r o p e r t y o f l i t e - o n o n l y cleaning do not use unspecified chemical liquid to clean led they could ha rm 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 dimens ions suggest soldering direction: package dimensions of tape and reel notes: 1. all dimensions are in millimeters (inches). part no. : ltst - S271KFKT page : 7 of 1 2 bns - od - c131/a4
a ll data sheet.com lite - on technology corporation alex chu 2011/10/6 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 - 4 000 pieces per reel. 3. minimum packing quantity is 500 pcs for remainders. 4. the maximum number of consecutive missing lamps is two. 5. in accordance with ansi/eia 481 specifications. part no. : ltst - S271KFKT page : 8 of 1 2 bns - od - c131/a4
a ll data sheet.com lite - on technology corporation alex chu 2011/10/6 p r o p e r t y o f l i t e - o n o n l y part no. : ltst - S271KFKT page : 9 of 1 2 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 sale 2. storage the package is sealed: the leds should be stored at 30c or less and 90%rh or less. and the leds are limited to use within one year, wh ile the leds is packed in moisture - proof package with the desiccants inside. the package is opened: the storage ambient for the leds should not exceed 30c temperature or 6 0% relative humidity. it is recommended that leds out of their original packaging ar e 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 p ackaging for more than a week should be baked at about 60 deg c for at least 2 0 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 con ditions: reflow soldering soldering iron pre - heat pre - heat time peak temperature soldering time 1 50 ~ 200 c 120 sec. max. 2 6 0c max. 10 sec. max. (max. two times) temperature soldering time 300c max. 3 sec. max. (one time only) s oldering notes: because d ifferent board designs use different number and types of devices, solder pastes, reflow ovens, and circuit boards, no single temperature profile works for all possible combinations. however, you can successfully mount your packages to the pcb by following the proper guidelines and pcb - specific characterization . lite - on runs both component - level verification using in - house kyramx98 reflow chambers and board - level assembly. the results of this testing are verified through post - reflow reliability testing. pro files used at lite - on are based on jedec standards to ensure that all packages can be successfully and reliably surface mounted. figure on page3 shows a sample temperature profile compliant to jedec standards. you can use this example as a generic target to set up your reflow process. you should adhere to the jedec profile limits as well as specifications and recommendations from the solder paste manufacturer to avoid damaging the device and create a reliable solder joint.
a ll data sheet.com lite - on technology corporation alex chu 2011/10/6 p r o p e r t y o f l i t e - o n o n l y part no. : ltst - S271KFKT page : 10 of 1 2 bns - od - c131/a4 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 elec tricity or power surge will damage the led. suggestions to prevent esd damage: ? use of a conductive wrist band or anti - electrostatic glove when handling these leds. ? all devices, equipment, and machinery must be properly grounded. ? work tables, storage rack s, etc. should be properly grounded. ? use ion blower to neutralize the static charge which might have built up on surface of the leds esd - damaged leds will exhibit abnormal ch aracteristics 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. led led
a ll data sheet.com lite - on technology corporation alex chu 2011/10/6 p r o p e r t y o f l i t e - o n o n l y 7. reliability test classification test item test condition reference standard endurance test operation life ta= under room temperature as per data sheet maximum rating * test time= 1000hrs ( - 24hrs,+72hrs) mil - std - 750d:1 026 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 temperature 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 solder resistance t.sol= 260 5 dwell time= 10 1sec s mil - std - 202f:210a mil - std - 750d:2031 jis c 7021:a - 1 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) 10~30 seconds ramp - down rate +6 /second max mil - std - 750d:2031.2 j - std - 020 d solderability t.sol= 235 5 immersion 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. part no. : ltst - S271KFKT page : 11 of 1 2 bns - od - c131/ a4
a ll data sheet.com lite - on technology corporation alex chu 2011/10/6 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 o r 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 units? 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, conductive flooring also present where operator stand or walk? 3. garments, h airs 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 strap 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 co mpleted? 3. are audit records complete and on file? part no. : ltst - S271KFKT page : 1 2 of 1 2 bns - od - c131/a4

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