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 * lead (pb) free product C rohs compliant. * low power consumption. * high efficiency. * versatile mounting on p.c. board or panel. * i.c. compatible/low current requirement. * popular t-1 3/4 diameter. package dimensions part no. lens color emitted color LTW-2S3D8-1 water clear ingan white notes: 1. all dimensions are in millimeters (inches). 2. tolerance is 0.25mm(.010") unless otherwise noted. 3. protruded resin under flange is 1.0mm(.04") max. 4. lead spacing is measured where the leads emerge from the package. 5. specifications are subject to change without notice. part no. : LTW-2S3D8-1 page : 1 of 9 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 t a =25 parameter maximum rating unit power dissipation 120 mw peak forward current (1/10 duty cycle, 0.1ms pulse width) 100 ma dc forward current 30 ma reverse voltage 5 v operating temperature range -30 to + 80 storage temperature range -40 to + 100 lead soldering temperature [2.0mm(.08") from body] 260 for 5 seconds part no. : LTW-2S3D8-1 page : 2 of 9 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 electrical / optical characteristics at ta=25 parameter symbol min. typ. max. unit test condition luminous intensity iv 13000 (17000) mcd i f = 20ma note 1,2,3 iv spec. table viewing angle 2 1/2 15 deg note 4 x 0.30 chromaticity coordinates y 0.30 i f = 20ma note 5 hue spec. table & chromaticity diagram forward voltage v f 3.1 - 3.4 v i f = 20ma reverse current i r 50 a v r = 5v note: 1. luminous intensity is measured with a light sensor and filter combination tha t approximates the cie eye-response curve. 2. the iv guarantee should be added 15 tolerance. 3. iv classification code is marked on each packing bag. 4. 1/2 is the off-axis angle at which the luminous intensity is half the axial luminous intens ity. 5. the chromaticity coordinates (x, y) is derived from the 1931 cie chromaticity diagr am. 6. precautions in handling: ? when soldering, leave 2mm of minimum clearance from the resin to the soldering point. ? dipping the resin to solder must be avoided. ? correcting the soldered position after soldering must be avoided. ? in soldering, do not apply any stress to the lead frame particularly when heated. ? lead forming must be done before soldering. ? it is necessary to cut the lead frame at normal temperature. 7. caution in esd: static electricity and surge damages the led. it is recommend to use a wris t band or anti-electrostatic glove when handling the led. all devices, equipment and machine ry must be properly grounded. part no. : LTW-2S3D8-1 page : 3 of 9 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 typical electrical / optical characteristics curves (25 ambient temperature unless otherwise noted) forward current vs. chromaticity coordinate spectrum forward voltage vs. forward current ambient temperature vs. forward current forward current vs. relative luminous intensity ambient temperature vs. relative luminous intensity directivity part no. : LTW-2S3D8-1 page : 4 of 9 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 packing spec 500 or 250 pcs per packing bag 10 packing bags per inner carton total 5,000 pcs per inner carton 8 inner cartons per outer carton total 40,000 pcs per outer carton part no. : LTW-2S3D8-1 page : 5 of 9 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 iv spec. table for reference luminous intensity (mcd) , if = 20ma iv bin min. max. z1 13000 17000 z2 17000 22000 z3 22000 29000 luminous intensity measurement allowance is 15% vf spec. table for reference forward voltage (v) , if = 20ma vf bin min. max. 3f 3.10 3.20 4f 3.20 3.30 5f 3.30 3.40 forward voltage measurement allowance is 0.1 part no. : LTW-2S3D8-1 page : 6 of 9 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 hue spec. table for reference hue bin chromaticity coordinates (if=20ma) cct x 0.330 0.330 0.361 0.354 c0 y 0.307 0.360 0.385 0.334 4500k~5600k x 0.330 0.330 0.306 0.303 b4 y 0.360 0.339 0.317 0.328 5600k~7000k x 0.330 0.330 0.314 0.306 b6 y 0.339 0.307 0.285 0.317 5600k~7000k x 0.303 0.306 0.287 0.283 b3 y 0.328 0.317 0.295 0.305 7000~9000k x 0.306 0.314 0.301 0.287 b5 y 0.317 0.285 0.266 0.295 7000~9000k x 0.288 0.264 0.283 0.301 a0 y 0.238 0.267 0.305 0.266 9000~15000k color coordinates measurement allowance is 0.01 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 x y c0 b1 b2 a0 a1 black body radiation locus 0.20 0.25 0.30 0.35 0.40 0.2 0.3 0.4 x y c0 b1 b2 a0 a1 c0 b4 b6 b3 b5 a0 part no. : LTW-2S3D8-1 page : 7 of 9 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 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 for inf ormation on applications in which exceptional reliability is required, particularly when the f ailure or malfunction of the leds may directly jeopardize life or health (such as in aviation, transportati on, traffic control equipment, medical and life support systems and safety devices). 2. storage the storage ambient for the leds should not exceed 30c temperature or 70% relative humi dity. it is recommended that leds out of their original packaging are used within three months. 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 dessicator with nitrogen ambient. 3. cleaning use alcohol-based cleaning solvents such as isopropyl alcohol to clean the leds if nec essary. 4. lead forming & assembly during lead forming, the leads should be bent at a point at least 3mm from the base of led le ns. do not use the base of the leadframe as a fulcrum during forming. lead forming must be done before s oldering at normal temperature. during assembly on pcb, use minimum clinch force possible to avoid exces sive mechanical stress 5. soldering when soldering, leave a minimum of 2mm clearance from the base of the lens to the solder ing point. dipping the lens into the solder must be avoided. do not apply any external stress to the lead frame during soldering while the led is a t high temperature. recommended soldering condition: soldering iron wave soldering temperature soldering time 300c max. 3 sec. max. (one time only) pre-heat pre-heat time solder wave soldering time 100c max. 60 sec. max. 260c max. 5 sec. max. note: excessive soldering temperature and/or time might result in deformation of the led lens or catastro phic failure of the led. ir re-flow is not suitable process for through hole type led lamp pr oduction. 6. drive method an led is a current operated device, in order to ensure intensity uni formity on multiple leds connected in parallel in an application; it is recommended that a current limiting resistor be incorporat ed in the drive circuit. in series with each led as shown in circuit a below. circuit model a circuit model b led led part no. : LTW-2S3D8-1 page : 8 of 9 bns-od-c131/a4 (a) recommended circuit. (b) the brightness of each led might appear different due to the differences in the i-v characteristics of those leds
lite-on technology corporation p r o p e r t y o f l i t e - o n o n l y 7. esd (electrostatic discharge) static electricity or power surge will damage the led. suggestions to prevent esd damage. use a conductive wrist band or anti-electrostatic glove 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 t he led's plastic lens as a result of friction between leds during storage and handling. esd-damaged leds will exhibit abnormal characteristics such as high reve rse leakage current, low forward voltage, or no lightup at low currents. to verify for esd damage, check for light up and vf of the suspect leds at low currents. suggested checking list : 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 meas ure less than 100v? 3. all ionize 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 wea rs wrist strap, heel strap or conductive shoes with conductive flooring? 2. if conductive footwear used, conductive flooring also present where operator stand or wal k? 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 recor ded 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 containe rs when not at static-safe workstation? 3. no static charge generators (e.g. plastics) inside shielding containers wit h esds items? 4. all flexible conductive and dissipative package materials inspected before r euse 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? 8. others white led is materialized by combining blue led and phosphors. color of white led is chang ed a little by an operating current. the appearance and specifications of the product may be modified for improvement, without prior notice. part no. : LTW-2S3D8-1 page : 9 of 9 bns-od-c131/a4
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