LITE-ON
Features
TECHNOLOGY
CORPORATION
Property of Lite-On Only * Meet ROHS, Green Product. * Side looking special for LCD backlight. * Package in 8mm tape on 7" diameter reels. * Compatible with automatic placement equipment. * Compatible with infrared and vapor phase reflow and wave solder process. * EIA STD package. * I.C. compatible. Package Dimensions
Part No. LTW-270TLA
Notes: 1. All dimensions are in millimeters (inches).
Lens Yellow
Emitted Color InGaN White
2. Tolerance is ± 0.10 mm (.004") unless otherwise noted.
Part
No. : LTW-270TLA
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LITE-ON
Absolute Maximum Ratings At
TECHNOLOGY
Ta=25℃
CORPORATION
Property of Lite-On Only
Parameter
Power Dissipation Peak Forward Current (1/10 Duty Cycle, 0.1ms Pulse Width) DC Forward Current Derating Linear From 25°C Reverse Voltage Operating Temperature Range Storage Temperature Range Soldering Temperature Suggest IR Reflow Condition :
LTW-270TLA
70 100 20 0.25 5 -20°C to + 80°C -55°C to + 105°C 260°C For 5 Seconds
Unit
mW mA mA mA/°C V
R e c o m m e n d e d P r o file B e t w e e n A s s e m b le A n d H e a t -R e s is t a n c e L in e
T h e P r o file is a v a ila b le t h a t m u s t to u s e S n A g
Cu
s o ld e r p a s t e
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LITE-ON
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Property of Lite-On Only Electrical Optical Characteristics At Ta=25℃
Parameter
Symbol
Part No.
LTW-
Min.
Typ.
Max.
Unit
Test Condition
IF = 10mA Note 1, 2, 5
Luminous Intensity
IV
270TLA
45
180
mcd
Viewing Angle
2θ1/2 x
270TLA
130 0.31
deg
Fig.6 IF = 10mA Note 3, 5 Fig.1
Chromaticity Coordinates y Forward Voltage VF
270TLA 0.32 270TLA 2.8 3.4 V
IF = 10mA
Reverse Current
IR
270TLA
10
µA
VR = 5V
Note : 1. Luminous intensity is measured with a light sensor and filter combination that approximates the CIE eye-response curve. 2. Iv classification code is marked on each packing bag. 3. The chromaticity coordinates (x, y) is derived from the 1931 CIE chromaticity diagram. 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. 5. Tester CAS140B is for the chromaticity coordinates (x, y) & IV. 6. The chromaticity coordinates (x, y) guarantee should be added ± 0.01 tolerance.
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LITE-ON
TECHNOLOGY
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Property of Lite-On Only
Typical (25℃
Electrical Ambient
/
Optical
Characteristics Unless Otherwise
Curves Noted)
Temperature
Part
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LITE-ON
Bin Code List
VF Bin 2 3 4
TECHNOLOGY
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Property of Lite-On Only
VF Spec. Table Forward Voltage (V) at IF = 10mA Min. 2.80 3.00 3.20 Max. 3.00 3.20 3.40
Tolerance on each Forward Voltage bin is +/-0.1 volt IV Spec. Table IV Bin P Q R
Luminous Intensity (mcd) at IF = 10mA
Min. 45.0 71.0 112.0 Max. 71.0 112.0 180.0
Tolerance on each Luminous Intensity bin is +/- 15%. Hue Spec. Table Color bin limits at IF = 10mA CIE 1931Chromaticity coordinates X y x y x y X y X y x y 0.280 0.248 0.287 0.295 0.307 0.315 0.296 0.276 0.311 0.294 0.330 0.318 0.296 0.276 0.307 0.315 0.330 0.339 0.311 0.294 0.330 0.318 0.356 0.351 0.283 0.305 0.304 0.330 0.330 0.360 0.307 0.315 0.330 0.339 0.361 0.385 0.264 0.267 0.283 0.305 0.304 0.330 0.287 0.295 0.307 0.315 0.330 0.360
Hue Bin A0 B3 B4 B5 B6 C0
Tolerance on each Hue (x, y) bin is +/- 0.01.
0.4 C. I. E. 1931 Chromaticity Diagram
0.35 Y-coordinate
B4 B3 B5 A0 B6
C0
0.3
0.25
0.2 0.25
0.27
0.29
0.31 X-coordinate
0.33
0.35
0.37
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LITE-ON
TECHNOLOGY
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Property of Lite-On Only Cleaning 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).
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Property of Lite-On Only
P ackage Dimensions of Reel
Notes: 1. Empty component pockets sealed with top cover tape. 2. 7 inch reel-4000 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 481-1-A-1994 specifications.
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LITE-ON
TECHNOLOGY
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Property of Lite-On Only
Notes: 1. There are 3 moisture barrier bags or less in inner carton. 2. There are 21 inner carton or less in a master carton.
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LITE-ON
TECHNOLOGY
CAUTIONS
CORPORATION
Property of Lite-On Only 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 Liteon’s Sales in advance for information on applications in which exceptional reliability is required, particularly when the failure or malfunction of the LEDs may directly jeopardize life or health (such as in aviation, transportation, traffic control equipment, medical and life support systems and safety devices). 2. Storage The storage ambient for the LEDs should not exceed 30°C 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 about 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
Pre-heat Pre-heat time Peak temperature Soldering time 120~150°C 120 sec. Max. 240°C Max. 10 sec. Max.
Wave Soldering
100°C Max. 60 sec. Max. 260°C Max. 10 sec. Max.
Soldering iron
Temperature Soldering time 300°C Max. 3 sec. Max. (one time only)
Pre-heat Pre-heat time Solder wave Soldering time
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
LED
Circuit model B
LED
(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 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 the LED’s plastic lens as a result of friction between LEDs during storage and handling. Part No. : LTW-270TLA Page : 9 of 11
BNS-OD-C131/A4
LITE-ON
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Property of Lite-On Only
ESD-damaged 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 Operation Life High Temperature High Humidity Storage High Temperature Storage Low Temperature Storage Temperature Cycling
Test Condition
Ta= Under Room Temperature As Per Data Sheet Maximum Rating *Test Time= 1000HRS (-24HRS,+72HRS)*@20mA. IR-Reflow In-Board, 2 Times Ta= 65±5℃,RH= 90~95% *Test Time= 240HRS±2HRS Ta= 105±5℃ *Test Time= 1000HRS (-24HRS,+72HRS) Ta= -55±5℃ *Test Time=1000HRS (-24HRS,+72H RS) 105℃ ~ 25℃ ~ -55℃ ~ 25℃ 30mins 5mins 30mins 5mins 10 Cycles IR-Reflow In-Board, 2 Times 85 ± 5℃ ~ -40℃ ± 5℃ 10mins 10mins 10 Cycles T.sol= 260 ± 5℃ Dwell Time= 10 ± 1secs Ramp-up rate(183℃ to Peak) +3℃/ second max Temp. maintain at 125(±25)℃ 120 seconds max Temp. maintain above 183℃ 60-150 seconds Peak temperature range 235℃+5/-0℃ Time within 5°C of actual Peak Temperature (tp) 10-30 seconds Ramp-down rate +6℃/second max 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 5°C of actual Peak Temperature (tp) 20-40 seconds Ramp-down rate +6℃/second max T.sol= 235 ± 5℃ Immersion time 2±0.5 sec Immersion rate 25±2.5 mm/sec Coverage ≧95% of the dipped surface
Reference Standard
MIL-STD-750D:1026 MIL-STD-883D:1005 JIS C 7021:B-1 MIL-STD-202F:103B JIS C 7021:B-11 MIL-STD-883D:1008 JIS C 7021:B-10 JIS C 7021:B-12 MIL-STD-202F:107D MIL-STD-750D:1051 MIL-STD-883D:1010 JIS C 7021:A-4 MIL-STD-202F:107D MIL-STD-750D:1051 MIL-STD-883D:1011 MIL-STD-202F:210A MIL-STD-750D:2031 JIS C 7021:A-1 MIL-STD-750D:2031.2 J-STD-020C
Endurance Test
Thermal Shock Solder Resistance
Environmental Test
IR-Reflow Normal Process
MIL-STD-750D:2031.2 J-STD-020C
IR-Reflow Pb Free Process
Solderability
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. : LTW-270TLA Page : 10 of 11
BNS-OD-C131/A4
LITE-ON
TECHNOLOGY
CORPORATION
Property of Lite-On Only 9. 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 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, 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 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 completed? 3. Are audit records complete and on file?
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