SMD LED Product Data Sheet LTST-T680QSWT Spec No.: DS22-2014-0021 Effective Date: 09/26/2014 Revision: A LITE-ON DCC RELEASE BNS-OD-FC001/A4 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 LED LTST-T680QSWT 1. Description SMD LEDs from Lite-On are available in miniature sizes and special configurations for automated PC board assembly and space-sensitive applications. These SMD LEDs are suitable for use in a wide variety of electronic equipment, including cordless and cellular phones, notebook computers, network systems, home appliances, and indoor signboard applications. . 1.1 Features 1.2 Applications Meet ROHS 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 Preconditioning: accelerate to JEDEC level 3 Telecommunication, Office automation, home appliances, industrial equipment Status indicator Signal and Symbol Luminary Front panel backlighting 2. Package Dimensions Part No. Lens Color Source Color LTST-T680QSWT Diffused AlInGaP Yellow Notes: 1. 2. All dimensions are in millimeters. Tolerance is ±0.2 mm (.008") unless otherwise noted. 1/11 Part No. : LTST-T680QSWT BNS-OD-FC002/A4 SMD LED LTST-T680QSWT 3. Rating and Characteristics 3.1 Absolute Maximum Ratings at Ta=25°C LTST-T680QSWT Unit 120 mW 100 mA DC Forward Current 50 mA Reverse Voltage 5 V Operating Temperature Range -40°C to + 85°C Storage Temperature Range -40°C to + 100°C Parameter Power Dissipation Peak Forward Current (1/10 Duty Cycle, 0.1ms Pulse Width) 3.2 Suggest IR Reflow Condition for Pb Free Process: IR-Reflow Soldering Profile for lead free soldering (Acc. to J-STD-020B) 2/11 Part No. : LTST-T680QSWT BNS-OD-FC002/A4 SMD LED LTST-T680QSWT 3.3 Electrical / Optical Characteristics at Ta=25°C Part No. Parameter Symbol Min. Typ. Max. Unit Test Condition LTSTIV T680QSWT 450.0 - 1120.0 mcd IF = 20mA Note 1 21/2 T680QSWT - 120 - deg Note 2 (Fig.5) Peak Emission Wavelength P T680QSWT - 592 - nm Measurement @Peak (Fig.1) Dominant Wavelength d T680QSWT 584.5 - 594.5 nm IF = 20mA Note 3 Spectral Line Half-Width T680QSWT - 15 - nm Forward Voltage VF T680QSWT - 2.1 2.4 V IF = 20mA Reverse Current IR T680QSWT - - 10 μA VR = 5V Luminous Intensity Viewing Angle Notes: 1. Luminous intensity is measured with a light sensor and filter combination that approximates the CIE eye-response curve 2. θ1/2 is the off-axis angle at which the luminous intensity is half the axial luminous intensity. 3. The dominant wavelength, λd is derived from the CIE chromaticity diagram and represents the single wavelength which defines the color of the device. 3/11 Part No. : LTST-T680QSWT BNS-OD-FC002/A4 SMD LED LTST-T680QSWT 4. Bin Rank Vf Rank Forward Voltage Bin Code Unit: V @20mA Min. Max. D2 1.8 2.0 D3 2.0 2.2 D4 2.2 2.4 Tolerance on each Forward Voltage bin is +/-0.1 volt IV Rank Luminous Intensity Unit : mcd @20mA Bin Code Min. Max. U1 450.0 560.0 U2 560.0 710.0 V1 710.0 900.0 V2 900.0 1120.0 Tolerance on each Intensity bin is +/-11% Wd Rank Dominant Wavelength Unit : nm @20mA Bin Code Min. Max. H 584.5 587.0 J 587.0 589.5 K 589.5 592.0 L 592.0 594.5 Tolerance for each Dominate Wavelength bin is +/- 1nm 4/11 Part No. : LTST-T680QSWT BNS-OD-FC002/A4 SMD LED LTST-T680QSWT 5. Typical Electrical / Optical Characteristics Curves. (25°C Ambient Temperature Unless Otherwise Noted) 5/11 Part No. : LTST-T680QSWT BNS-OD-FC002/A4 SMD LED LTST-T680QSWT 6. User Guide 6.1 Cleaning Do not use unspecified chemical liquid to clean LED they could harm the package. If cleaning is necessary, immerse the LED in ethyl alcohol or isopropyl alcohol at normal temperature for less one minute. 6.2 Recommend Printed Circuit Board Attachment Pad Infrared / vapor phase Reflow Soldering 6.3 Package Dimensions of Tape And Reel Note: 1. All dimensions are in millimeters (inches). 6/11 Part No. : LTST-T680QSWT BNS-OD-FC002/A4 SMD LED LTST-T680QSWT 6.4 Package Dimensions of Reel Notes: 1. Empty component pockets sealed with top cover tape. 2. 7 inch reel 2000 pieces per reel. 3. The maximum number of consecutive missing lamps is two. 4. In accordance with ANSI/EIA 481 specifications. 7/11 Part No. : LTST-T680QSWT BNS-OD-FC002/A4 SMD LED LTST-T680QSWT 7. Cautions 7.1 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). 7.2 Storage The package is sealed: The LEDs should be stored at 30°C or less and 70%RH or less. And the LEDs are limited to use within one year, while 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 30°C temperature and 60% relative humidity. It is recommended that LEDs out of their original packaging are IR-reflowed within 168hrs. 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 168hrs should be baked at about 60 °C for at least 48 hours before solder assembly. 7.3 Cleaning Use alcohol-based cleaning solvents such as isopropyl alcohol to clean the LED if necessary. 7.4 Soldering Recommended soldering conditions: Reflow soldering Pre-heat Pre-heat time Peak temperature Soldering time 150~200°C 120 sec. Max. 260°C Max. 10 sec. Max.(Max. two times) Soldering iron Temperature Soldering time 300°C Max. 3 sec. Max. (one time only) Notes: Because different 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.Profiles 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. 8/11 Part No. : LTST-T680QSWT BNS-OD-FC002/A4 SMD LED LTST-T680QSWT 7.5 Drive Method A 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. 7.6 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. 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 >[email protected] for InGaN product and >[email protected] for AlInGaP product. 9/11 Part No. : LTST-T680QSWT BNS-OD-FC002/A4 SMD LED LTST-T680QSWT 8. Reliability Test No. Test item 1 Resistance to soldering heat 2 Solderability Test condition Reference standard Tsld = 260°C, 10sec. 3 times JEITA ED-4701 300 301 Tsld=245± 5°C (Lead Free Solder, Coverage ≧ 95% of the JEITA ED-4701 300 303 dipped surface) 3 Thermal Shock 85 ± 5°C ~ -30°C ± 5°C 30min 30min 100cycles JEITA ED-4701 300 307 4 Temperature Cycle -55°C ~ 25°C ~ 100°C ~ 25°C 30min 5min 30min 5min 100cycles JEITA ED-4701 100 105 5 High Temperature Storage 100°C 1000hrs JEITA ED-4701 200 201 6 Low Temperature Storage -55°C 1000hrs JEITA ED-4701 200 202 7 Temperature Humidity Storage 60°C/90%RH 300hrs 8 Room temp life test 25°C, IF: Max current , 1000hrs JEITA ED-4701 100 103 -- 9. Others The appearance and specifications of the product may be modified for improvement without prior notice. 10/11 Part No. : LTST-T680QSWT BNS-OD-FC002/A4 SMD LED LTST-T680QSWT 10. 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 InGaN 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? 11/11 Part No. : LTST-T680QSWT BNS-OD-FC002/A4