LTST-T680KRKT Lite-On Electronics, LTST-T680KRKT Datasheet - Page 8

• Manufacturer Part Number: LTST-T680KRKT
• Description: Standard LED - SMD Red 631nm 140mcd 20mA
• Manufacturer: Lite-On Electronics

Specifications of LTST-T680KRKT

• Led Size: 3.5 mm
• Illumination Color: Red
• Lens Color/style: Water Clear
• Operating Voltage: 2 V
• Wavelength: 631 nm
• Luminous Intensity: 140 mcd
• Mounting Style: SMD/SMT
• Operating Current: 20 mA
• Lens Dimensions: 2.2 mm
• Lens Shape: Round
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Peak Wavelength: 639 nm
• Viewing Angle: 120 deg
• Color: Red
• Millicandela Rating: 147.5mcd
• Current - Test: 20mA
• Wavelength - Dominant: 631nm
• Wavelength - Peak: 639nm
• Voltage - Forward (vf) Typ: 2V
• Lens Type: Clear
• Lens Style/size: Round, 2.2mm
• Package / Case: 2-PLCC
• Size / Dimension: 3.50mm L x 2.80mm W
• Height: 1.90mm
• Mounting Type: Surface Mount
• Resistance Tolerance: 631nm
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Luminous Flux @ Current - Test: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 160-1847-2

BNS-OD-C131/A4
1. Application
2. Storage
3. Cleaning
4. Soldering
Part
Soldering notes:
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 deg C for
at least 48 hours before solder assembly.
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).
Use alcohol-based cleaning solvents such as isopropyl alcohol to clean the LED if necessary.
Recommended soldering conditions:
Pre-heat
Pre-heat time
Peak temperature
Soldering time
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
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.
No. : LTST-T680KRKT
Reflow soldering
150~200°C
120 sec. Max.
260°C Max.
10 sec. Max.(Max. two times)
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
Temperature
Soldering time
KYRAMX98
Soldering iron
Page :
300°C Max.
3 sec. Max.
(one time only)
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reflow chambers and
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