LTST-T670KSL Lite-On Electronics, LTST-T670KSL Datasheet - Page 25

• Manufacturer Part Number: LTST-T670KSL
• Description: Standard LED - SMD Yellow Clear 587nm
• Manufacturer: Lite-On Electronics

Specifications of LTST-T670KSL

• Led Size: 3.2 mm x 2.7 mm
• Illumination Color: Yellow
• Lens Color/style: Water Clear
• Operating Voltage: 2 V
• Wavelength: 589 nm
• Luminous Intensity: 224 mcd
• Mounting Style: SMD/SMT
• Operating Current: 20 mA
• Lens Shape: Flat Round
• Maximum Operating Temperature: + 100 C
• Minimum Operating Temperature: - 55 C
• Peak Wavelength: 591 nm
• Package / Case: PLCC-2
• Viewing Angle: 120 deg
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

046
CAUTIONS for SMD LED
1. Application
2. Storage
3. Cleaning
4. Soldering
5. Drive Method
6. ESD (Electrostatic Discharge)
Pre-Haet
Pre-heat time
Peak temperature
Soldering time
Suggestions to prevent ESD damage:
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).
The storage ambient for the LEDs should not exceed 30ºC 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 desiccator 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.
Use alcohol-based cleaning solvents such as isopropyl alcohol to clean the LED if necessary
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.
Static Electricity or power surge will damage the LED.
 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 the LED's plastic lens as a result of friction
IR Reflow Soldering
120~150ºC
120 sec. Max.
240ºC Max.
10 sec. Max.
Pre-heat
Pre-heat time
Solder wave
Soldering time
Wave soldering
100ºC Max.
60 sec. Max.
260ºC Max.
10 sec. Max.
Temperature
Soldering time
Soldering iron
300ºC Max.
3 sec. Max.
(one time only)