LTW-670DS Lite-On Electronics, LTW-670DS Datasheet - Page 9

• Manufacturer Part Number: LTW-670DS
• Description: LED WHITE YELLOW LENS PLCC SMD
• Manufacturer: Lite-On Electronics

Specifications of LTW-670DS

• Led Size: 3.2 mm x 2.7 mm
• Illumination Color: White
• Operating Voltage: 3.5 V
• Luminous Intensity: 280 mcd to 1120 mcd
• Mounting Style: SMD/SMT
• Operating Current: 20 mA
• Lens Shape: Flat Round
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 30 C
• Package / Case: 2-PLCC
• Viewing Angle: 120°
• Color: White
• Millicandela Rating: 700mcd
• Current - Test: 20mA
• Wavelength - Dominant: 7000K
• Voltage - Forward (vf) Typ: 3.5V
• Lens Type: Diffused, Yellow Tinted
• Lens Style/size: Round, 2.2mm
• Size / Dimension: 3.50mm L x 2.70mm W
• Height: 1.95mm
• Mounting Type: Surface Mount
• Resistance Tolerance: 7000K
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Luminous Flux @ Current - Test: -
• Wavelength - Peak: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 160-1725-2

BNS-OD-C131/A4
1. Application
2. Storage
3. Cleaning
4. Soldering
5. Drive Method
6. ESD (Electrostatic Discharge)
Part No. : LTW-670DS
Static Electricity or power surge will damage the LED.
Suggestions to prevent ESD damage:
(A) Recommended circuit.
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 85°C temperature or 60% 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 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.
Use alcohol-based cleaning solvents such as isopropyl alcohol to clean the LED if necessary.
Recommended soldering conditions:
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.
(B) The brightness of each LED might appear different due to the differences in the I-V characteristics of
Reflow soldering
Pre-heat
Pre-heat time
Soldering
Soldering time
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.
those LEDs.
Temp.
Circuit model A
120~150°C
120 sec. Max.
260°C Max.
30 sec. Max.
LED
LITE-ON TECHNOLOGY CORPORATION
P r o p e r t y o f L i t e - O n O n l y
Wave Soldering
Pre-heat
Pre-heat time
Solder wave
Soldering time
CAUTIONS
100°C Max.
60 sec. Max.
260°C Max.
10 sec. Max.
Circuit model B
LED
Soldering iron
Temperature
Soldering time
Page :
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300°C Max.
3 sec. Max.
(one time only)
of
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