LITEON LTW

LITE-ON TECHNOLOGY CORPORATION
Property of Lite-On Only
Features
* Lead (Pb) free product - RoHS compliant
* Low power consumption.
* High efficiency & reliability.
* Versatile mounting on p.c. board or panel.
* I.C. compatible/low current requirement.
* Popular T-13/4 diameter.
Package Dimensions
Part No.
Lens Color
Emitted Color
LTW-488D3
Water Clear
InGaN White
NOTES:
1. All dimensions are in millimeters (inches).
2. Tolerance is ±0.25mm(.010") unless otherwise noted.
3. Protruded resin under Lens is 1.0mm (.04") max.
4. Lead spacing is measured where the leads emerge from the package.
5. Specifications are subject to change without notice.
PART NO.: LTW-488D3
BNS-OD-C131/A4
PAGE:
1
of
7
LITE-ON TECHNOLOGY CORPORATION
Property of Lite-On Only
Absolute Maximum Ratings at Ta=25ºC
PARAMETER
MAXIMUM RATING
UNIT
Power Dissipation
108
mW
Peak Forward Current
(1/10 Duty Cycle, 0.1ms Pulse Width)
40
mA
DC Forward Current
20
mA
Reverse Voltage
5
V
Operating Temperature Range
Storage Temperature Range
Lead Soldering Temperature
[2.0mm(.087") From Body]
PART NO.: LTW-488D3
BNS-OD-C131/A4
-30ºC to + 85 ºC
-40 ºC to + 100 ºC
260 ºC for 5 Seconds
PAGE:
2
of
7
LITE-ON TECHNOLOGY CORPORATION
Property of Lite-On Only
Electrical / Optical Characteristics at Ta=25 ºC
PARAMETER
SYMBOL
MIN.
TYP.
MAX.
UNIT
TEST CONDITION
Iv
-
180
-
mcd
IF = 20mA
Note 1,2,3
Iv Spec. Table
2θ1/2
-
130
-
deg
Note 4
x
-
0.25
-
IF = 20mA
Note 5
Hue Spec. Table &
y
-
0.21
-
Chromaticity Diagram
Forward Voltage
VF
2.7
-
3.8
V
IF = 20mA
Reverse Current
IR
-
-
50
μA
VR = 5V
Luminous Intensity
Viewing Angle
Chromaticity
Coordinates
NOTE:
1. Luminous intensity is measured with a light sensor and filter combination that approximates the
CIE eye-response curve.
2. The Iv guarantee should be added ±15% tolerance.
3. Iv classification code is marked on each packing bag.
4. θ1/2 is the off-axis angle at which the luminous intensity is half the axial luminous intensity.
5. The chromaticity coordinates (x, y) is derived from the 1931 CIE chromaticity diagram.
PART NO.: LTW-488D3
BNS-OD-C131/A4
PAGE:
3
of
7
LITE-ON TECHNOLOGY CORPORATION
Property of Lite-On Only
Typical Electrical / Optical Characteristics Curves
(25ºC Ambient Temperature Unless Otherwise Noted)
Spectrum
Forward Current vs. Chromaticity Coordinate
1.00
0.80
0.250
0.240
CCx/CCy
Relative Intensity
0.260
0.60
0.40
0.230
0.220
0.210
0.20
0.200
0.00
0
300
400
500
600
700
4
800
8
12
16
20
24
28
32
Driving Current(mA)
Wavelength(nm)
Ambient Temperature vs.
Forward Current
40
30
20
10
0
2.5
3
3.5
4
4.5
5
Forward Voltage Vf(V)
Forward Current vs.
Relative Luminous Intensity
25
2
Relative Intensity
Allowed Driving Current(mA)
Forward Current If(mA)
Forward Voltage vs.
Forward Current
20
15
10
5
1.5
1
0.5
0
0
0
20
40
60
80
0
100
40
60
Forward Current If(mA)
Ambient Temperature(°C)
Ambient Temperature vs.
Relative Luminous Intensity
Directivity
10
Relative Intensity
20
0°
-30°
1
-60°
0.1
-30 -20 -10 0 10 20 30 40 50 60 70 80 90
-90°
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
0°
30°
60°
90°
Ambient Temperature(°C)
PART NO.: LTW-488D3
BNS-OD-C131/A4
PAGE:
4
of
7
LITE-ON TECHNOLOGY CORPORATION
Property of Lite-On Only
Packing Specification
500 pcs per packing bag
10 packing bags per inner carton
Total 5,000 pcs per inner carton
8 Inner cartons per outer carton
Total 40,000 pcs per outer carton
PART NO.: LTW-488D3
BNS-OD-C131/A4
PAGE:
5
of
7
LITE-ON TECHNOLOGY CORPORATION
Property of Lite-On Only
CAUTIONS
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 used within three months.
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 dessicator with nitrogen ambient.
3. Cleaning
Use alcohol-based cleaning solvents such as isopropyl alcohol to clean the LEDs if necessary.
4. Lead Forming & Assembly
During lead forming, the leads should be bent at a point at least 3mm from the base of LED lens. Do
not use the base of the leadframe as a fulcrum during forming. Lead forming must be done before
soldering at normal temperature. During assembly on PCB, use minimum clinch force possible to
avoid excessive mechanical stress
5. Soldering
When soldering, leave a minimum of 3mm clearance from the base of the lens to the soldering point.
Dipping the lens into the solder must be avoided. Do not apply any external stress to the lead frame
during soldering while the LED is at high temperature.
Recommended soldering condition:
Soldering Iron
Wave Soldering
Temperature
300°C Max.
Pre-heat
100°C Max.
Soldering time
3 sec. Max.
Pre-heat time
60 sec. Max.
(one time only)
Solder wave
260°C Max.
Soldering time
5 sec. Max.
Note: Excessive soldering temperature and/or time might result in deformation of the LED lens or
catastrophic failure of the LED. IR re-flow is not suitable process for through-hole type LED lamp
production.
6. 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
PART NO.: LTW-488D3
BNS-OD-C131/A4
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
PAGE:
6
of
7
LITE-ON TECHNOLOGY CORPORATION
Property of Lite-On Only
7. ESD (Electrostatic Discharge)
Static Electricity or power surge will damage the LED.
Suggestions to prevent ESD damage.
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 between LEDs during storage and handling.
ESD-damaged LEDs will exhibit abnormal characteristics such as high reverse leakage current, low
forward voltage, or “no light up” at low currents. To verify for ESD damage, check for “light up” and
Vf of the suspect LEDs at low currents.
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 ionize 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 wear 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 recycle?
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?
8. Others
White LED is materialized by combining blue LED and phosphors. Color of White LED is changed a
little by an operating current. The appearance and specifications of the product may be modified for
improvement, without prior notice.
PART NO.: LTW-488D3
BNS-OD-C131/A4
PAGE:
7
of
7