LITE-ON DCC
RELEASE
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
Through Hole Lamp
Product Data Sheet
LTL-4231NHBP
Spec No.: DS-20-97-0014
Effective Date: 11/23/2012
Revision: E
BNS-OD-FC001/A4
BNS-OD-FC001/A4
BNS-OD-FC001/A4
BNS-OD-FC001/A4
Features
* Lead (Pb) free product – RoHS compliant.
* Designed for ease in circuit board assembly.
* Black case enhance contrast ratio.
* Solid state light source.
* Reliable and rugged.
Package Dimensions
Part No.
Lens
Source Color
LTL-4231NHBP
Green Diffused
Green
NOTES:
1. All dimensions are in millimeters (inches).
2. Tolerance is ±0.25mm(.010") unless otherwise noted.
3. The holder color is black, the material in plastic.
4. The LED lamp is LTL-4231N.
5. Specifications are subject to change without notice.
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Absolute Maximum Ratings at Ta=25℃
Parameter
Maximum Rating
Unit
Power Dissipation
100
mW
Peak Forward Current
(1/10 Duty Cycle, 0.1ms Pulse Width)
120
mA
DC Forward Current
30
mA
Derating Linear From 50℃
0.4
mA/℃
Operating Temperature Range
-55℃ to + 100℃
Storage Temperature Range
-55℃ to + 100℃
Lead Soldering Temperature
[1.6mm(.063") From Body]
260℃ for 5 Seconds Max.
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Electrical / Optical Characteristics at TA=25℃
Parameter
Symbol
Min.
Typ.
Max.
Unit
Test Condition
Luminous Intensity
IV
5.6
12.6
50
mcd
IF = 10mA
Note 1,4
Viewing Angle
2θ1/2
60
deg
Note 2 (Fig.6)
Peak Emission Wavelength
λP
565
nm
Measurement
@Peak (Fig.1)
Dominant Wavelength
λd
564
569
574
nm
Note 3
Spectral Line Half-Width
Δλ
30
nm
Forward Voltage
VF
2.1
2.6
V
IF = 20mA
Reverse Current
IR
100
μA
VR = 5V
Note: 1. Luminous intensity is measured with a light sensor and filter combination that approximates the CIE
(Commission International De L'Eclairage) 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.
4. The Iv guarantee should be added ±15% .
5. Reverse voltage (VR) condition is applied for IR test only. The device is not designed for reverse operation.
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Typical Electrical / Optical Characteristics Curves
(25℃ Ambient Temperature Unless Otherwise Noted)
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Packing Spec.
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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 2mm 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 (for Lamp):
Soldering iron
Wave soldering
Temperature
Soldering time
300°C Max.
3 sec. Max.
(one time only)
Pre-heat
Pre-heat time
Solder wave
Soldering time
100°C Max.
60 sec. Max.
260°C Max.
10 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 Circuit model B
LED
LED
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(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. 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 lightup” at low currents. To verify for ESD damage, check for “lightup” 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 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 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 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?
8. Others
The appearance and specifications of the product may be modified for improvement, without prior notice.
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