Panasonic LNG251RKR User manual

SHD00400BEK
This product complies with the RoHS Directive (EU 2002/95/EC).
Publication date: November 2008 1
Light Emitting Diodes
LNG251RKR
Square Type
4.0 mm ×2.0 mm
Absolute Maximum Ratings Ta= 25°C
Parameter Symbol Rating Unit
Power dissipation PD70 mW
Forward current IF25 mA
Pulse forward current *IFP 150 mA
Reverse voltage VR4 V
Operating ambient temperature Topr –25 to +85 °C
Storage temperature Tstg –30 to +100 °C
Note) *: The condition of IFP is duty 10%, Pulse width 1 msec.
Electro-Optical Characteristics Ta= 25°C
Parameter Symbol Conditions Min Typ Max Unit
Luminous intensity IO0.25 0.5 mcd
Reverse current IRVR= 4 V 5 µA
Forward voltage VFIF= 20 mA 2.2 2.8 V
Peak emission wavelength λPIF= 20 mA 700 nm
Spectral half band width Δλ IF= 20 mA 100 nm
0
10
20
30
40
50
01.7 1.9 2.1 2.3 2.5 −20 20 40 60 80 100
020 40 60 80 100
10
1
3
5
10
0.03
0.01
0.5
0.05
0.1
0.3
1
30
50
100
30
50
100
300
500
1 000
0
20
40
60
80
100
700600 800 900
1 3 5 10 30 50 100
0
20 2040 4060 6080 80100 100
0°10°10°20°20°
30°30°
40°40°
50°50°
60°60°
70°70°
80°80°
80°
60°
40°
20°
90°90°
Y
X
Y
X
IOIFIFVF
IFTa
Directive characteristics
Relative luminous intensity (%) Ambient temperature Ta(°C)
Ambient temperature Ta(°C)
Forward current IF(mA)
Forward voltage VF(V)Forward current IF(mA)
Luminous intensity IO(mcd)
Relative luminous intensity (%)
Relative luminous intensity Ta
Relative luminous intensity λP
Peak emission wavelength λP(nm)
Relative luminous intensity (%)
Forward current IF(mA)
Lighting Color
Red

SHD00400BEK
This product complies with the RoHS Directive (EU 2002/95/EC).
LNG251RKR
2
Package (Unit: mm)
LLXFTN2SK510
2.54
1 2
2.0 ±0.2
4.0 ±0.2
0.45 ±0.1
0.5 ± 2.0
5.62
±0.1
3.3 ± 3.0
0.1
5.1
2− 0.7 Max
2− 0.45 ± 0.1
DER
EDL
OST
ON.x
aM2
Pin name
1: Anode
2: Cathode

Request for your special attention and precautions in using the technical information and
semiconductors described in this book
(1)If any of the products or technical information described in this book is to be exported or provided to non-residents, the laws and
regulations of the exporting country, especially, those with regard to security export control, must be observed.
(2)The technical information described in this book is intended only to show the main characteristics and application circuit examples
of the products. No license is granted in and to any intellectual property right or other right owned by Panasonic Corporation or any
other company. Therefore, no responsibility is assumed by our company as to the infringement upon any such right owned by any
other company which may arise as a result of the use of technical information described in this book.
(3)The products described in this book are intended to be used for standard applications or general electronic equipment (such as office
equipment, communications equipment, measuring instruments and household appliances).
Consult our sales staff in advance for information on the following applications:
–Special applications (such as for airplanes, aerospace, automobiles, traffic control equipment, combustion equipment, life support
systems and safety devices) in which exceptional quality and reliability are required, or if the failure or malfunction of the prod-
ucts may directly jeopardize life or harm the human body.
–Any applications other than the standard applications intended.
(4)The products and product specifications described in this book are subject to change without notice for modification and/or im-
provement. At the final stage of your design, purchasing, or use of the products, therefore, ask for the most up-to-date Product
Standards in advance to make sure that the latest specifications satisfy your requirements.
(5)When designing your equipment, comply with the range of absolute maximum rating and the guaranteed operating conditions
(operating power supply voltage and operating environment etc.). Especially, please be careful not to exceed the range of absolute
maximum rating on the transient state, such as power-on, power-off and mode-switching. Otherwise, we will not be liable for any
defect which may arise later in your equipment.
 Even when the products are used within the guaranteed values, take into the consideration of incidence of break down and failure
mode, possible to occur to semiconductor products. Measures on the systems such as redundant design, arresting the spread of fire
or preventing glitch are recommended in order to prevent physical injury, fire, social damages, for example, by using the products.
(6)Comply with the instructions for use in order to prevent breakdown and characteristics change due to external factors (ESD, EOS,
thermal stress and mechanical stress) at the time of handling, mounting or at customer's process. When using products for which
damp-proof packing is required, satisfy the conditions, such as shelf life and the elapsed time since first opening the packages.
(7)This book may be not reprinted or reproduced whether wholly or partially, without the prior written permission of our company.
20080805