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Infrared Light Emitting Diodes
LN77L
GaAlAs Infrared Light Emitting Diode
Unit : mm
For optical control systems Features
High-power output, high-efficiency : PO = 18 mW (typ.) Fast response and high-speed modulation capability : fC = 20 MHz (typ.) Wide directivity : = 20 deg. (typ.) Transparent epoxy resin package
1.0 7.650.2
o5.00.2
25.61.0 5.050.3 1.5 (2.0)
2-0.8 max. 2-0.60.15
2.54 0.60.15 1 2 1: Anode 2: Cathode
Parameter Power dissipation Forward current (DC) Pulse forward current Reverse voltage (DC) Operating ambient temperature Storage temperature
*
Symbol PD IF IFP* VR Topr Tstg
Ratings 190 100 1 3 -25 to +85 -30 to +100
Unit mW mA A V C C
tw = 10 s, Duty cycle = 0.1 %
Electro-Optical Characteristics (Ta = 25C)
Parameter Radiant power Peak emission wavelength Spectral half band width Forward voltage (DC) Reverse current (DC) Half-power angle Cutoff frequency
*
Symbol PO P VF IR fC*
Conditions IF = 50mA IF = 50mA IF = 50mA IF = 100mA VR = 3V
The angle in which radiant intencity is 50%
min 10
o6.00.2
Absolute Maximum Ratings (Ta = 25C)
typ 18 860 40 1.6 20 20
max
Not soldered 2.0 max.
Unit mW nm nm
1.9 10
V A deg. MHz
IFP = 50mA + 10mAp-p
Frequency when modulation optical power decreases by 3dB from 1MHz
(
PO(fCMHz) 10 log =-3 P O (1MHz)
)
1
LN77L
Infrared Light Emitting Diodes
IF -- Ta
120 10 2
IFP -- Duty cycle
tw = 10s Ta = 25C 10 4
IFP -- VF
tw = 10s f = 100Hz Ta = 25C
IF (mA)
IFP (mA) Pulse forward current
1 10 10 2
IFP (A)
100
10 3
10
Allowable forward current
80
Pulse forward current
10 2
60
1
10
40
10 -1
20
1
0 - 25
0
20
40
60
80
100
10 -2 10 -1
10 -1
0
1
2
3
4
5
Ambient temperature Ta (C )
Duty cycle (%)
Forward voltage VF (V)
PO -- IFP
10 2 (1) tw = 10s f = 100Hz (2) DC Ta = 25C 2.2
VF -- Ta
10
PO -- Ta
IF = 50mA
Relative radiant power PO
VF (V)
10
1.8 IF = 100mA 50mA
Forward voltage
(2) 1
1.4
Relative radiant power PO
120
(1)
1
10 -1
1.0
10 -2
1
10
10 2
10 3
0.6 - 40
0
40
80
10 -1 - 40
0
40
80
Pulse forward current IFP (mA)
Ambient temperature Ta (C )
Ambient temperature Ta (C )
P -- Ta
920 IF = 50mA 100
Spectral characteristics
IF = 50mA Ta = 25C
Directivity characteristics
0 100 10 20
Peak emission wavelength P (nm)
Relative radiant Intensity (%)
900
80
80 70
Relative radiant intensity (%)
90
30
880
60
60 50 40
40 50 60 70 80 90
860
40
30 20
840
20
820 - 40
0
40
80
120
0 750
800
850
900
950
1000 1050
Ambient temperature Ta (C )
Wavelength (nm)
2
Caution for Safety
Gallium arsenide material (GaAs) is used in this product.
DANGER
Therefore, do not burn, destroy, cut, crush, or chemically decompose the product, since gallium arsenide material in powder or vapor form is harmful to human health. Observe the relevant laws and regulations when disposing of the products. Do not mix them with ordinary industrial waste or household refuse when disposing of GaAs-containing products.
Request for your special attention and precautions in using the technical information and semiconductors described in this material
(1) An export permit needs to be obtained from the competent authorities of the Japanese Government if any of the products or technologies described in this material and controlled under the "Foreign Exchange and Foreign Trade Law" is to be exported or taken out of Japan. (2) The technical information described in this material is limited to showing representative characteristics and applied circuit examples of the products. It does not constitute the warranting of industrial property, the granting of relative rights, or the granting of any license. (3) The products described in this material 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 products 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 material are subject to change without notice for reasons of modification and/or improvement. 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 guaranteed values, in particular those of maximum rating, the range of operating power supply voltage and heat radiation characteristics. 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, redundant design is recommended, so that such equipment may not violate relevant laws or regulations because of the function of our products. (6) When using products for which dry packing is required, observe the conditions (including shelf life and afterunpacking standby time) agreed upon when specification sheets are individually exchanged. (7) No part of this material may be reprinted or reproduced by any means without written permission from our company.
Please read the following notes before using the datasheets
A. These materials are intended as a reference to assist customers with the selection of Panasonic semiconductor products best suited to their applications. Due to modification or other reasons, any information contained in this material, such as available product types, technical data, and so on, is subject to change without notice. Customers are advised to contact our semiconductor sales office and obtain the latest information before starting precise technical research and/or purchasing activities. B. Panasonic is endeavoring to continually improve the quality and reliability of these materials but there is always the possibility that further rectifications will be required in the future. Therefore, Panasonic will not assume any liability for any damages arising from any errors etc. that may appear in this material. C. These materials are solely intended for a customer's individual use. Therefore, without the prior written approval of Panasonic, any other use such as reproducing, selling, or distributing this material to a third party, via the Internet or in any other way, is prohibited. 2001 MAR

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