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LB-303AK Series
LED displays
High efficiency, three-digit numeric displays
LB-303AK Series
The LB-303AK series were designed to meet the need for multi-digit numeric displays. These LED numeric displays use GaAsP on GaP for the emitting material (with the exception of green) and are housed in an epoxy resin package. They are three-digit displays with a character height of 8.0 mm. Dimensions (Unit : mm)
22.0 7.0 7.0 10
8.0 13.0
1.0 4.0
3- 0.9
Features 1) Height of character : 8.0 mm 2) High efficiency in a compact package. 3) Common anode and common cathode configurations are available for red, orange and green. 4) The package surface is painted black and the segments are colored the display color.
(2.54) (12.7)
5.00.5
0.5
5.0
Tolerances are 0.3 unless otherwise noted:
Selection guide
Emitting color
Common Anode Cathode
Order-based production.
Red LB-303VA LB-303VK
Orange LB-303DA LB-303DK
Green LB-303MA LB-303MK
Pin assignments
Pin No.
11 + a f e g c b e f 10 + 9 + a g c 8 + 7 + a b e f g c b
Function Segment "c" Digit 1 Common Segment "d" Digit 2 Common Digit 3 Common Segment D.P Segment "b" Segment "f" Segment "a" Segment "e" Segment "g"
d
d
d
Digit 1 D.P1 + + Pin No. 1 2
Digit 2 D.P2 Digit 3 D.P3 + + + + 3 4 5 6
1 2 3 4 5 6 7 8 9 10 11
0.5
Rev.A
(9.2)
1.0
1/2
LB-303AK Series
LED displays
Internal circuit schematic (example of common anode)
a 9 b 7 c 1 d 3 e 10 f 8 g D.P 11 6
2 Dig.1 4 Dig.2 5 Dig.3
Absolute maximum ratings (Ta = 25C)
Red Parameter Power dissipation Power dissipation Forward current Peak forward current Reverse voltage Operating temperature Storage temperature Symbol PD PD / seg IF IFP VR Topr Tstg LB-303VA / VK 960 40 15 60 3 Orange LB-303DA / DK 960 40 15 60 3 -25 to +75 -30 to +85 Green LB-303MA / MK 1440 60 20 60 3 Unit mW mW mA mA V C C
Pulse width 1ms duty 1 / 5
Electrical and optical characteristics (Ta = 25C)
Parameter Forward voltage Reverse current Peak wavelength Spectral line half width Symbol Conditions VF IR P IF = 10mA VR = 3V IF = 10mA IF = 10mA Red Min. - - - - Typ. Max. Min. 2.0 - 650 40 2.8 100 - - - - - - Orange Typ. Max. Min. 2.0 - 610 40 2.8 100 - - - - - - Green Typ. Max. 2.1 - 563 40 2.8 100 - - Unit V A nm nm
Not designed for radiation resistance.
Luminous intensity
Color Red P 650 Type LB-303VA LB-303VK Orange 610 LB-303DA LB-303DK LB-303MA Green
Note : Measured at IF = 10mA
Min. 1.4
Typ. 4.0
Max. - - -
Unit mcd
1.4
4.0
mcd
563
LB-303MK
2.2
6.3
mcd
Rev.A
2/2
Appendix
Notes
No technical content pages of this document may be reproduced in any form or transmitted by any means without prior permission of ROHM CO.,LTD. The contents described herein are subject to change without notice. The specifications for the product described in this document are for reference only. Upon actual use, therefore, please request that specifications to be separately delivered. Application circuit diagrams and circuit constants contained herein are shown as examples of standard use and operation. Please pay careful attention to the peripheral conditions when designing circuits and deciding upon circuit constants in the set. Any data, including, but not limited to application circuit diagrams information, described herein are intended only as illustrations of such devices and not as the specifications for such devices. ROHM CO.,LTD. disclaims any warranty that any use of such devices shall be free from infringement of any third party's intellectual property rights or other proprietary rights, and further, assumes no liability of whatsoever nature in the event of any such infringement, or arising from or connected with or related to the use of such devices. Upon the sale of any such devices, other than for buyer's right to use such devices itself, resell or otherwise dispose of the same, no express or implied right or license to practice or commercially exploit any intellectual property rights or other proprietary rights owned or controlled by ROHM CO., LTD. is granted to any such buyer. Products listed in this document are no antiradiation design.
The products listed in this document are designed to be used with ordinary electronic equipment or devices (such as audio visual equipment, office-automation equipment, communications devices, electrical appliances and electronic toys). Should you intend to use these products with equipment or devices which require an extremely high level of reliability and the malfunction of with would directly endanger human life (such as medical instruments, transportation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers and other safety devices), please be sure to consult with our sales representative in advance. About Export Control Order in Japan Products described herein are the objects of controlled goods in Annex 1 (Item 16) of Export Trade Control Order in Japan. In case of export from Japan, please confirm if it applies to "objective" criteria or an "informed" (by MITI clause) on the basis of "catch all controls for Non-Proliferation of Weapons of Mass Destruction.
Appendix1-Rev1.1

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