Rohm LB-303AK High efficiency, three-digit numeric display Datasheet

LB-303AK Series
LED displays
High efficiency, three-digit numeric
displays
LB-303AK Series
zDimensions (Unit : mm)
22.0
7.0
7.0
1.0
3- φ 0.9
(9.2)
φ 0.5
1.0
10°
8.0
13.0
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.
4.0
φ 0.5
(2.54)
(12.7)
5.0±0.5
5.0
zFeatures
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.
Tolerances are ±0.3 unless otherwise noted:
zSelection guide
Emitting color
Red
Orange
Green
Anode
LB-303VA
LB-303DA∗
LB-303MA
Cathode
LB-303VK
LB-303DK∗
LB-303MK
Common
∗Order-based production.
zPin assignments
11
10
9
8
7
+
+
+
a
+
+
a
f
e
b
g
c
d
1
2
b
g
e
Digit 1 D.P1
+
+
Pin No.
f
a
c
d
f
e
b
g
d
c
Digit 2 D.P2 Digit 3 D.P3
+
+
+
+
3
4
5
6
Pin No.
Function
1
2
3
4
5
6
7
8
9
10
11
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"
Rev.A
1/2
LB-303AK Series
LED displays
zInternal 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
zAbsolute maximum ratings (Ta = 25°C)
Parameter
Symbol
Red
Orange
Green
LB-303VA / VK
LB-303DA / DK
LB-303MA / MK
Unit
Power dissipation
PD
960
960
1440
mW
Power dissipation
PD / seg
40
40
60
mW
Forward current
IF
15
15
20
mA
Peak forward current
IFP
60∗
60∗
60∗
mA
Reverse voltage
VR
3
3
3
V
Operating temperature
Topr
−25 to +75
°C
Storage temperature
Tstg
−30 to +85
°C
∗ Pulse width 1ms duty 1 / 5
z Electrical and optical characteristics (Ta = 25°C)
Parameter
Symbol Conditions
Red
Min.
Orange
Typ. Max. Min.
Green
Typ. Max. Min.
Typ. Max.
Unit
Forward voltage
VF
IF = 10mA
−
2.0
2.8
−
2.0
2.8
−
2.1
2.8
V
Reverse current
IR
VR = 3V
−
−
100
−
−
100
−
−
100
µA
Peak wavelength
λP
IF = 10mA
−
650
−
−
610
−
−
563
−
nm
Spectral line half width
∆λ
IF = 10mA
−
40
−
−
40
−
−
40
−
nm
Not designed for radiation resistance.
z Luminous intensity
Color
Red
λP
650
Type
LB-303VA
Min.
Typ.
Max.
Unit
1.4
4.0
−
mcd
1.4
4.0
−
mcd
2.2
6.3
−
mcd
LB-303VK
Orange
610
Green
563
LB-303DA
LB-303DK
LB-303MA
LB-303MK
Note : Measured at IF = 10mA
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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