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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.
External dimensions (Units : mm)
22.0
7.0
7.0
10 °
1.0
4.0
φ
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.
φ 0.5
(2.54)
(12.7)
Tolerances are
±
0.3 unless otherwise noted:
Selection guide
Emitting color
Red
Orange
Green
Common
Anode
LB-303VA
LB-303DA ∗
LB-303MA
Cathode
LB-303VK
LB-303DK ∗
LB-303MK
∗ Order-based production.
Pin assignments
Pin No.
Function
11
10
9
8
7
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"
+
+
+
+
+
a
a
a
f
g
b
f
g
b
f
g
b
e
c
e
c
e
c
d
d
d
Digit 1
Digit 2
Digit 3
D.P1
D.P2
D.P3
+
+
+
+
+
+
Pin No.
1
2
3
4
5
6
397522857.002.png 397522857.003.png 397522857.004.png
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
11
D.P
6
2 Dig.1
4 Dig.2
5 Dig.3
Absolute maximum ratings (Ta = 25
°
C)
Red
Orange
Green
Parameter
Symbol
LB-303VA / VK LB-303DA / DK LB-303MA / MK
960
40
15
60 ∗
3
Unit
Power dissipation
Power dissipation
Forward current
Peak forward current
Reverse voltage
Operating temperature
Storage temperature
P D
P D / seg
I F
I FP
V R
Topr
Tstg
960
40
15
60 ∗
3
1440
60
20
60 ∗
3
mW
mW
mA
mA
V
°
−
25~
+
75
C
−
30~
+
85
°
C
∗
Pulse width 1ms duty 1 / 5
Electrical and optical characteristics (Ta = 25
°
C)
Red
Orange
Green
Parameter
Symbol
Conditions
Unit
Min. Typ. Max. Min. Typ. Max.
2.8
Min. Typ. Max.
2.8
Forward voltage
Reverse current
Peak wavelength
Spectral line half width
Not designed for radiation resistance.
V F
I R
λ
I F
10mA
V R
=
−
2.0
2.8
−
− −
2.0
−
− −
2.1
V
µ
=
3V
− −
100
100
−
−
100
−
−
A
nm
nm
P
I F
=
10mA
−
650
40
−
−
610
40
−
563
40
∆λ
I F
=
10mA
−
−
−
−
Luminous intensity
Color
λ
P
Type
Min.
Typ.
Max.
Unit
Red
650
LB-303VA
LB-303VK
LB-303DA
LB-303DK
LB-303MA
LB-303MK
1.4
4.0
−
mcd
Orange
610
1.4
4.0
−
mcd
Green
563
2.2
6.3
−
mcd
Note : Measured at I F = 10mA
397522857.005.png 397522857.001.png

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