High efficiency, two-digit numeric displays
LB-402DN Series
The LB-402 DN 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
two-digit displays with a character height of 10.16 mm.
Dimensions (Unit : mm)
24.0
12.0
10°
0.5
(2.54)
(20.32)
3.5Min.
7.0
2-φ 1.0
0.25
1.0
5.57
(15.24)
1.0
10.16
18.0
Features
1) Height of character : 10.16 mm
2) Common anode and common cathode
configurations are available for each color.
3) The package surface is painted black and
the segments are colored the display color.
4) High efficiency reflectors are used to
achieve a bright, clear display.
Tolerances are ±0.2 unless otherwise noted:
Selection guide
Emitting color
Red
Green
Anode
LB-402VD
LB-402MD
Cathode
LB-402VN
LB-402MN
Common
Pin assignments
18 17 16 15
+ + + +
14 13 12 11 10
+ + + + +
a2
a1
f1
f2
b1
b2
g2
g1
e1
e2
c1
c2
d2
d1
Digit 1 D.P1
+ + + +
Pin No. 1
2
3
4
Digit 2 D.P2
+
+ + + +
5
6
7
8
9
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c 2011 ROHM Co., Ltd. All rights reserved.
○
Pin No.
1
2
3
4
5
6
7
8
9
Function
Segment "e1"
Segment "d1"
Segment "c1"
D.P1
Segment "e2"
Segment "d2"
Segment "g2"
Segment "c2"
D.P2
1/3
Pin No.
10
11
12
13
14
15
16
17
18
Function
Segment "b2"
Segment "a2"
Segment "f2"
Digit 2 Common
Digit 1 Common
Segment "b1"
Segment "a1"
Segment "g1"
Segment "f1"
2011.04 - Rev.B
LB-402DN Series
Data Sheet
Internal circuit schematic (example of common anode)
Dig.1
14
Dig.2
13
COM
a1 b1 c1 d1 e1 f1 g1 D.P1
16 15 3 2 1 18 17 4
COM
a2 b2 c2 d2 e2 f2 g2 D.P2
11 10 8 6 5 12 7 9
Absolute maximum ratings (Ta = 25C)
Green
Red
Parameter
Symbol
LB-402VD / VN LB-402MD / MN
Unit
Power dissipation
PD
640
960
mW
Power dissipation
PD / seg
40
60
mW
Forward current
IF
15
20
mA
Peak forward current
IFP
60∗
60∗
mA
VR
3
Reverse voltage
V
3
Operating temperature
Topr
−25 to +75
°C
Storage temperature
Tstg
−30 to +85
°C
∗ Pulse width 1ms duty 1 / 5
 Electrical and optical characteristics (Ta = 25C)
Parameter
Forward voltage
Symbol Conditions
VF
Red
Green
Min. Typ. Max. Min. Typ. Max.
IF = 10mA
−
2.0
2.8
−
2.1
2.8
Unit
V
Reverse current
IR
VR = 3V
−
−
100
−
−
100
μA
Peak wavelength
λP
IF = 10mA
−
650
−
−
563
−
nm
Spectral line half
width
Δλ
IF = 10mA
−
40
−
−
40
−
nm
Not designed for radiation resistance.
 Luminous intensity
λP
Color
Red
650
Green
563
Type
LB-402VD
LB-402VN
LB-402MD
LB-402MN
Min.
Typ.
Max.
Unit
5.6
16
−
mcd
9.0
25
−
mcd
Note : Measured at IF = 10mA
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c 2011 ROHM Co., Ltd. All rights reserved.
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2/3
2011.04 - Rev.B
LB-402DN Series
Data Sheet
Electrical and optical characteristic curves
10.00
Ta=25°C
LB-402MD
LB-402MN
LB-402VD
LB-402VN
Relative Luminous Intensity
10
1
0.1
1
1.5
2
2.5
Ta=25°C
1.00
0.10
0.01
3
1
10
Forward Voltage:VF(V)
Fig.2 Relative Luminous Intensity - Forward Current
)
Fig.1 Forward Current - Forward Voltage
IF peak Max.
Ratio of Maximum Tolerable peak
IF Max.
Current to Maximum Forward Current
1.6
IF=10mA
10
LB-402MD
LB-402MN
0.8
0.6
0.4
-25 -15 -5
5
15 25 35 45 55 65 75
30Hz
100Hz
300Hz
1kHz
3kHz
30kHz
1
300kHz
1.2
100kHz
(
1.4
Relative Luminous Intensity
100
Forward Current:IF(mA)
10kHz
Forward Current:IF(mA)
100
1
1
10
100
1000
10000
100000
Pulse Duration : tw(µs)
Fig.3 Relative Luminous Intensity - Case Temperature
Fig.4 Ratio of Maximum Tolerable Peak Current - Pulse Duration ( Ι )
120%
10
100%
Forward Current (%)
100Hz
200Hz
500Hz
1kHz
2kHz
5kHz
10kHz
50kHz
20kHz
LB-402VD
LB-402VN
(
IF peak Max.
Ratio of Maximum Tolerable peak
IF Max.
Current to Maximum Forward Current
)
Case Temparature (°C)
80%
60%
40%
20%
1
1
10
100
1000
0%
-25 -15 -5
10000
Pulse Duration : tw(µs)
Fig.5 Ratio of Maximum Tolerable Peak Current - Pulse Duration ( ΙΙ )
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c 2011 ROHM Co., Ltd. All rights reserved.
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5 15 25 35 45 55 65 75 85
Ambient Temperature(°C)
Fig.6 Derating
3/3
2011.04 - Rev.B
Notice
Notes
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