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.
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.
Dimensions
(Unit : mm)
24.0
12.0
10°
1.0
10.16
18.0
1.0
5.57
2-
φ
1.0
(20.32)
Tolerances are
±
0.2 unless otherwise noted:
Selection
guide
Emitting color
Common
Anode
Cathode
Red
LB-402VD
LB-402VN
Green
LB-402MD
LB-402MN
Pin
assignments
18 17 16 15
+ + + +
a1
14 13 12 11 10
+ + + + +
a2
f2
g2
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
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"
f1
g1
e1
d1
b1
b2
c1
Digit 1 D.P1
2
3
e2
d2
c2
Digit 2 D.P2
7
8
9
+ + + +
Pin No. 1
4
+
5
+ + + +
6
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c
○
2011 ROHM Co., Ltd. All rights reserved.
3.5Min.
0.5
(2.54)
7.0
0.25
(15.24)
1/3
2011.04 - Rev.B
LB-402DN Series
Internal
circuit schematic
(example of common anode)
Dig.1
14
COM
Dig.2
13
COM
Data Sheet
a1 b1 c1 d1 e1 f1 g1 D.P1
16 15 3 2 1 18 17 4
a2 b2 c2 d2 e2 f2 g2 D.P2
11 10 8 6 5 12 7 9
Absolute
maximum ratings
(Ta = 25C)
Red
Parameter
Power dissipation
Power dissipation
Forward current
Peak forward current
Reverse voltage
Operating temperature
Storage temperature
Symbol
P
D
P
D
/ seg
I
F
I
FP
V
R
Topr
Tstg
Green
Unit
mW
mW
mA
mA
V
°C
°C
LB-402VD / VN LB-402MD / MN
640
40
15
60
∗
3
−25
to
+75
−30
to
+85
960
60
20
60
∗
3
∗
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
V
F
I
R
λ
P
Δλ
I
F
=
10mA
V
R
=
3V
I
F
=
10mA
I
F
=
10mA
Red
−
−
−
−
−
−
−
−
Green
Min. Typ. Max. Min. Typ. Max.
2.0
−
650
40
2.8
100
−
−
2.1
−
563
40
2.8
100
−
−
Unit
V
μA
nm
nm
Not designed for radiation resistance.
Luminous intensity
Color
Red
λ
P
650
Type
LB-402VD
LB-402VN
LB-402MD
LB-402MN
Min.
5.6
Typ.
16
Max.
−
−
Unit
mcd
Green
563
9.0
25
mcd
Note : Measured at I
F
= 10mA
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2011 ROHM Co., Ltd. All rights reserved.
2/3
2011.04 - Rev.B
LB-402DN Series
Electrical
and optical characteristic curves
100
Ta=25°C
Data Sheet
10.00
10
Relative Luminous Intensity
Forward Current:I
F
(mA)
LB-402MD
LB-402MN
LB-402VD
LB-402VN
Ta=25°C
1.00
1
0.10
0.1
1
1.5
2
2.5
3
0.01
1
10
Forward Current:I
F
(mA)
100
Forward Voltage:V
F
(V)
Fig.1 Forward Current - Forward Voltage
Fig.2 Relative Luminous Intensity - Forward Current
)
I
F
=10mA
I
F
peak Max.
Ratio of Maximum Tolerable peak
I
F
Max.
Current to Maximum Forward Current
1.6
1.4
10
LB-402MD
LB-402MN
Relative Luminous Intensity
1.2
1
0.8
0.6
0.4
-25 -15 -5
(
100kHz
300Hz
100Hz
30kHz
10kHz
5
15 25 35 45 55 65 75
1
1
300kHz
10
100
1000
30Hz
3kHz
1kHz
10000
100000
Case Temparature (°C)
Pulse Duration : tw(µs)
Fig.3 Relative Luminous Intensity - Case Temperature
Fig.4 Ratio of Maximum Tolerable Peak Current - Pulse Duration (
Ι
)
I
F
peak Max.
Ratio of Maximum Tolerable peak
I
F
Max.
Current to Maximum Forward Current
10
120%
)
LB-402VD
LB-402VN
500Hz
200Hz
100Hz
50kHz
20kHz
10kHz
100%
80%
60%
40%
20%
(
5kHz
2kHz
1kHz
Forward Current (%)
1
1
10
100
1000
10000
0%
-25 -15 -5
5 15 25 35 45 55 65 75 85
Ambient Temperature(°C)
Pulse Duration : tw(µs)
Fig.5 Ratio of Maximum Tolerable Peak Current - Pulse Duration (
ΙΙ
)
Fig.6 Derating
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2011.04 - Rev.B
Notice
Notes
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R1120A