ROHM LB-402

LB-402DN Series
LED displays
High efficiency, two-digit numeric displays
LB-402DN Series
!External dimensions (Units : mm)
24.0
12.0
10°
7.0
!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.
2-φ 1.0
0.25
1.0
5.57
(15.24)
1.0
10.16
18.0
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.
3.5Min.
0.5
(2.54)
(20.32)
Tolerances are ±0.2 unless otherwise noted:
!Selection guide
Emitting color
Red
Orange
Yellow
Green
Anode
LB-402VD
LB-402DD∗
LB-402YD∗
LB-402MD
Cathode
LB-402VN
LB-402DN∗
LB-402YN∗
LB-402MN
Common
∗Order-based production.
!Pin assignments
18 17 16 15
+ + + +
14 13 12 11 10
+ + + + +
a1
f1
a2
b1
f2
b2
g1
g2
e1
c1
e2
c2
d2
d1
Digit 1 D.P1
+ + + + +
Pin No. 1
2
3
4
5
Digit 2 D.P2
+ + + +
6
7
8
9
Pin No.
Function
Pin No.
Function
1
2
3
4
5
6
7
8
9
Segment "e1"
Segment "d1"
Segment "c1"
D.P1
Segment "e2"
Segment "d2"
Segment "g2"
Segment "c2"
D.P2
10
11
12
13
14
15
16
17
18
Segment "b2"
Segment "a2"
Segment "f2"
Digit 2 Common
Digit 1 Common
Segment "b1"
Segment "a1"
Segment "g1"
Segment "f1"
LB-402DN Series
LED displays
!Internal circuit schematic (example of common anode)
Dig.1
14
COM
Dig.2
13
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)
Orange
Red
Parameter
Symbol
Yellow
Green
LB-402VD / VN LB-402DD / DN LB-402YD / YN LB-402MD / MN
Unit
Power dissipation
PD
640
640
640
960
mW
Power dissipation
PD / seg
40
40
40
60
mW
Forward current
IF
15
15
15
20
mA
Peak forward current
IFP
60∗
60∗
60∗
60∗
mA
Reverse voltage
VR
3
3
3
3
V
Operating temperature
Topr
−25~+75
°C
Storage temperature
Tstg
−30~+85
°C
∗ Pulse width 1ms duty 1 / 5
! Electrical and optical characteristics (Ta = 25°C)
Parameter
Forward voltage
Symbol Conditions
VF
Red
Orange
Yellow
Green
Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Min. Typ. Max.
IF = 10mA
−
2.0
2.8
−
2.0
2.8
−
2.1
2.8
−
2.1
2.8
Unit
V
Reverse current
IR
VR = 3V
−
−
100
−
−
100
−
−
100
−
−
100
µA
Peak wavelength
λP
IF = 10mA
−
650
−
−
610
−
−
585
−
−
563
−
nm
Spectral line half
width
∆λ
IF = 10mA
−
40
−
−
40
−
−
40
−
−
40
−
nm
Not designed for radiation resistance.
! Luminous intensity
λP
Color
Red
650
Orange
610
Yellow
585
Green
563
Note : Measured at IF = 10mA
Type
LB-402VD
LB-402VN
LB-402DD
LB-402DN
LB-402YD
LB-402YN
LB-402MD
LB-402MN
Min.
Typ.
Max.
Unit
5.6
16
−
mcd
3.6
10
−
mcd
3.6
10
−
mcd
9.0
25
−
mcd