ROHM LB

LB-202BL Series
LED displays
High efficiency, two-digit numeric displays
LB-202BL Series
!External Dimensions (Units: mm)
The LB-202BL series are small, two-digit numeric
displays with a character height of 6.4 mm. These
displays can be combined with appropriate displays in
the three-digit LB-203 BL series to form a multi-digit
display with an equal pitch interval between characters.
12.8 +0
−0.2
6.4
(12.2)
0.3
2−φ0.7
0.5
(2.54)
(10.16)
7.9Min.
+0
5.5 −0.2
0.7
3.4
+0
15.0 −0.2
0.7
!Features
1) Four colors are available: red, orange, yellow, and
green.
2) Common anode and common cathode configurations
are available.
3) Dynamic lighting system to minimize the number of
pins.
4) The package surface is painted black and the
segments are colored the display color.
6.4
10˚
Tolerances are ±0.3 unless otherwise noted :
!Selection guide
Emitting color
Orange
Red
Yellow
Green
Common
LB-202VB
LB-202DB ∗
LB-202YB ∗
LB-202MB
LB-202VL
Cathode
∗ Order-based production.
LB-202DL ∗
LA-202YL ∗
LB-202ML
Anode
!Pin assignments
10
+
9
+
8
+
7
+
a
a
f
f
b
b
g
e
g
e
c
d
+
Pin No. 1
6
+
c
d
Dig.1
+
2
+
3
+
4
Dig.2
+
5
Pin No.
Function
1
2
3
4
5
6
7
8
9
10
Digit 1 Common
Segment "e"
Segment "d"
Segment "c"
D.P
Digit 2 Common
Segment "g"
Segment "b"
Segment "a"
Segment "f"
LB-202BL Series
LED displays
!Internal circuit schematic (example of common cathode)
Dig.1
1
Dig.2
6
5 7 10 2
D.P g f e
3 4 8 9
d c b a
!Absolute maximum ratings (Ta=25°C)
Parameter
Red
Symbol
Orange
Yellow
Green
Unit
LB-202VB / VL LB-202DB / DL LB-202YB / YL LB-202MB / ML
640
640
640
640
mW
40
60
mW
15
60∗
20
60∗
mA
Power dissipation
PD
Power dissipation
PD / seg
40
40
Forward current
IF
Peak forward current
IFP
15
60∗
15
60∗
Reverse voltage
VR
3
3
3
3
mA
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
Min.
Typ. Max. Min.
Green
Yellow
Orange
Red
Symbol Conditions
Typ. Max. Min.
Typ. Max. Min.
Typ. Max.
Unit
Forward voltage
VF
IF=10mA
−
2.0
2.8
−
2.0
2.8
−
2.1
2.8
−
2.1
2.8
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
Type
LB-202VB
Min.
Typ.
Max.
Unit
2.2
6.3
−
mcd
2.2
6.3
−
mcd
2.2
6.3
−
mcd
2.2
6.3
−
mcd
LB-202VL
Orange
610
LB-202DB
LB-202DL
Yellow
585
LB-202YB
LB-202YL
Green
563
LB-202MB
LB-202ML
Note : Measured at IF=10mA