ROHM LB

High efficiency, two-digit numeric displays
LB-302FP Series
The LB-302FP series were designed to meet the need for multi-digit numeric displays. These two-digit LED numeric displays
have a character height of 7.62 mm.
Dimensions (Unit : mm)
Features
1) Height of character : 7.62 mm
2) High efficiency in a compact package.
3) Common anode and common cathode
configurations are available for red and green.
4) The package surface is painted black and
the segments are milky white.
15.5
(10.16)
0.7
0.7
7.62
15.0
10° 7.0
C0.5
φ0.5
(2.54)
(10.16)
5.3±0.5
7.2
3.94
Tolerances are ±0.25 unless otherwise noted:
Selection guide
Emitting color
Red
Green
Anode
LB-302VF
LB-302MF
Cathode
LB-302VP
LB-302MP
Common
Pin assignments
10
9
8
7
6
+
+
+
+
+
a
a
f
f
b
b
g
e
g
e
c
d
+
Pin No.
1
c
d
Dig.1
+
+
+
2
3
4
Dig.2
+
5
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c 2011 ROHM Co., Ltd. All rights reserved.
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Pin No.
Function
1
2
3
4
5
6
7
8
9
10
Segment "g"
D.P
Segment "a"
Segment "f"
Digit 2 Common
Segment "d"
Segment "e"
Segment "c"
Segment "b"
Digit 1 Common
1/3
2011.04 - Rev.B
LB-302FP Series
Data Sheet
Internal circuit schematic (example of common cathode)
Pin No.
10 Dig.1
5 Dig.2
Pin No. 3
a
9
b
8
c
6
d
7
e
4
f
1
g
2
D.P
Absolute maximum ratings (Ta = 25C)
Parameter
Symbol
Red
Green
LB-302VF / VP
LB-302MF / MP
Unit
Power dissipation
PD
800
960
mW
Power dissipation
PD / seg
50
60
mW
IF
15
20
mA
Peak forward current
IFP
60∗
60∗
mA
Reverse voltage
VR
5
5
V
Forward current
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
Symbol Conditions
Red
Green
Min. Typ. Max. Min. Typ. Max.
Unit
Forward voltage
VF
IF = 10mA
−
2.0
2.8
−
2.1
2.8
V
Reverse current
IR
VR = 5V
−
−
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
Color
λP
Type
Min.
Typ.
Max.
Unit
Red
650
LB-302VF / VP
2.2
6.3
−
mcd
Green
563
LB-302MF / MP
3.6
9.0
−
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-302FP Series
Data Sheet
Electrical and optical characteristic curves
10.00
Ta=25°C
LB-302MF
LB-302MP
LB-302VF
LB-302VP
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-302MF
LB-302MP
0.8
0.6
0.4
-25 -15 -5
5
15 25 35 45 55 65 75
30Hz
100Hz
300Hz
1kHz
10kHz
30kHz
1
300kHz
1.2
100kHz
(
1.4
Relative Luminous Intensity
100
Forward Current:IF(mA)
3kHz
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-302VF
LB-302VP
(
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
5 15 25 35 45 55 65 75 85
Pulse Duration : tw(µs)
Ambient Temperature(°C)
Fig.5 Ratio of Maximum Tolerable Peak Current - Pulse Duration ( ΙΙ )
Fig.6 Derating
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c 2011 ROHM Co., Ltd. All rights reserved.
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3/3
2011.04 - Rev.B
Notice
Notes
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More detail product informations and catalogs are available, please contact us.
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http://www.rohm.com/contact/
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© 2011 ROHM Co., Ltd. All rights reserved.
R1120A