High efficiency, single-digit numeric displays
LA-501DN Series
The LA-501DN series were designed to meet the need for 13mm single-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
single-digit displays with a character height of 13.0mm.
Features
1) Height of character: 13.0mm
2) Common anode and common cathode
configurations are available for each color.
3) High-efficiency reflectors are used to
achieve a bright, clear display.
4) The package surface is painted black and
the segments are colored the display color.
Dimensions
(Unit : mm)
12.5
10°
1.25
1.25
7.4
φ1.25
(10.16)
3.5Min.
0.5
(2.54)
7.0
Tolerances are
±0.2
unless otherwise noted:
Selection
guide
Emitting color
Red
Common
Anode
Cathode
LA-501VD
LA-501VN
LA-501MD
LA-501MN
Green
Pin
assignments
Pin No.
10 9
8
7
6
Function
Segment "e"
Segment "d"
Common
Segment "c"
D.P
Segment "b"
Segment "a"
Common
Segment "f"
Segment "g"
+ + + + +
a
f
g
b
e
d
c
+ + + + +
Pin No. 1
2
3
4
D.P
5
1
2
3
4
5
6
7
8
9
10
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2011 ROHM Co., Ltd. All rights reserved.
0.25
1/3
2011.04 - Rev.B
(15.24)
13.0
17.5
LA-501DN Series
Internal
circuit schematic
(example of common cathode)
COM
3,8
Data Sheet
a b c d e f g D.P
7 6 4 2 1 9 10 5
Absolute
maximum ratings
(Ta = 25C)
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
Red
Green
Unit
mW
mW
mA
mA
V
°C
°C
LA-501VD / VN LA-501MD / MN
480
60
20
60
∗
5
−25~+75
−30~+85
480
60
20
60
∗
5
∗
Pulse width 1ms duty 1 / 5
Electrical and optical characteristics
(Ta = 25C)
Parameter
Forward voltage
Reverse current
Peak wavelength
Spectral line half width
Not designed for radiation resistance.
Symbol Conditions
Min.
V
F
I
R
I
F
=
10mA
V
R
=
5V
I
F
=
10mA
I
F
=
10mA
−
−
−
−
Red
Typ. Max. Min.
2.0
−
650
40
2.8
100
−
−
−
−
−
−
Green
Typ. Max.
2.1
−
563
40
2.8
100
−
−
Unit
V
μA
nm
nm
λ
P
Δλ
Luminous intensity
Color
Red
λ
P
650
Type
LA-501VD
LA-501VN
Green
563
LA-501MD
LA-501MN
Note : Measured at I
F
=
10 mA
Min.
5.6
Typ.
16
Max.
−
−
Unit
mcd
5.6
16
mcd
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2011 ROHM Co., Ltd. All rights reserved.
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2011.04 - Rev.B
LA-501DN Series
Electrical
and optical characteristic curves
100
Ta=25°C
Data Sheet
10
Relative Luminous Intensity
Forward Current:I
F
(mA)
LA-501MD
LA-501MN
LA-501VD
LA-501VN
10.00
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
1.4
1.2
1
0.8
0.6
0.4
-25 -15 -5
I
F
peak Max.
Ratio of Maximum Tolerable peak
I
F
Max.
Current to Maximum Forward Current
1.6
10
Relative Luminous Intensity
(
100kHz
300Hz
100Hz
30kHz
10kHz
1
5
15 25 35 45 55 65 75
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
120%
100%
80%
60%
40%
20%
0%
-25 -15 -5
Forward Current (%)
5 15 25 35 45 55 65 75 85
Ambient Temperature(°C)
Fig.5 Derating
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Notice
Notes
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ROHM Customer Support System
http://www.rohm.com/contact/
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