LA-401
D
/
N
Series
LED displays
Rev.D 1/4
Single Digit LED Numeric Display
LA-401 D / N Series
LA-401 D / N series is developed because of the
demand for smal l single digit LED Nu meric Display.
Materials of emission are GaAsP on GaP, AlGalnP GaP
and GaN. This is the height of a letter 10.16mm, single
digit LED Numeric Display that is packed by EPOXY
resin .
zFeatures
1) The height of a letter is 10.16mm.
2) Dimension is 9.6×13.0×7.0mm.
3) The package of surface color is black. Color of
segment is colored in emitting color. (Blue color is only
milky white)
4) Each color has anode common and cathode commo n
respecti vely.
zDimensions (Unit : mm)
10˚
13.0
10.161.0
φ1.0
0.5
(10.16)
0.25
(7.62)
7.03.5Min.
5.57
9.6
1.0
(2.54)
Tolerance are ±0.2 unless otherwise noted:
zSelection guide
Anode
Cathode
Emitting color
Common Red
LA-401VD
LA-401VN
Red
High brightness
LA-401AD
LA-401AN
Orange
High brightness
LA-401ED
LA-401EN
Yellow
High brightness
LA-401XD
LA-401XN
Green
LA-401MD
LA-401MN
Blue
LA-401BD
LA-401BN
zPin assignment s
Pin No.
1+
2+
3+
4+
5
10
9
8
7
6+
+
+
+
+
+
a
g
d
fb
ec
D.P
Function
Pin No.
1
2
3
4
5
6
7
8
9
10
Common
Segment "f"
Segment "g"
Segment "e"
Segment "d"
Common
D.P
Segment "c"
Segment "b"
Segment "a"
zEquivalent circuit (anode common) (cathode common)
COM
1,6
a
10 b
9c
8d
5e
4f
2g
3D.P
7
COM
1,6
a
10 b
9c
8d
5e
4f
2g
3D.P
7
LA-401
D
/
N
Series
LED displays
Rev.D 2/4
zA bsolute maximum ratings (Ta=25°C)
Parameter Red
LA-401VD / VN
Unit
mW
mW
mA
mA
V
˚C
˚C
320
40
15
60
5
Red
High brightness
Yellow
High brightness
LA-401AD / AN
520
65
25
50
5
Orange
High brightness
LA-401ED / EN
520
65
25
50
5
LA-401XD / XN
520
65
25
50
5
LA-401MD / MN
480
60
20
60
5
LA-401BD / BN
336
42
10
50
5
PD
PD / seg
IF
IFP
VR
Topr
Tstg −25 to +75
−30 to +85
Peak forward current
Operating temperature
Storage temperature
Symbol
∗1 Pulse width 1ms Duty 1 / 5
∗2 Pulse width 0.1ms Duty 1 / 10
∗1∗2∗2∗2∗1∗2
Power dissipation
Power dissipation
Forward current
Reverse voltage
Green Blue
zElectrical characteristics (Ta=25°C)
Parameter Red
Typ. Unit
V
µA
nm
nm
2.0
−
650
40
Max.
2.8
100
−
−
V
F
I
R
λ
P
∆λ
Peak wavelength
Spectral line half width
Symbol
I
F
=10mA
V
R
=3V
I
F
=10mA
I
F
=10mA
Conditions Typ.
2.05
−
626
18
Max.
2.6
100
−
−
Typ.
2.05
−
610
17
Max.
2.6
100
−
−
Typ.
2.05
−
589
15
Max.
2.6
100
−
−
Typ.
2.1
−
563
40
Max.
2.8
100
−
−
Typ.
3.6
−
470
26
Max.
4.2
100
−
−
∗∗∗
∗∗∗
∗∗ ∗∗∗∗
Reverse current
The products are not radiations resistant.
∗Shows the number on the condition of I
F
=20mA.
Forward voltage
Red
High brightness
Yellow
High brightness
Orange
High brightness
Green Blue
zLuminous intensity
λ
P
(nm) UnitColor
650
Type
LA−401VD Min.
5.6
Typ.
16 mcd
626 LA−401AD 36 90 mcd
610 LA−401ED 36 90 mcd
589 LA−401XD 36 90 mcd
563 LA−401MD 5.6 16 mcd
470 LA−401BD
LA−401VN
LA−401AN
LA−401EN
LA−401XN
LA−401MN
LA−401BN 14 56 mcd
A condition of measurement is I
F
=10mA.
Red
High
brightness red
High
brightness orange
High
brightness yellow
Green
Blue
LA-401
D
/
N
Series
LED displays
Rev.D 3/4
zElectrical and optical characteristic curves
Fig.1 Forward Current - Forward Voltage
LA-401MD
LA-401MN
LA-401VD
LA-401VN
LA-401BD
LA-401BN
LA-401XD
LA-401XN
1 2 3 4 5
Forward Current:IF(mA)
Forward Voltage:VF(V)
Ta=25°C
0.1
100
1
10
LA-401ED
LA-401EN
LA-401AD
LA-401AN
LA-401XD
LA-401XN
Fig.2
Relative Luminous Intensity - Forward Current
0.01
0.10
1.00
10.00
1 10 100
Relative Luminous Intensity
Forward Current:I
F
(mA)
LA-401XD
LA-401XN
LA-401ED
LA-401EN
LA-401AD
LA-401AN
LA-401MD
LA-401MN
LA-401VD
LA-401VN
LA-401XD
LA-401XN
LA-401BD
LA-401BN
Ta=25°C
Fig.3
Relative Luminous Intensity - Case Temperature
0.4
0.6
1.2
1.4
1.6
Case Temparature (°C)
I
F
=10mA
-25 -15 -5 5 15 25 35 45 55 65 75
Relative Luminous Intensity
0.8
1LA-401MD
LA-401MN
LA-401VD
LA-401VN
LA-401BD
LA-401BN
LA-401XD
LA-401XN
LA-401XD
LA-401XN
LA-401ED
LA-401EN
LA-401AD
LA-401AN
Fig.4
Ratio of Maximum Tolerable Peak Current - Pulse Duration
( Ι )
1
10
1 10 100 1000 10000
5
Pulse Duration tw(µs)
50kHz 10kHz
20kHz 5kHz
1kHz
200Hz
500Hz
100Hz
2kHz
Ratio of Maximum Tolerance Peak
Current to Maximum Tolerance DC Current
( )
IF peak Max.
IF Max.
LA-401BD
LA-401BN
Fig.5
Ratio of Maximum Tolerable Peak Current - Pulse Duration
( ΙΙ )
Ratio of Maximum Tolerance Peak
Current to Maximum Tolerance DC Current
( )
IF peak Max.
IF Max.
1
10
1 10 100 1000 10000
Pulse Duration : Tw (µs)
50kHz
20kHz
10kHz
5kHz
2kHz
1kHz
500Hz
200Hz
100Hz
LA-401XD
LA-401XN
LA-401ED
LA-401EN
LA-401AD
LA-401AN
LA-401XD
LA-401XN
Fig.6
Ratio of Maximum Tolerable Peak Current - Pulse Duration
( ΙΙΙ )
LA-401MB
LA-401ML
1 10 100 1000 10000 100000
Pulse Duration : tw(µs)
30Hz
100Hz
300Hz
1kHz
3kHz
10kHz
30kHz
100kHz
300kHz
Ratio of Maximum Tolerable peak
Current to Maximum Forward Current
( )
I
F
peak Max.
I
F
Max.
1
10
LA-401
D
/
N
Series
LED displays
Rev.D 4/4
Fig.7
Ratio of Maximum Tolerable Peak Current - Pulse Duration
( ΙV )
1
10
1 10 100 1000 10000
Pulse Duration : tw(µs)
100Hz
200Hz
500Hz
1kHz
2kHz
5kHz
10kHz
20kHz
50kHz
Ratio of Maximum Tolerable peak
Current to Maximum Forward Current
( )
IF peak Max.
IF Max.
LA-401VD
LA-401VN
Fig.8 Derating
0%
20%
40%
60%
80%
100%
120%
Forward Current (%)
Ambient Temperature(°C)
-25 -15 -5 5 15 25 35 45 55 65 75 85
Appendix1-Rev3.0
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Appendix
Notes
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The content specified herein is subject to change for improvement without notice.
The content specified herein is for the purpose of introducing ROHM's products (hereinafter "Products"). If you
wish to use any such Product, please be sure to refer to the specifications, which can be obtained from ROHM
upon request.
Examples of application circuits, circuit constants and any other information contained herein illustrate the
standard usage and operations of the Products. The peripheral conditions must be taken into account when
designing circuits for mass production.
Great care was taken in ensuring the accuracy of the information specified in this document. However, should
you incur any damage arising from any inaccuracy or misprint of such information, ROHM shall bear no respon-
sibility for such damage.
The technical information specified herein is intended only to show the typical functions of and examples of
application circuits for the Products. ROHM does not grant you, explicitly or implicitly, any license to use or
exercise intellectual property or other rights held by ROHM and other parties. ROHM shall bear no responsibility
whatsoever for any dispute arising from the use of such technical information.
The Products specified in this document are intended to be used with general-use electronic equipment or
devices (such as audio visual equipment, office-automation equipment, communication devices, electronic
appliances and amusement devices).
The Products are not designed to be radiation tolerant.
While ROHM always makes efforts to enhance the quality and reliability of its Products, a Product may fail or
malfunction for a variety of reasons.
Please be sure to implement in your equipment using the Products safety measures to guard against the
possibility of physical injury, fire or any other damage caused in the event of the failure of any Product, such as
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