ROHM LA

LA-401 D / N Series
LED displays
Single Digit LED Numeric Display
LA-401 D / N Series
zExternal dimensions (Unit : mm)
9.6
(10.16)
0.5
φ1.0
7.0
1.0
5.57
(2.54)
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 common
respectively.
13.0
1.0
10.16
10˚
0.25
3.5Min.
LA-401 D / N series is developed because of the
demand for small single digit LED Numeric 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.
(7.62)
Tolerance are ±0.2 unless otherwise noted:
zSelection guide
Emitting color
Red
Common
Anode
Cathode
LA-401VD
LA-401VN
Yellow
Orange
Red
High brightness High brightness High brightness
Green
Blue
LA-401ED
LA-401EN
LA-401MD
LA-401MN
LA-401BD
LA-401BN
LA-401AD
LA-401AN
zPin assignments
1 +
+ 10
a
2 +
f
b
3 +
5 +
Function
Pin No.
Pin No.
4 +
LA-401XD
LA-401XN
e
+ 9
+ 8
g
+ 7
c
+ 6
d
D.P
zEquivalent circuit (anode common)
COM
1,6
a b c d e f g D.P
10 9 8 5 4 2 3 7
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"
(cathode common)
COM
1,6
a b c d e f g D.P
10 9 8 5 4 2 3 7
Rev.B
1/2
LA-401 D / N Series
LED displays
zAbsolute maximum ratings (Ta=25°C)
Power dissipation
Power dissipation
Forward current
Peak forward current
Reverse voltage
Operating temperature
Storage temperature
Yellow
Orange
Red
High brightness High brightness High brightness
Red
Symbol
Parameter
LA-401VD / VN
320
40
15
60 ∗1
5
PD
PD / seg
IF
IFP
VR
Topr
Tstg
LA-401AD / AN
520
65
25
50 ∗2
5
LA-401ED / EN
LA-401XD / XN
520
520
65
65
25
25
50 ∗2
50 ∗2
5
5
−25 to +75
−30 to +85
Green
Blue
Unit
LA-401MD / MN LA-401BD / BN
480
336
60
42
20
10
60 ∗1
50 ∗2
5
5
mW
mW
mA
mA
V
˚C
˚C
∗1 Pulse width 1ms Duty 1 / 5
∗2 Pulse width 0.1ms Duty 1 / 10
zElectrical characteristics (Ta=25°C)
Parameter
Symbol Conditions
Forward voltage
Reverse current
Peak wavelength
Spectral line half width
VF
IR
λP
∆λ
IF=10mA
VR=3V
IF=10mA
IF=10mA
Red
Orange
Yellow
High brightness High brightness High brightness
Red
Typ. Max.
2.0 2.8
100
−
−
650
−
40
Typ. Max.
2.05 ∗ 2.6 ∗
100
−
626 ∗
−
18 ∗
−
Typ. Max.
2.05∗ 2.6 ∗
100
−
610 ∗
−
17 ∗
−
Green
Blue
Typ. Max. Typ. Max. Typ. Max.
∗
2.05
2.6 ∗ 2.1 2.8 3.6 4.2
100
−
100
−
100
−
∗
589
563
−
470
−
−
15 ∗
40
−
26
−
−
Unit
V
µA
nm
nm
The products are not radiations resistant.
∗Shows the number on the condition of IF=20mA.
zLuminous intensity
Color
λP (nm)
Red
650
High
brightness red
626
High
brightness orange
610
High
brightness yellow
589
Green
563
Blue
470
Type
LA−401VD
LA−401VN
LA−401AD
LA−401AN
LA−401ED
LA−401EN
LA−401XD
LA−401XN
LA−401MD
LA−401MN
LA−401BD
LA−401BN
Min.
Typ.
Unit
5.6
16
mcd
36
90
mcd
36
90
mcd
36
90
mcd
5.6
16
mcd
14
56
mcd
A condition of measurement is IF=10mA.
Rev.B
2/2
Appendix
Notes
No technical content pages of this document may be reproduced in any form or transmitted by any
means without prior permission of ROHM CO.,LTD.
The contents described herein are subject to change without notice. The specifications for the
product described in this document are for reference only. Upon actual use, therefore, please request
that specifications to be separately delivered.
Application circuit diagrams and circuit constants contained herein are shown as examples of standard
use and operation. Please pay careful attention to the peripheral conditions when designing circuits
and deciding upon circuit constants in the set.
Any data, including, but not limited to application circuit diagrams information, described herein
are intended only as illustrations of such devices and not as the specifications for such devices. ROHM
CO.,LTD. disclaims any warranty that any use of such devices shall be free from infringement of any
third party's intellectual property rights or other proprietary rights, and further, assumes no liability of
whatsoever nature in the event of any such infringement, or arising from or connected with or related
to the use of such devices.
Upon the sale of any such devices, other than for buyer's right to use such devices itself, resell or
otherwise dispose of the same, no express or implied right or license to practice or commercially
exploit any intellectual property rights or other proprietary rights owned or controlled by
ROHM CO., LTD. is granted to any such buyer.
Products listed in this document are no antiradiation design.
The products listed in this document are designed to be used with ordinary electronic equipment or devices
(such as audio visual equipment, office-automation equipment, communications devices, electrical
appliances and electronic toys).
Should you intend to use these products with equipment or devices which require an extremely high level of
reliability and the malfunction of with would directly endanger human life (such as medical instruments,
transportation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers and other
safety devices), please be sure to consult with our sales representative in advance.
About Export Control Order in Japan
Products described herein are the objects of controlled goods in Annex 1 (Item 16) of Export Trade Control
Order in Japan.
In case of export from Japan, please confirm if it applies to "objective" criteria or an "informed" (by MITI clause)
on the basis of "catch all controls for Non-Proliferation of Weapons of Mass Destruction.
Appendix1-Rev1.1