ROHM LAP

Single Digit LED Numeric Display
LAP-401 D / N Series
LAP-401 D / N series are the numberical display units
featuring ROHM’s in-house 4-element(AlGaInP)
high-brightness LED dies.Their luminous intensity is top
class in the industry while degradation is considerably
slow, which helps to keep illumination vividness almost
unchanged and the image of sets high over a long period
of time.
Dimensions (Unit : mm)
9.6
(10.16)
0.5
φ1.0
0.25
(7.62)
3.5Min.
7.0
1.0
5.57
(2.54)
Features
1) 10.16mm for letter height, single-line LED numerical
displays.
2) About 10 times more luminous intensity than the
conventional products by use of 4-element LED dies.
(in case of orange color)
3)The same luminous intensity as the conventional
products at their 1/10 of current, which contributes lots
to energy-saving of sets.
4) Light-leakage from segments probable with the small
display packages is very rare.
5)Both anode common type and cathode common type
are available in lineup for each color.
13.0
1.0
10.16
10˚
Tolerance are ±0.2 unless otherwise noted:
Selection guide
Emitting color
Common
Anode
Cathode
Red
Orange
Yellow
Green
LAP-401VD
LAP-401VN
LAP-401DD
LAP-401DN
LAP-401YD
LAP-401YN
LAP-401MD
LAP-401MN
Pin assignments
Function
Pin No.
Pin No.
1 +
f
b
3 +
4 +
+ 10
a
2 +
+ 8
g
e
5 +
+ 9
+ 7
c
+ 6
d
D.P
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"
Inner circuit (anode common)
COM
1,6
a b c d e f g D.P
10 9 8 5 4 2 3 7
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c 2010 ROHM Co., Ltd. All rights reserved.
○
COM
1,6
a b c d e f g D.P
10 9 8 5 4 2 3 7
1/3
2010.12 - Rev.A
LAP-401 D / N Series
Data Sheet
Absolute maximum ratings (Ta=25C)
Parameter
Power dissipation
Power dissipation
Forward current
Peak forward current
Reverse voltage
Operating temperature
Storage temperature
Orange
Red
Symbol
PD
PD / seg
IF
IFP
VR
Topr
Tstg
Yellow
Green
Unit
LAP-401VD / VN LAP-401DD / DN LAP-401YD / YN LAP-401MD / MN
448
448
448
448
56
56
56
56
20
20
20
20
60 ∗1
60 ∗1
60 ∗1
60 ∗1
5
5
5
5
−25 to +75
−30 to +85
mW
mW
mA
mA
V
˚C
˚C
∗1 Pulse width 1ms Duty 1 / 5
Electrical characteristics (Ta=25C)
Forward voltage
Reverse current
Peak wavelength
Spectral line half width
IF=10mA
VR=3V
IF=10mA
IF=10mA
VF
IR
λP
Δλ
Orange
Red
Conditions
Symbol
Parameter
Typ.
1.9
−
650
20
Max.
2.6
100
−
−
Typ.
1.9
−
605
20
Max.
2.6
100
−
−
Yellow
Typ.
1.9
−
590
20
Max.
2.6
100
−
−
Green
Typ.
1.9
−
572
20
Max.
2.6
100
−
−
Unit
V
μA
nm
nm
The products are not radiations resistant.
Luminous intensity
Color
λP (nm)
Red
650
Orange
605
Yellow
590
Green
572
Type
LAP−401VD
LAP−401VN
LAP−401DD
LAP−401DN
LAP−401YD
LAP−401YN
LAP−401MD
LAP−401MN
Min.
Typ.
Unit
14
36
mcd
56
250
mcd
90
450
mcd
36
100
mcd
A condition of measurement is IF=10mA.
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c 2010 ROHM Co., Ltd. All rights reserved.
○
2/3
2010.12 - Rev.A
LAP-401 D / N Series
Data Sheet
Electrical and optical characteristic curve
100
10
Relative Luminous Intensity
10
1
0.1
1
0.1
0.01
2.4
1
Fig.1 Forward Current - Forward Voltage
1.4
1.2
1
0.8
0.6
20
40
60
80
10
Ta=25℃
50kHz
IF=10mA
0
100
Fig.2 Relative Luminous Intensity Forward Current
Ratio of Maximum Tolerance Peak Current IF PEAK MAX.
IF MAX.
to Maximum Tolerance DC Cerrent
Relative Luminous Intensity
1.6
0.4
-20
10
Forward Current(mA)
Forward Voltage : VF(V)
100Hz
2.2
200Hz
2
1kHz
1.8
500Hz
1.6
5kHz
1.4
2kHz
1.2
10kHz
1
20kHz
Forward Current : IF（mA)
Ta=25℃
1
1
10
100
1000
10000
Pulse Duration : Tw (μs)
Case　Temperature : Tc(℃)
Fig.3 Relative Luminous Intensity Case Temperature(℃)
Fig.4 Ratio of Maximum Tolerable Peak CurrentPulse Duration
120
Forward Current（%)
100
80
60
40
20
0
-25
-15
-5
5
15
25
35
45
55
65
75
85
Ambient Temperature（℃）
Fig.5 Derating
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c 2010 ROHM Co., Ltd. All rights reserved.
○
3/3
2010.12 - Rev.A
Notice
Notes
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consent of ROHM Co.,Ltd.
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 responsibility 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 specified in this document 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
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shall bear no responsibility whatsoever for your use of any Product outside of the prescribed
scope or not in accordance with the instruction manual.
The Products are not designed or manufactured to be used with any equipment, device or
system which requires an extremely high level of reliability the failure or malfunction of which
may result in a direct threat to human life or create a risk of human injury (such as a medical
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R1010A