LA-301
B
/
L
Series
LED displays
Rev.C 1/4
Single Digit LED Numeric Display
LA-301 B / L Series
LA-301 B / L series is deve loped because of th e 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 8mm, single digit LED
Numeric Disp lay that is p acked by epoxy resin.
zFeatures
1) The height of a letter is 8mm.
2) The light don’t leak from the segment in spite of the
small p ackage.
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˚
7.0
0.5 0
+0.1
0.25 0
+0.1
11.0
8.0 1.0
φ0.8
(2.0)
(8.0)
(5.3)
5.03.8±0.5
4.0
1.0
Tolerance are ±0.3 unless otherwise noted:
zSelection guide
Anode
Cathode
Emitting color
Common Red
LA-301VB
LA-301VL
Red
(High brightness)
LA-301AB
LA-301AL
Orange
(High brightness)
LA-301EB
LA-301EL
Yellow
(High brightness)
LA-301XB
LA-301XL
Green
LA-301MB
LA-301ML
Blue
LA-301BB
LA-301BL
zPin assignment s
Pin No.
1+
2+
3+
4+
5
10
9
8
7
6+
+
+
+
+
+
a
g
d
fb
ec
D.P
FunctionPin No.
1
2
3
4
5
6
7
8
9
10
Segment "a"
Segment "f"
Segment "g"
Segment "e"
Segment "d"
D.P Cathode
D.P Anode
Segment "c"
Common
Segment "b"
zEquivalent circuit (anode common) (cathode common)
COM
97
a
1b
10 c
8d
5e
4f
2g
3D
.P
6
COM
97
a
1b
10 c
8d
5e
4f
2g
3D.P
6
LA-301
B
/
L
Series
LED displays
Rev.C 2/4
zA bsolute maximum ratings (Ta=25°C)
Parameter Unit
mW
mW
mA
mA
V
˚C
˚C
Red
LA-301VB / VL
320
40
15
60
5
Green
LA-301MB / ML
480
60
20
60
5
Blue
LA-301BB / BL
336
42
10
50
5
P
D
P
D
/ seg
I
F
I
FP
V
R
Topr
Tstg −25 to +75
−30 to +85
Power dissipation
Power dissipation
Forward current
Peak forward current
Reverse voltage
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
LA-301AB / AL
520
65
25
50
5
Red
(High brightness)
LA-301EB / EL
520
65
25
50
5
Orange
(High brightness)
LA-301XB / XL
520
65
25
50
5
Yellow
(High brightness)
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
Forward voltage
Reverse current
Peak wavelength
Spectral line half width
Symbol
I
F
=10mA
V
R
=3V
I
F
=10mA
I
F
=10mA
Conditions
The products are not radiations resistant.
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
−
−
∗∗∗
∗∗∗
∗∗ ∗∗ ∗∗
Green Blue
∗ Shows the number on the condition of I
F=20mA.
Yellow
(High brightness)
Red
(High brightness)
Orange
(High brightness)
zLuminous intensity
λ
P
(nm) UnitColor
650
Type
LA-301VB Min.
3.6
Typ.
10 mcd
626 LA-301AB 36 90 mcd
610 LA-301EB 36 90 mcd
589 LA-301XB 36 90 mcd
563 LA-301MB 3.6 10 mcd
470 LA-301BB
LA-301VL
LA-301AL
LA-301EL
LA-301XL
LA-301ML
LA-301BL 14 56 mcd
Red
Red (High brightness)
Orange (High brightness)
Yellow (High brightness)
Green
Blue
A condition of measurement is I
F
=10mA.
LA-301
B
/
L
Series
LED displays
Rev.C 3/4
zElectrical and optical characteristic curve
Fig.1 Forward Current - Forward Voltage
LA-301MB
LA-301ML
LA-301VB
LA-301VL
LA-301BB
LA-301BL
LA-301XB
LA-301XL
LA-301XB
LA-301XL
1 2 3 4 5
Forward Current:IF(mA)
Forward Voltage:VF(V)
Ta=25°C
0.1
100
1
10
LA-301EB
LA-301EL
LA-301AB
LA-301AL
Fig.2
Relative Luminous Intensity - Forward Current
LA-301XB
LA-301XL
LA-301XB
LA-301XL
LA-301EB
LA-301EL
LA-301AB
LA-301AL
LA-301MB
LA-301ML
LA-301VB
LA-301VL
0.01
0.10
1.00
10.00
1 10 100
Relative Luminous Intensity
Forward Current:I
F
(mA)
LA-301BB
LA-301BL
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-301MB
LA-301ML
LA-301VB
LA-301VL
LA-301BB
LA-301BL
LA-301XB
LA-301XL
LA-301XB
LA-301XL
LA-301EB
LA-301EL
LA-301AB
LA-301AL
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-301BB
LA-301BL
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-301XB
LA-301XL
LA-301XB
LA-301XL
LA-301EB
LA-301EL
LA-301AB
LA-301AL
Fig.6
Ratio of Maximum Tolerable Peak Current - Pulse Duration
( ΙΙΙ )
LA-301MB
LA-301ML
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-301
B
/
L
Series
LED displays
Rev.C 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-301VB
LA-301VL
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
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.
Appendix1-Rev2.0
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www.rohm.com
Copyright © 2008 ROHM CO.,LTD.
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 which 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.
It is our top priority to supply products with the utmost quality and reliability. However, there is always a chance
of failure due to unexpected factors. Therefore, please take into account the derating characteristics and allow
for sufficient safety features, such as extra margin, anti-flammability, and fail-safe measures when designing in
order to prevent possible accidents that may result in bodily harm or fire caused by component failure. ROHM
cannot be held responsible for any damages arising from the use of the products under conditions out of the
range of the specifications or due to non-compliance with the NOTES specified in this catalog.
21 Saiin Mizosaki-cho, Ukyo-ku, Kyoto 615-8585, Japan TEL : +81-75-311-2121
FAX : +81-75-315-0172
Appendix
