LA-301 B / L Series
LED displays
Single Digit LED Numeric Display
LA-301 B / L Series
LA-301 B / L 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 8mm, single digit LED
Numeric Display that is packed by epoxy resin.
External dimensions
(Unit : mm)
7.0
10˚
1.0
Features
1) The height of a letter is 8mm.
2) The light don’t leak from the segment in spite of the
small package.
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.
0.5
+0.1
0
1.0
4.0
φ0.8
(5.3)
Selection guide
Emitting color
Common
Anode
Cathode
Red
LA-301VB
LA-301VL
Orange
Yellow
Red
(High brightness)
(High brightness) (High brightness)
LA-301AB
LA-301AL
3.8±0.5
0.25
+0.1
0
5.0
Tolerance are
±0.3
unless otherwise noted:
Green
LA-301MB
LA-301ML
Blue
LA-301BB
LA-301BL
LA-301EB
LA-301EL
LA-301XB
LA-301XL
Pin assignments
Pin No.
1
+
2
+
3
+
4
+
5
+
e
d
D.P
f
g
c
a
b
+
10
+
9
+
8
+
7
+
6
Pin No.
1
2
3
4
5
6
7
8
9
10
Function
Segment "a"
Segment "f"
Segment "g"
Segment "e"
Segment "d"
D.P Cathode
D.P Anode
Segment "c"
Common
Segment "b"
Equivalent circuit (anode common)
COM
9
7
(cathode common)
COM
9
7
a b c d e f g
1 10 8 5 4 2 3
D.P
6
a b c d e f g
1 10 8 5 4 2 3
D.P
6
Rev.B
(2.0)
(8.0)
11.0
8.0
1/2
LA-301 B / L Series
LED displays
Absolute maximum ratings
(Ta=25°C)
Parameter
Power dissipation
Power dissipation
Forward current
Peak forward current
Reverse voltage
Operating temperature
Storage temperature
∗1
Pulse width 1ms Duty 1 / 5
∗2
Pulse width 0.1ms Duty 1 / 10
Symbol
P
D
P
D
/ seg
I
F
I
FP
V
R
Topr
Tstg
Orange
Yellow
Red
Blue
Green
(High brightness)
(High brightness) (High brightness)
LA-301VB / VL LA-301AB / AL
LA-301EB / EL
LA-301XB / XL LA-301MB / ML LA-301BB / BL
480
336
320
520
520
520
60
42
40
65
65
65
20
10
15
25
25
25
∗1
∗2
∗2
∗2
∗1
60
50
∗2
60
50
50
50
5
5
5
5
5
5
−25
to
+75
−30
to
+85
Red
Unit
mW
mW
mA
mA
V
˚C
˚C
Electrical characteristics
(Ta=25°C)
Parameter
Forward voltage
Reverse current
Peak wavelength
Spectral line half width
Symbol
Conditions
V
F
I
R
λ
P
∆λ
I
F
=10mA
V
R
=3V
I
F
=10mA
I
F
=10mA
Orange
Yellow
Red
(High brightness)
(High brightness) (High brightness)
Typ.
Max.
Typ.
Max.
Max.
Typ. Max.
Typ.
∗
∗
∗
∗
∗
2.05
2.6
∗
2.05
2.6
2.05
2.6
2.0 2.8
100
100
100
100
−
−
−
−
∗
∗
∗
589
610
626
650
−
−
−
−
15
∗
17
∗
18
∗
40
−
−
−
−
Red
Green
Blue
Unit
Typ. Max.
Typ. Max.
3.6
4.2
2.1
2.8
100
100
−
−
470
563
−
−
26
40
−
−
V
µA
nm
nm
∗
Shows the number on the condition of I
F
=20mA.
The products are not radiations resistant.
Luminous intensity
Color
Red
Red (High brightness)
Orange (High brightness)
Yellow (High brightness)
Green
Blue
λ
P
(nm)
650
626
610
589
563
470
Type
LA-301VB
LA-301VL
LA-301AB
LA-301AL
LA-301EB
LA-301EL
LA-301XB
LA-301XL
LA-301MB
LA-301ML
LA-301BB
LA-301BL
Min.
3.6
Typ.
10
Unit
mcd
36
90
mcd
36
90
mcd
36
90
mcd
3.6
10
mcd
14
56
mcd
A condition of measurement is I
F
=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
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