ROHM LA

LA-301 B / L Series
LED displays
Single Digit LED Numeric Display
LA-301 B / L Series
zDimensions (Unit : mm)
7.0
10˚
(2.0)
φ0.8
5.0
1.0
4.0
0.5 +0.1
0
8.0
11.0
zFeatures
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.
(8.0)
1.0
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.
3.8±0.5
0.25 +0.1
0
(5.3)
Tolerance are ±0.3 unless otherwise noted:
zSelection guide
Emitting color
Red
Common
Anode
Cathode
Red
Orange
Yellow
(High brightness) (High brightness) (High brightness)
LA-301VB
LA-301VL
LA-301AB
LA-301AL
zPin assignments
1 +
1
2
3
4
5
6
7
8
9
10
+ 10
a
2 +
f
b
3 +
5 +
LA-301XB
LA-301XL
Pin No.
Pin No.
4 +
LA-301EB
LA-301EL
e
+ 9
+ 8
g
+ 7
c
+ 6
d
D.P
zEquivalent circuit (anode common)
Green
Blue
LA-301MB
LA-301ML
LA-301BB
LA-301BL
Function
Segment "a"
Segment "f"
Segment "g"
Segment "e"
Segment "d"
D.P Cathode
D.P Anode
Segment "c"
Common
Segment "b"
(cathode common)
COM
9
7
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.C
1/4
LA-301 B / L Series
LED displays
zAbsolute maximum ratings (Ta=25°C)
Symbol
Parameter
PD
PD / seg
IF
IFP
VR
Topr
Tstg
Power dissipation
Power dissipation
Forward current
Peak forward current
Reverse voltage
Operating temperature
Storage temperature
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
60 ∗1
50 ∗2
60 ∗1
50 ∗2
50 ∗2
50 ∗2
5
5
5
5
5
5
−25 to +75
−30 to +85
Red
Unit
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
IF=10mA
VR=3V
IF=10mA
IF=10mA
VF
IR
λP
∆λ
Orange
Yellow
Red
(High brightness) (High brightness) (High brightness)
Typ. Max. Typ.
Max.
Typ.
Max.
Typ.
Max.
2.0 2.8
2.05 ∗
2.6 ∗ 2.05 ∗ 2.6 ∗ 2.05 ∗
2.6 ∗
100
100
100
100
−
−
−
−
650
626 ∗
610 ∗
589 ∗
−
−
−
−
40
18 ∗
17 ∗
15 ∗
−
−
−
−
Red
Green
Blue
Typ. Max. Typ. Max.
2.1
2.8
3.6
4.2
100
100
−
−
563
470
−
−
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
Red (High brightness)
626
Orange (High brightness)
610
Yellow (High brightness)
589
Green
563
Blue
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.
Typ.
Unit
3.6
10
mcd
36
90
mcd
36
90
mcd
36
90
mcd
3.6
10
mcd
14
56
mcd
A condition of measurement is IF=10mA.
Rev.C
2/4
LA-301 B / L Series
LED displays
zElectrical and optical characteristic curve
10.00
Ta=25°C
LA-301BB
LA-301BL
LA-301XB
LA-301XL
LA-301EB
LA-301EL
LA-301AB
LA-301AL
LA-301MB
LA-301ML
LA-301VB
LA-301VL
10
1
4
0.10
0.01
5
1
10
Fig.2 Relative Luminous Intensity - Forward Current
1.2
1
0.8
0.6
15 25 35 45 55 65 75
1
1
)
100Hz
10000
10000
10
30Hz
100Hz
300Hz
30kHz
100kHz
(
LA-301MB
LA-301ML
300kHz
100Hz
200Hz
500Hz
2kHz
5kHz
10kHz
20kHz
50kHz
1kHz
1000
IF peak Max.
Ratio of Maximum Tolerable peak
IF Max.
Current to Maximum Forward Current
)
(
IF peak Max.
Ratio of Maximum Tolerance Peak
IF Max.
Current to Maximum Tolerance DC Current
LA-301XB
LA-301XL
LA-301EB
LA-301EL
LA-301AB
LA-301AL
100
1000
Fig.4 Ratio of Maximum Tolerable Peak Current - Pulse Duration ( Ι )
10
10
100
Pulse Duration tw(µs)
Fig.3 Relative Luminous Intensity - Case Temperature
1
200Hz
10
Case Temparature (°C)
1
500Hz
2kHz
5kHz
5
1kHz
5
LA-301BB
LA-301BL
10kHz
Relative Luminous Intensity
1.4
10
20kHz
LA-301BB
LA-301BL
LA-301XB
LA-301XL
LA-301EB
LA-301EL
LA-301AB
LA-301AL
LA-301MB
LA-301ML
LA-301VB
LA-301VL
50kHz
IF=10mA
(
1.6
IF peak Max.
Ratio of Maximum Tolerance Peak
IF Max.
Current to Maximum Tolerance DC Current
)
Fig.1 Forward Current - Forward Voltage
0.4
-25 -15 -5
100
Forward Current:IF(mA)
Forward Voltage:VF(V)
3kHz
3
LA-301BB
LA-301BL
LA-301XB
LA-301XL
LA-301EB
LA-301EL
LA-301AB
LA-301AL
LA-301MB
LA-301ML
LA-301VB
LA-301VL
1.00
1kHz
2
Ta=25°C
10kHz
0.1 1
Relative Luminous Intensity
Forward Current:IF(mA)
100
1
1
10
100
1000
10000
100000
Pulse Duration : Tw (µs)
Pulse Duration : tw(µs)
Fig.5 Ratio of Maximum Tolerable Peak Current - Pulse Duration ( ΙΙ )
Fig.6 Ratio of Maximum Tolerable Peak Current - Pulse Duration ( ΙΙΙ )
Rev.C
3/4
LA-301 B / L Series
120%
10
100%
Forward Current (%)
100Hz
200Hz
500Hz
1kHz
2kHz
5kHz
10kHz
50kHz
20kHz
LA-301VB
LA-301VL
(
IF peak Max.
Ratio of Maximum Tolerable peak
IF Max.
Current to Maximum Forward Current
)
LED displays
80%
60%
40%
20%
1
1
10
100
1000
10000
Pulse Duration : tw(µs)
Fig.7 Ratio of Maximum Tolerable Peak Current - Pulse Duration ( ΙV )
0%
-25 -15 -5
5 15 25 35 45 55 65 75 85
Ambient Temperature(°C)
Fig.8 Derating
Rev.C
4/4
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 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.
Thank you for your accessing to ROHM product informations.
More detail product informations and catalogs are available, please contact your nearest sales office.
ROHM Customer Support System
www.rohm.com
Copyright © 2008 ROHM CO.,LTD.
THE AMERICAS / EUROPE / ASIA / JAPAN
Contact us : [email protected] rohm.co. jp
21 Saiin Mizosaki-cho, Ukyo-ku, Kyoto 615-8585, Japan
TEL : +81-75-311-2121
FAX : +81-75-315-0172
Appendix1-Rev2.0