Rohm LA-101VK High efficiency, single-digit numeric display Datasheet

LA-101AK Series
LED displays
High efficiency, single-digit numeric
displays
LA-101AK Series
zDimensions (Unit : mm)
24.0±0.2
10˚
2.5
14.1
(30.5)
10.5±0.2
φ3.2
φ0.5
(2.54)
(10.16)
3.5Min.
zFeatures
1) Height of character: 25.4 mm
2) Dimensions: 24 x 34 x 10.5 mm
3) A common anode configuration and a common
cathode configuration are available for each color.
4) The package surface is painted black and the
segments are colored the display color.
5) High luminance, clear display.
25.4
34.0±0.2
2.5
The LA-101AK series are LED numerical displays
designed to allow use even in bright locations. The
height of the character is 25.4 mm, and two colors are
available: red and green. These displays are designed
for use in large numerical displays.
Tolerances are ±0.3 unless otherwise noted :
zSelection guide
Emitting color
Red
Green
Anode
LA-101VA
LA-101MA
Cathode
LA-101VK
LA-101MK
Common
zPin assignments
10 9 8 7 6
+ + + + +
a
Pin No.
f
b
g
e
+
Pin No. 1
c
d
D.P
+ + + +
2 3 4 5
1
2
3
4
5
6
7
8
9
10
Function
Segment "e"
Segment "d"
Common
Segment "c"
D.P
Segment "b"
Segment "a"
Common
Segment "f"
Segment "g"
Rev.B
1/3
LA-101AK Series
LED displays
zInternal circuit schematic (example of common cathode)
COM
3,8
a b c d e f g
7 6 4 2 1 9 10
D.P
5
zAbsolute maximum ratings (Ta=25°C)
Parameter
Red
Symbol
Green
Unit
LA-101VA / VK LA-101MA / MK
Power dissipation
PD
640
640
mW
Power dissipation
PD / seg
85 (45)
85 (45)
mW
Forward current
IF
Peak forward current
IFP
15
60∗
20
60∗
mA
Reverse voltage
VR
3
3
mA
V
Operating temperature
Topr
−25 to +75
˚C
Storage temperature
Tstg
−30 to +85
˚C
∗ Pulse width 1ms duty 1 / 5
( ) is D.P value
zElectrical and optical characteristics (Ta=25°C)
Parameter
Red
Symbol Conditions Elements
Min.
VF
Forward voltage
IF=10mA
2
−
1
−
Green
Typ. Max. Min.
1
∗1
4.0∗ 5.6
−
2
2
−
2.0∗ 2.8∗
Typ. Max.
1
∗1
4.2∗ 5.6
2
2.1∗ 2.8∗2
Unit
V
Reverse current
IR
VR=3V
−
−
−
100
−
−
100
µA
Peak wavelength
λP
IF=10mA
−
−
650
−
−
563
−
nm
Spectral line half
width
∆λ
IF=10mA
−
−
40
−
−
40
−
nm
Not designed for radiation resistance.
The forward voltage and reverse current values are the guaranteed values per element.
zLuminous intensity
λP
Color
Red
650
Type
LA-101VA
Min.
Typ.
Max.
Unit
3.6
10
−
mcd
5.6
16
−
mcd
LA-101VK
Green
563
LA-101MA
LA-101MK
Note : Measured at IF=10mA
Rev.B
2/3
LA-101AK Series
LED displays
zElectrical and optical characteristic curves
10.00
Ta=25°C
LA-101MA
LA-101MK
LA-101VA
LA-101VK
10
1
0.1
1
1.5
2
2.5
Relative Luminous Intensity
Forward Current:IF(mA)
100
1.00
0.10
0.01
3
Ta=25°C
1
10
100
Forward Voltage:VF(V)
Forward Current:IF(mA)
Fig.1 Forward Current - Forward Voltage
Fig.2 Relative Luminous Intensity - Forward Current
IF peak Max.
Ratio of Maximum Tolerable peak
IF Max.
Current to Maximum Forward Current
)
1.6
IF=10mA
LA-101MA
LA-101MK
0.8
0.6
0.4
-25 -15 -5
5
15 25 35 45 55 65 75
1
1
10
Case Temparature (°C)
100Hz
300Hz
1kHz
30Hz
10000
100000
120%
100%
Forward Current (%)
100Hz
200Hz
500Hz
1kHz
2kHz
5kHz
50kHz
10kHz
LA-101VA
LA-101VK
20kHz
)
1000
Fig.4 Ratio of Maximum Tolerable Peak Current - Pulse Duration ( Ι )
10
(
100
Pulse Duration : tw(µs)
Fig.3 Relative Luminous Intensity - Case Temperature
IF peak Max.
Ratio of Maximum Tolerable peak
IF Max.
Current to Maximum Forward Current
3kHz
10kHz
30kHz
1
300kHz
1.2
100kHz
(
Relative Luminous Intensity
1.4
10
80%
60%
40%
20%
1
1
10
100
1000
10000
Pulse Duration : tw(µs)
Fig.5 Ratio of Maximum Tolerable Peak Current - Pulse Duration ( ΙΙ )
0%
-25 -15 -5
5 15 25 35 45 55 65 75 85
Ambient Temperature(°C)
Fig.6 Derating
Rev.B
3/3
Appendix
Notes
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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.
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Appendix1-Rev2.0
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