0.3" Single Digit
Numeric LED Displays
LTS-310A
Features
0.3 inch (7.62mm) digit height.
Choices of six bright colors-AlGaAs red/bright red/
green/yellow/red orange/high efficiency red.
Low power requirement.
Excellent characters appearance.
Categorized for luminous intensity.
I.C. compatiable.
Easy mounting on P.C. board or socket.
Series
Package Dimensions
A.LTS-312A/313A/315A
Descriptions
The LTS-310A series are 0.3 inch (7.62mm) height
single digit displays. AlGaAs red desplays has gray
face and white segments. Bright red displays has black
face and red segments. Green and yellow displays
have gray face and white segments. Red orange dis-
plays have orange face and orange segments. The
High efficiency red displays have red face and red
segments.
The AlGaAs red seven segment displays are designed
for appleications requiring low power consumption.
They are tested and selected for the excellent low
current characteristics to ensure that the segments are
matched at low current. Drive current as low as 1 mA
per segment is available.
The AlGaAs red series device utilize LED chips which
are made from AlGaAs on a non-transparent GaAs
substrate. The bright red and green series devices uti-
lize LED chips which are made from GaP on a transpar-
ent GaP substrate. The yellow, red orange and high
efficiency red series devices utilize LED chips which
are made from GaAsP on a transparent GaP substrate.
Notes:All dimensions are in millimeters (inches).
Tolerance:
0.25mm (0.01") unless otherwise noted.
Devices
Part No.
AlGaAs
Red
312AWC
313AWC
315AWC
Bright
Red
312AP
313AP
315AP
Red
Green Yellow Orange
312AG
313AG
315AG
312AY
313AY
315AY
312AE
313AE
315AE
Hi.-Eff
Red
312AHR
313AHR
315AHR
Description
Common Anode,
Rt. and Lt. Hand Decimal
Common Cathode,
Rt. Hand Decimal
Common Cathode,
Rt. Hand Decimal
Package
Dimension
A
A
A
Internal
Circuit
Diagram
B
C
D
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Pin Connection
Pin No.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
A.LTS-312A
Cathode A
Cathode F
Common Anode *1
No Pin
No Pin
Cathode L.D.P.
Cathode E
Cathode D
Cathode R.D.P.
Cathode C
Cathode G
No Pin
Cathode B
Common Anode *1
Connection
B.LTS-313A
Common Cathode *2
Anode F
Anode G
Anode E
Anode D
Common Cathode *2
Anode D.P.
Anode C
Anode B
Anode A
-
-
-
-
3.Pin 4 & 12 are internally connected.
4.Pin 1 & 3 are internally connected.
C.LTS-315A
Anode F
Anode G
No Pin
Common Cathode *3
No Pin
Anode E
Anode D
Anode C
Anode D.P.
No Pin
No Pin
Common Cathode *3
Anode B
Anode A
Notes: 1.Pin 3 & 14 are internally connected.
2.Pin 1 & 6 are internally connected.
Internal Circuit Diagrams
A.LTS-312A
B.LTS-313A
C.LTS-315A
Absolute Maximum Rating at Ta=25
Parameter
Power Dissipation Per Segment
Peak Forward Current Per Segment
(1/10 Duty Cycle, 0.1ms Pulse Width)
Continuous Forward Current Per Segment
Derating Linear from 25 Per Segment
Reverse Voltage Per Segment
Operating Temperature Range
Stroage Temperature Range
Solder Temperature 1/16 Inch Below Seating Plane for 3 Seconds at 260
AlGaAs
Red
75
125
30
0.4
5
Bright
Red
40
60
15
0.2
5
Red
Green Yellow Orange
75
100
25
0.33
5
60
80
75
100
Hi. -Eff. Red
75
100
25
0.33
5
Unit
mW
mA
mA
mA/
V
20
25
0.27
0.33
5
5
-35 to +85
-35
to +85
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DISPLAYS
Electrical/Optical Characteristics at Ta=25
LTS-312AWC/313AWC/315AWC
Parameter
Average Luminous Intensity
Peak Emission Wavelength
Spectral Line Half-Width
Dominant Wavelength
Forward Voltage, Per Segment or D.P.
Reverse Current, Per Segment or D.P.
Luminous Intensity Matching Ratio
d
V
F
I
R
I
V
-m
Symbol
I
V
P
Min.
200
Typ.
600
3100
660
35
638
1.6
1.7
1.8
Max.
Unit
cd
nm
nm
nm
Tset Condition
I
F
=1mA
I
F
=5mA
I
F
=20mA
I
F
=20mA
I
F
=20mA
I
F
=1mA
I
F
=5mA
I
F
=20mA
V
R
=5V
I
F
=1mA
2.4
100
2.1
V
A
LTS-312AP/313AP/315AP
Parameter
Average Luminous Intensity
Peak Emission Wavelength
Spectral Line Half-Width
Dominant Wavelength
Forward Voltage, Per Segment or D.P.
Reverse Current, Per Segment or D.P.
Luminous Intensity Matching Ratio
d
V
F
I
R
I
V
-m
Symbol
I
V
P
Min.
340
Typ.
750
697
90
657
2.1
Max.
Unit
cd
nm
nm
nm
Tset Condition
I
F
=10mA
I
F
=20mA
I
F
=20mA
I
F
=20mA
I
F
=20mA
V
R
=5V
I
F
=10mA
2.6
100
2:1
V
A
LTS-312AG/313AG/315AG
Parameter
Average Luminous Intensity
Peak Emission Wavelength
Spectral Line Half-Width
Dominant Wavelength
Forward Voltage, Per Segment or D.P.
Reverse Current, Per Segment
Luminous Intensity Matching Ratio
d
V
F
I
R
I
V
-m
Symbol
I
V
P
Min.
870
Typ.
2000
565
30
569
2.1
Max.
Unit
cd
nm
nm
nm
Tset Condition
I
F
=10mA
I
F
=20mA
I
F
=20mA
I
F
=20mA
I
F
=20mA
V
R
=5V
I
F
=10mA
2.6
100
2:1
V
A
LTS-312AY/313AY/315AY
Parameter
Average Luminous Intensity
Peak Emission Wavelength
Spectral Line Half-Width
Dominant Wavelength
Forward Voltage, Per Segment or D.P.
Reverse Current, Per Segment or D.P.
Luminous Intensity Matching Ratio
d
V
F
I
R
I
V
-m
Symbol
I
V
P
Min.
870
Typ.
2000
585
35
588
2.1
Max.
Unit
cd
nm
nm
nm
Tset Condition
I
F
=10mA
I
F
=20mA
I
F
=20mA
I
F
=20mA
I
F
=20mA
V
R
=5V
I
F
=10mA
2.6
100
2:1
V
A
LTS-312AE/313AE/315AE
Parameter
Average Luminous Intensity
Peak Emission Wavelength
Spectral Line Half-Width
Dominant Wavelength
Forward Voltage, Per Segment or D.P.
Reverse Current, Per Segment or D.P.
Luminous Intensity Matching Ratio
d
V
F
I
R
I
V
-m
Symbol
I
V
P
Min.
870
Typ.
2000
630
40
621
2.0
Max.
Unit
cd
nm
nm
nm
Tset Condition
I
F
=10mA
I
F
=20mA
I
F
=20mA
I
F
=20mA
I
F
=20mA
V
R
=5V
I
F
=10mA
2.6
100
2:1
V
A
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LTS-312AHR/313AHR/315AHR
Parameter
Average Luminous Intensity
Peak Emission Wavelength
Spectral Line Half-Width
Dominant Wavelength
Forward Voltage, Per Segment or D.P.
Reverse Current, Per Segment or D.P.
Luminous Intensity Matching Ratio
d
V
F
I
R
I
V
-m
Symbol
I
V
P
Min.
870
Typ.
2000
635
40
623
2.0
Max.
Unit
cd
nm
nm
nm
Tset Condition
I
F
=10mA
I
F
=20mA
I
F
=20mA
I
F
=20mA
I
F
=20mA
V
R
=5V
I
F
=10mA
2.6
100
2:1
V
A
Note : Luminous intensity is measured with a light sensor and filter combiuation that approximates the CIE (Commision
Internationale De L’Eclairage) eye-response curve.
Typical Electrical/Optical Characteristic Curves
(25 Ambient Temperature Unless Otherwise Noted)
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