9-120
0.3" Single Digit
Numeric LED Displays
LTS-310A Series
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.
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.
Package Dimensions
A.LTS-312A/313A/315A
Notes:All dimensions are in millimeters (inches).
Tolerance: 0.25mm (0.01") unless otherwise noted.
Devices
Part No. Description Package
Dimension Internal
Circuit
Diagram
Hi.-Eff
Red Common Anode,
Rt. and Lt. Hand Decimal
Common Cathode,
Rt. Hand Decimal
Common Cathode,
Rt. Hand Decimal
312AWC
313AWC
315AWC
312AG
313AG
315AG
312AY
313AY
315AY
312AE
313AE
315AE
A
A
A
B
C
D
312AHR
313AHR
315AHR
Bright
Red
AlGaAs
Red YellowGreen Red
Orange
312AP
313AP
315AP
14-310a.p65 2000/7/17, ¤W¤È 11:43Page 120 Adobe PageMaker 6.5C/Win
9-121
DISPLAYS
Pin No. Connection
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
Internal Circuit Diagrams
A.LTS-312A
C.LTS-315A
Pin Connection
Absolute Maximum Rating at Ta=25
Unit
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
Parameter Bright
Red Green Yellow Red
Orange
40
60
15
0.2
5
75
100
25
0.33
5
60
80
20
0.27
5
75
100
25
0.33
5
A.LTS-312A B.LTS-313A C.LTS-315A
B.LTS-313A
Hi. -Eff. Red
75
100
25
0.33
5
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
Common Cathode *2
Anode F
Anode G
Anode E
Anode D
Common Cathode *2
Anode D.P.
Anode C
Anode B
Anode A
-
-
-
-
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. 3.Pin 4 & 12 are internally connected.
2.Pin 1 & 6 are internally connected. 4.Pin 1 & 3 are internally connected.
mW
mA
mA
mA/
V
-35 to +85
-35 to +85
AlGaAs
Red
75
125
30
0.4
5
14-310a.p65 2000/7/17, ¤W¤È 11:43Page 121 Adobe PageMaker 6.5C/Win
9-122
LTS-312AP/313AP/315AP
Parameter Symbol Min. Typ. Max. Unit Tset Condition
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
IV
P
d
VF
IR
IV-m
340 750
697
90
657
2.1 2.6
100
2:1
cd
nm
nm
nm
VA
IF=10mA
IF=20mA
IF=20mA
IF=20mA
IF=20mA
VR=5V
IF=10mA
Parameter Symbol Min. Typ. Max. Unit Tset Condition
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
IV
P
d
VF
IR
IV-m
870 2000
565
30
569
2.1 2.6
100
2:1
cd
nm
nm
nm
VA
IF=10mA
IF=20mA
IF=20mA
IF=20mA
IF=20mA
VR=5V
IF=10mA
Parameter Symbol Min. Typ. Max. Unit Tset Condition
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
IV
P
d
VF
IR
IV-m
870 2000
585
35
588
2.1 2.6
100
2:1
cd
nm
nm
nm
VA
IF=10mA
IF=20mA
IF=20mA
IF=20mA
IF=20mA
VR=5V
IF=10mA
Parameter Symbol Min. Typ. Max. Unit Tset Condition
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
IV
P
d
VF
IR
IV-m
870 2000
630
40
621
2.0 2.6
100
2:1
cd
nm
nm
nm
VA
IF=10mA
IF=20mA
IF=20mA
IF=20mA
IF=20mA
VR=5V
IF=10mA
Electrical/Optical Characteristics at Ta=25
LTS-312AWC/313AWC/315AWC
LTS-312AG/313AG/315AG
LTS-312AY/313AY/315AY
LTS-312AE/313AE/315AE
Parameter Symbol Min. Typ. Max. Unit Tset Condition
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
IV
P
d
VF
IR
IV-m
200 600
3100
660
35
638
1.6
1.7
1.8 2.4
100
2.1
cd
nm
nm
nm
V
A
IF=1mA
IF=5mA
IF=20mA
IF=20mA
IF=20mA
IF=1mA
IF=5mA
IF=20mA
VR=5V
IF=1mA
14-310a.p65 2000/7/17, ¤W¤È 11:43Page 122 Adobe PageMaker 6.5C/Win
9-123
DISPLAYS
Parameter Symbol Min. Typ. Max. Unit Tset Condition
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
IV
P
d
VF
IR
IV-m
870 2000
635
40
623
2.0 2.6
100
2:1
cd
nm
nm
nm
VA
IF=10mA
IF=20mA
IF=20mA
IF=20mA
IF=20mA
VR=5V
IF=10mA
Note : Luminous intensity is measured with a light sensor and filter combiuation that approximates the CIE (Commision
Internationale De L’Eclairage) eye-response curve.
LTS-312AHR/313AHR/315AHR
Typical Electrical/Optical Characteristic Curves
(25 Ambient Temperature Unless Otherwise Noted)
14-310a.p65 2000/7/17, ¤W¤È 11:44Page 123 Adobe PageMaker 6.5C/Win