0.54"Alphanumeric LED Displays
LTP-3784/3786 Series
Features
0.54 inch (13.8mm) digit height.
Continuous uniform segments.
Choices of five bright colors-AlGaAs red/bright red/
green/yellow/red orange.
Low power requirements.
Excellent character appearance.
Wide viewing angle.
Solid state reliability.
Common anode or common cathode models.
Categorized for luminous intensity.
Easy mounting on P.C. board.
Package Dimensions
Description
The LTP-3784/3786 series are 0.54 inch (13.8mm) height
14-segment dual digit alphanumeric displays. The Dis-
plays have gray face and white segment.
The AlGaAs red alphanumeric display are designed for
applications requiring low power consumption. They
are tested and selected for their 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 and red orange 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 (0.010") unless other-
wise noted.
Devices
Part No.
AlGaAs Red Bright Red
Green
Yellow
Red
Orange
Description
Duplex Common Cathode, Rt. Hand Decimal
Duplex Common Anode, Rt. Hand Decimal
Internal
Circuit
Diagram
A
B
LTP-3784WC-01 LTP-3784P-01 LTP-3784G-01 LTP-3784Y-01 LTP-3784E-01
LTP-3786WC-03 LTP-3786P-03 LTP-3786G-03 LTP-3786Y-03 LTP-3786E-03
Internal Circuit Diagrams
A. LTP-3784
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B. LTP-3786
Pin Connection
Connection
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
A. LTP-3784
Anode E
Anode M
No Connection
Anode L
Anode K
Anode J
Anode D
Anode D.P.
Anode C
Anode B
Common Cathode, Character 2
Anode A
Anode N
Anode H
Anode G
Common Cathode, Character 1
Anode P
Anode F
B. LTP-3786
Cathode E
Cathode M
No Connection
Cathode L
Cathode K
Cathode J
Cathode D
Cathode D.P.
Cathode C
Cathode B
Common Anode, Character 2
Cathode A
Cathode N
Cathode H
Cathode G
Common Anode, Character 1
Cathode P
Cathode F
Absolute Maximum Rating at Ta=25
Parameter
Average Power Dissipation Per Segment
Peak Forward Current Per Segment
(1/10 Duty Cycle, 0.1 ms Pulse Width)
Average Forward Current Per Segment
Derating Linear from 25
Per Segment
Reverse Voltage Per Segment
Operating Temperature Range
Storage Temperature Range
Solder Temperature 1/16 Inch Below Seating Plane for 3 Seconds at 260
125
30
0.4
5
60
15
0.2
5
-35
-35
100
25
0.33
5
to +85
to +85
80
20
0.27
5
100
25
0.33
5
mA
mA
mA/
V
AlGaAs
Red
75
Bright Red
40
Green
75
Yellow
60
Red
Orange
75
Unit
mW
9-185
DISPLAYS
Electrical / Optical Characteristics at Ta=25
LTP-3784WC-01/3786WC-03
Parameter
Average Luminous Intensity
Peak Emission Wavelength
Spectral Line Half-Width
Dominant Wavelength
Forward Voltage, and Segment
Reverse Current, and Segment
Luminous Intensity Matching Ratio
d
V
F
I
R
I
V
-m
Symbol
I
V
P
Min.
200
Typ.
520
3750
660
35
638
1.6
1.7
1.8
Max.
Unit
cd
nm
nm
nm
Test 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
LTP-3784P-01/3786P-03
Parameter
Average Luminous Intensity
Peak Emission Wavelength
Spectral Line Half-Width
Dominant Wavelength
Forward Voltage, and Segment or D.P.
Reverse Current, and Segment or D.P.
Luminous Intensity Matching Ratio
d
V
F
I
R
I
V
-m
Symbol
I
V
P
Min.
320
Typ.
650
697
90
657
2.1
Max.
Unit
cd
nm
nm
nm
Test 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
LTP-3784G-01/3786G-03
Parameter
Average Luminous Intensity
Peak Emission Wavelength
Spectral Line Half-Width
Dominant Wavelength
Forward Voltage, and Segment or D.P.
Reverse Current, and Segment or D.P.
Luminous Intensity Matching Ratio
d
V
F
I
R
I
V
-m
Symbol
I
V
P
Min.
500
Typ.
1800
565
30
569
2.1
Max.
Unit
cd
nm
nm
nm
Test 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
LTP-3784Y-01/3786Y-03
Parameter
Average Luminous Intensity
Peak Emission Wavelength
Spectral Line Half-Width
Dominant Wavelength
Forward Voltage, and Segment or D.P.
Reverse Current, and Segment or D.P.
Luminous Intensity Matching Ratio
d
V
F
I
R
I
V
-m
Symbol
I
V
P
Min.
500
Typ.
1800
585
35
588
2.1
Max.
Unit
cd
nm
nm
nm
Test 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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LTP-3784E-01/3786E-03
Parameter
Average Luminous Intensity
Peak Emission Wavelength
Spectral Line Half-Width
Dominant Wavelength
Forward Voltage, and Segment or D.P.
Reverse Current, and Segment or D.P.
Luminous Intensity Matching Ratio
d
V
F
I
R
I
V
-m
Symbol
I
V
P
Min.
500
Typ.
1800
630
40
621
2.0
Max.
Unit
cd
nm
nm
nm
Test
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 combination that appoximates the CIE (Commision
Internationale De L'Eclairage)eye-response curve.
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DISPLAYS
Typical Electrical / Optical Characteristic Curves
(25 Ambient Temperature Unless Otherwise Noted)
详细参数
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