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FEATURES
0.39 inch (10.0 mm) DIGIT HEIGHT
CONTINUOUS UNIFORM SEGMENTS
LOW POWER REQUIREMENT
EXCELLENT CHARACTERS APPEARANCE
HIGH BRIGHTNESS & HIGH CONTRAST
WIDE VIEWING ANGLE
SOLID STATE RELIABILITY
CATEGORIZED FOR LUMINOUS INTENSITY
DESCRIPTION
The LTS-4812SKR-P is a 0.39 inch (10.0 mm) digit height single digit
SMD display. This device utilizes AllnGaP SUPER RED LED chips
which are made from Aluminum Indium Gallium Phosphide on
GaAs ,.The display has gray face and white segments.
DEVICE
PART NO. DESCRIPTION
AllnGaP SUPER RED
LTS-4812SKR-P
Common Anode
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PACKAGE DIMENSIONS
NOTES: All dimensions are in millimeters. Tolerances are ± 0.25-mm (0.01“) unless otherwise noted.
INTERNAL CIRCUIT DIAGRAM
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PIN CONNECTION
No.
CONNECTION
1 CATHODE E
2 CATHODE D
3 COMMON ANODE
4 CATHODE C
5 CATHODE D.P.
6 CATHODE B
7 CATHODE A
8 COMMON ANODE
9 CATHODE F
10 CATHODE G
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ABSOLUTE MAXIMUM RATING AT Ta = 25
o
C
PARAMETER MAXIMUM RATING UNIT
Power Dissipation Per Segment 75 mW
Peak Forward Current Per Segment
(Frequency 1Khz,10% duty cycle ) 90 mA
Continuous Forward Current Per Segment
2.6 mA
Forword Current Derating from 25
0
C 0.28 mA/
0
C
Reverse Voltage Per Segment 5 V
Operating Temperature Range -25
0
C to +105
0
C
Storage Temperature Range -25
0
C to +105
0
C
Soldering Comditions: 1/16 inch Below Seating Plane for 3 Seconds at 260
0
C
ELECTRICAL / OPTICAL CHARACTERISTICS AT Ta = 25
o
C
PARAMETER SYMBOL
MIN.
TYP.
MAX.
UNIT
TEST CONDITION
Average Luminous Intensity
Per Segment I
V
17.5
37.8
cd I
F
=20mA
Peak Emission Wavelength λp 639
Nm
I
F
=20mA
Spectral Line Half-Width ∆λ 20 Nm
I
F
=20mA
Dominant Wavelength λd 631
Nm
I
F
=20mA
Forward Voltage Per Segment V
F
2.0 2.4 V I
F
=20mA
Reverse Current Per Segment I
R
100
µA V
R
=5V
Luminous Intensity Matching Ratio
I
V
-m 2:1 I
F
=20mA
Note:Luminous intensity is measured with a light sensor and filter combination that
approximates the CIE (Commision Internationale De L’Eclairage) eye-response curve.
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TYPICAL ELECTRICAL / OPTICAL CHARACTERISTIC CURVES
(25
o
C Ambient Temperature Unless Otherwise Noted)
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SMT SOLDERING INSTRUCTION
(Number of reflow process shall be less than 2 times, and cooling process to normal temperature is
required between the first and the second soldering process)
0
50
100
150
200
250
300
50 100 150 200 250
2 minutes Min.
100~110°C
PEAK 250~260°C, 3~5 sec.
TIME (SECONDS)
TEMPERATURE (CELSIUS)
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RECOMMENDED SOLDERING PATTERN ( UNIT : mm )
PACKING REEL DIMENSIONS
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TAPE & REEL DIMENSIONS
(UNIT:mm)
TAPE
