LightKey
Datasheet of 0.56 inch Four Digit 7 Segment LED Display
LD5644A/B Series - 0.56 inch Four Digit 7 Segment LED Display
ATTENTION
OBSERVE PRECAUTIONS
FOR HANDLING
ELECTROSTATIC
DISCHARGE
SENSITIVE
DEVICES
Features
14.20 mm (0.56 inch) digit high
Excellent digit appearance
Wide viewing angle
Range of emitted colors
I.C. compatible
Low power consumption
White segment, black face
RoHS compliant
Available options
Alternative emitting luminosity:
Standard or high brightness version
Alternative emitted color
Alternative face and segment color
Alternative font
Both CA and CC versions are available
Cropped terminal pins
Package Dimensions
PIN 1
DI G. 1
DI G. 2
D5
D6
DI G. 3
DI G. 4
A
B
C
D
D4
F G
E
D3
D1
D2
Notes:
1. All dimensions are in millimeters (inches), Tolerance is + 0.25mm(0.01inch)unless other wise noted.
2. Specifications are subject to change without notice.
3. The gap between the reflector and PCB shall not exceed 0.25mm.
SPEC NO: DS10121720
REV: A.4
CHECKED: Emily Zhou
APPROVED: M.H. Lin
PAGE: 1/3
HTTP://WWW.DISPLAY-LEDS.COM
TEL: 0086-574-86322282
DATE: Jul/20/2011
LightKey
Internal Circuit Diagram
LD5644A (Common Cathode)
12
9
Datasheet of 0.56 inch Four Digit 7 Segment LED Display
8
D I G. 1
D I G. 2
DI G. 3
6
DIG. 4
A B C D E F G D1 A B C D E F G D2 D5 D 6 A B C D E F G D3 A B C D E F G D4
11
7
4
2
1
10
5
3
LD5644B (Common Anode)
12
9
8
D I G. 1
D I G. 2
DI G. 3
6
DIG. 4
A B C D E F G D1 A B C D E F G D2 D5 D 6 A B C D E F G D3 A B C D E F G D4
11
7
4
2
1
10
5
3
Selection Guide
Four Digit 7 Segment LED Display, Digit Height:14.20mm(0.56 inch), External Dimensions:
50.50x19.00x8.00mm (L x W x H )
Part No.
Common
Cathode
LD5644AR
LD5644AD
LD5644AO
LD5644AY
LD5644AG
LD5644AUR
LD5644AUO
LD5644AUA
LD5644AUY
LD5644AUG
LD5644APG
LD5644AUB
LD5644AUW
Unit:
Common
Anode
LD5644BR
LD5644BD
LD5644BO
LD5644BY
LD5644BG
LD5644BUR
LD5644BUO
LD5644BUA
LD5644BUY
LD5644BUG
LD5644BPG
LD5644BUB
LD5644BUW
\
Material
GaAlAs
GaAlAs
GaAsP
GaAsP
GaP
AlGaInP
AlGaInP
AlGaInP
AlGaInP
AlGaInP
InGaN
InGaN
InGaN
\
Chip
Color
Super Red
Hi-Red
Orange
Yellow
Green
Ultra Red
Ultra Orange
Ultra Amber
Ultra Yellow
Ultra Green
Pure Green
Ultra Blue
Ultra White
\
WLD
640
640
625
588
568
640
625
605
595
573
525
470
\
nm
I
V
@I
F
=20mA
One Seg
Min.
8
18
7
8
7
30
45
30
30
30
120
30
100
mcd
Typ.
10
25
9
10
9
45
60
45
45
45
300
45
120
mcd
Iv@I
F
=20mA
One DP
Min.
8
18
7
8
7
30
45
30
30
30
120
30
100
mcd
Typ.
10
25
9
10
9
45
60
45
45
45
300
45
120
mcd
SPEC NO: DS10121720
REV: A.4
CHECKED: Emily Zhou
APPROVED: M.H. Lin
PAGE: 2/3
HTTP://WWW.DISPLAY-LEDS.COM
TEL: 0086-574-86322282
DATE: Jul/20/2011
LightKey
Parameter
Datasheet of 0.56 inch Four Digit 7 Segment LED Display
Electrical Characteristics & Absolute Maximum Ratings
Electrical optical
Characteristics
Forward
Emitted color
Voltage
@ IF=20mA
Typ.
Super Red
Per Seg.
Per DP
Hi-Red
Per Seg.
Per DP
Orange
Per Seg.
Per DP
Yellow
Per Seg.
Per DP
Green
Per Seg.
Per DP
Ultra Red
Per Seg.
Per DP
Ultra Orange
Per Seg.
Per DP
Ultra Amber
Per Seg.
Per DP
Ultra Yellow
Per Seg.
Per DP
Ultra Green
Per Seg.
Per DP
Pure Green
Per Seg.
Per DP
Ultra Blue
Per Seg.
Per DP
Ultra White
Unit:
Notes:
1. At Ta = 25 °C.
2. Peak forward current at 1/10 Duty Cycle, 0.1ms Pulse.
[1]
Absolute Maximum Ratings
[1]
Reverse
Current
VR=5V
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
uA
Power
Dissipation
DC
Forward
Current
25
25
25
25
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
mA
Peak
Forward
Current
[2]
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
mA
Max.
2.2
2.2
2.2
2.2
2.5
2.5
2.5
2.5
2.5
2.5
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
4
4
4
4
4
4
V
60
60
60
60
80
80
80
80
80
80
60
60
65
65
65
65
65
65
75
75
110
110
120
120
120
120
mW
1.8
1.8
1.8
1.8
2.1
2.1
2.1
2.1
2.2
2.2
1.9
1.9
2
2
2
2
2
2
2.1
2.1
3.5
3.5
3.5
3.5
3.5
3.5
V
Per Seg.
Per DP
\
SPEC NO: DS10121720
REV: A.4
CHECKED: Emily Zhou
APPROVED: M.H. Lin
PAGE: 3/3
HTTP://WWW.DISPLAY-LEDS.COM
TEL: 0086-574-86322282
DATE: Jul/20/2011
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