LightKey
Datasheet of 4.00 inch 5x7 Dot Matrix LED Display
LM40057A/B Series – 4.00 inch 5x7 Dot Matrix LED Display
ATTENTION
OBSERVE PRECAUTIONS
FOR HANDLING
ELECTROSTATIC
DISCHARGE
SENSITIVE
DEVICES
Features
106.50mm (4.00 inch) digit high
Dot size: Diameter 10.00 mm
Pitch: 15.24 mm
Wide viewing angle
Range of emitted colors
I.C. compatible
Low power consumption
White dot, grey or black face
RoHS compliant
Available options
Alternative emitting luminosity:
Standard or high brightness version
Alternative emitted color
Alternative dot color
Alternative face
Both CC and CA versions are available
Cropped terminal pins
Package Dimensions
COL. 1
2
3
4
5
ROW
1
2
15.24*6=91.44
106.50
3
4
5
6
7
PIN 1
15.24*4=60.96
76.00
10
.0
0
13.00
0.50
5.30
0.80
76.20
5.08*6=30.48
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: DS10121846
REV: A.4
CHECKED: Emily Zhou
TEL: 0086-574-86322282
APPROVED: M.H. Lin
PAGE: 1/3
HTTP://WWW.LTKEY.COM
DATE: Jul/20/2011
LightKey
Internal Circuit Diagram
LM40057A (Common Cathode Row)
COL. 1
PIN 13
NO.
ROW PIN
NO.
1
9
2
3
3
4 11
4
10
5
6
Datasheet of 4.00 inch 5x7 Dot Matrix LED Display
LM40057B (Common Anode Row)
COL.1
PIN 13
NO.
ROW PIN
NO.
1
9
2
3
3
4 11
4
10
5
6
2
14
2
14
3
4
8
5
12
1
3
4
8
5
12
1
5
5
6
7
6
7
7
2
7
2
Selection Guide
Part No.
Common
Cathode Row
LD40057AR
LD40057AD
LD40057AO
LD40057AY
LD40057AG
LD40057AUR
LD40057AUO
LD40057AUA
LD40057AUY
LD40057AUG
LD40057APG
LD40057AUB
LD40057AUW
Unit:
\
Common
Anode Row
LD40057BR
LD40057BD
LD40057BO
LD40057BY
LD40057BG
LD40057BUR
LD40057BUO
LD40057BUA
LD40057BUY
LD40057BUG
LD40057BPG
LD40057BUB
LD40057BUW
\
Material
GaAlAs
GaAlAs
GaAsP
GaAsP
GaP
AlGaInP
AlGaInP
AlGaInP
AlGaInP
AlGaInP
InGaN
InGaN
SMD
\
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
Iv@IF=20mA
One Dot
Min.
12
27
10.5
12
10.5
45
67.5
45
45
45
180
45
150
mcd
Typ.
15
37.5
13.5
15
13.5
67.5
90
67.5
67.5
67.5
450
67.5
180
mcd
SPEC NO: DS10121846
HTTP://WWW.LTKEY.COM
REV: A.4
CHECKED: Emily Zhou
TEL: 0086-574-86322282
APPROVED: M.H. Lin
PAGE: 2/3
DATE: Jul/20/2011
LightKey
Parameter
Datasheet of 4.00 inch 5x7 Dot Matrix LED Display
Electrical Characteristics & Absolute Maximum Ratings
Electrical optical
Characteristics
V
F
@
Emitted Color
IF=20mA
Typ.
Super Red
Hi-Red
Orange
Yellow
Green
Ultra Red
Ultra Orange
Ultra Amber
Ultra Yellow
Ultra Green
Pure Green
Ultra Blue
Ultra White
Unit:
Notes:
1. At Ta = 25 °C.
2. Forward voltage at forward current = 20mA.
3. Peak forward current at 1/10 Duty Cycle, 0.1ms Pulse.
[2]
[1]
Absolute Maximum Ratings
[1]
DC
Forward
Current
25
25
30
30
30
30
30
30
30
30
30
30
30
mA
Peak
Forward
Current
[3]
100
100
100
100
100
100
100
100
100
100
100
100
100
mA
Reverse
Current
VR=5V
50
50
50
50
50
50
50
50
50
50
50
50
50
uA
Power
Dissipation
120
120
160
160
160
120
130
130
130
150
220
240
240
mW
Max.
4.4
4.4
5
5
5
5.2
5.2
5.2
5.2
5.2
8
8
8
V
Per Dot
Per Dot
Per Dot
Per Dot
Per Dot
Per Dot
Per Dot
Per Dot
Per Dot
Per Dot
Per Dot
Per Dot
Per Dot
\
3.6
3.6
4.2
4.2
4.4
3.8
4
4
4
4.2
7
7
7
V
SPEC NO: DS10121846
HTTP://WWW.LTKEY.COM
REV: A.4
CHECKED: Emily Zhou
TEL: 0086-574-86322282
APPROVED: M.H. Lin
PAGE: 3/3
DATE: Jul/20/2011
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