LightKey
Datasheet of 1.20 inch 5x7 Dot Matrix LED Display
LM12057A/B Series – 1.20 inch 5x7 Dot Matrix LED Display
ATTENTION
OBSERVE PRECAUTIONS
FOR HANDLING
ELECTROSTATIC
DISCHARGE
SENSITIVE
DEVICES
Features
39.10mm (1.20inch) digit high
Dot size: Diameter 3.00mm
Pitch: 4.6mm
Wide viewing angle
Range of emitted colors
I.C. compatible
Low power consumption
White segment
RoHS compliant
Available options
Alternative emitting luminosity:
Standard or high brightness version
Alternative emitted color
Alternative segment color
Alternative font
Common Cathode is available
Cropped terminal pins
Package Dimensions
COL. 1
2
3
4
5
ROW
1
2
4.60*6=27.60
39.10
3
4
5
6
7
PIN 1
4.60*4=18.40
22.80
8.00
0.50
6.30
00
3.
0.51
33.00
2.54*6=15.24
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: DS10121799
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
LM12057A (Common Cathode Row)
Datasheet of 1.20 inch 5x7 Dot Matrix LED Display
LM12057B (Common Anode Row)
COL. 1
PIN
NO.
PIN
NO.
9
14
8
5
12
1
7
2
13
2
3
3
4 11
4
10
5
6
ROW
1
2
3
4
5
6
7
COL.
PIN
NO.
PIN
NO.
9
14
8
5
12
1
7
2
1
13
2
3
3
4 11
4
10
5
6
ROW
1
2
3
4
5
6
7
Selection Guide
Part No.
Common
Cathode Row
LM12057AR
LM12057AD
LM12057AO
LM12057AY
LM12057AG
LM12057AUR
LM12057AUO
LM12057AUA
LM12057AUY
LM12057AUG
LM12057APG
LM12057AUB
LM12057AUW
Unit:
Common
Anode Row
LM12057BR
LM12057BD
LM12057BO
LM12057BY
LM12057BG
LM12057BUR
LM12057BUO
LM12057BUA
LM12057BUY
LM12057BUG
LM12057BPG
LM12057BUB
LM12057BUW
\
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
627
627
610
588
568
627
610
605
595
573
525
470
\
nm
8
18
7
8
7
30
45
30
30
30
120
30
100
mcd
Iv@IF=20mA
One Dot
Min.
Typ.
10
25
9
10
9
45
60
45
45
45
300
45
120
mcd
SPEC NO: DS10121799
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
Electrical
Characteristics
Color
V
F
@
I
F
=20mA
[2]
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.
[1]
Datasheet of 1.20 inch 5x7 Dot Matrix LED Display
Electrical Characteristics & Absolute Maximum Ratings
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
30
30
30
30
30
30
30
30
30
30
30
30
30
uA
Power
Dissipation
60
60
80
80
80
60
65
65
65
75
110
120
120
mW
Max.
2.2
2.2
2.5
2.5
2.5
2.6
2.6
2.6
2.6
2.6
4.0
4.0
4.0
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
\
1.8
1.8
2.1
2.1
2.2
1.9
2.0
2.0
2.0
2.1
3.5
3.5
3.5
V
SPEC NO: DS10121799
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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