LightKey
Datasheet of 1.20 inch 5x7 Square Dot Matrix LED Display
LM12257A/B Series – 1.20 inch 5x7 Square Dot Matrix LED Display
ATTENTION
OBSERVE PRECAUTIONS
FOR HANDLING
ELECTROSTATIC
DISCHARGE
SENSITIVE
DEVICES
Features
28.60 mm (1.2 inch)
matrix height
Available options
Alternative emitting luminosity:
Standard or high brightness version
Alternative emitted color
Alternative dot and face color
Alternative font
Both CA and CC versions are available
Cropped terminal pins
Dot size: 4x4mm
Pitch: 4.1mm
Wide viewing angle
Range of emitted colors
I.C. compatible
Low power consumption
White dot, grey or black face
RoHS compliant
Package Dimensions
3 . 0( 0 . 1 2 )
3.0(0.12 )
4 . 1× 6= 2 4. 6
2 8 . 6( 1 . 1 . 14 )
4.1×4=16.4
20.3(0.81 )
COL.
ROW 1 2
1
3 4
5
1 0. 3
2
3
4
Ø0.51
2.54×6=15.24
5
6
7
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: DS10121810
REV: A.4
CHECKED: Emily Zhou
20 . 5 0
APPROVED: M.H. Lin
PAGE: 1/3
HTTP://WWW.DISPLAY-LEDS.COM
TEL: 0086-574-86322282
DATE: Jul/20/2011
LightKey
Internal Circuit Diagram
LM12257B (Common Anode Row)
COL. 1
PIN
NO.
13
PIN
NO.
1
9
2
14
3
8
4
5,12
Datasheet of 1.20 inch 5x7 Square Dot Matrix LED Display
LM12257A (Common Cathode Row)
COL. 1
PIN
NO.
13
PI N
NO.
1
9
2
14
3
8
4
5,12
2
3
3
4, 11
4
10
5
6
2
3
3
4,11
4
10
5
6
5
1
6
7
7
2
5
1
6
7
7
2
CODE N
Selection Guide
Part No.
Common
Cathode Row
LM12257AR
LM12257AD
LM12257AO
LM12257AY
LM12257AG
LM12257AUR
LM12257AUO
LM12257AUA
LM12257AUY
LM12257AUG
LM12257APG
LM12257AUB
LM12257AUW
Unit:
Common
Anode Row
LM12257BR
LM12257BD
LM12257BO
LM12257BY
LM12257BG
LM12257BUR
LM12257BUO
LM12257BUA
LM12257BUY
LM12257BUG
LM12257BPG
LM12257BUB
LM12257BUW
\
Material
GaAlAs
GaAlAs
GaAsP
GaAsP
GaP
AlGaInP
AlGaInP
AlGaInP
AlGaInP
AlGaInP
InGaN
InGaN
SMD
\
CODE M
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.
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: DS10121810
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
Datasheet of 1.20 inch 5x7 Square Dot Matrix LED Display
Electrical Characteristics & Absolute Maximum Ratings
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]
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: DS10121810
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
