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Datasheet of 1.20 inch 5x7 Dot Matrix LED Display
LM12157C/D Series – 1.20 inch 5x7 Dot Matrix LED Display
ATTENTION
OBSERVE PRECAUTIONS
FOR HANDLING
ELECTROSTATIC
DISCHARGE
SENSITIVE
DEVICES
Features
31.99 mm (1.20 inch) digit high
Dot size: Diameter 3.00mm
Pitch: 4.57 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
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: DS10121808
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
Common Cathode Row)
Datasheet of 1.20 inch 5x7 Dot Matrix LED Display
Common Anode Row
Selection Guide
1.2 inch 8x8 Red-Green LED dot matrix module, Matrix Height: 32mm(1.2inch), External Dimensions:
32x32x8mm (L x W x H)
Part No.
Description
Common
Cathode Row
Standard
Brightness
LM12157CRG
LM12157DRG
Common
Anode Row
Material
Chip
W LD
(nm)
640
Iv(mcd)@20mA
One Dot
Min.
8
Typ.
10
Color
Super Red
GaAlAs
GaP
Green
Ultra Red
Ultra Green
568
640
573
7
30
30
9
45
45
Ultra-High
Brightness
LM12157CURUG
LM12157DURUG
AlGaInP
AlGaInP
SPEC NO: DS10121808
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
Datasheet of 1.20 inch 5x7 Dot Matrix LED Display
Electrical Characteristics & Absolute Maximum Ratings
LM12157C/DRG
Electrical Characteristics
[1]
Absolute Maximum Ratings
[3]
Forward
Voltage(V)
Color
@ IF=20mA
[2]
Reverse
Current
VR=5V
(uA)
Power
Dissipation
(mW)
DC Forward
Current
(mA)
Peak
Forward
Current
[2]
(mA)
Reverse
Voltage
(V)
Typ.
Super Red
Green
Ultra Red
Ultra Green
1.8
2.2
1.9
2.1
Max.
2.2
2.5
2.6
2.6
30
30
30
300
60
80
60
75
25
30
30
30
100
100
100
100
5
5
5
Operating/ Storage Temp.:
-40 to +80 deg.;
Lead Solder Temp.:
260 deg. for 3-5 Sec. 2mm below package base
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.
SPEC NO: DS10121808
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