Document
SPECIFICATIONS FOR LED DISPLAY
14.2mm(0.56") Seven Segments Four Digit LFD056 -10 Series
WENRUN OPTOELECTRONIC
WENRUN LED Displays LFD056 Series
Features:
High efficiency, low power consumption. Extremely low current. Luminous evenly distributed on each segment. Low development cost.
LFD056A/B/C/D -10
Descriptions:
Industrial standard size. These display provide excellent reliability in bright ambient light. These devices are made with white segments and black surface.
Applications:
Audio equipment or Instrument panels. General use for digital indicators. Multimedia product.
Selection Guide:
Part No.
Anode LFD056B/DSR-10
Cathode LFD056A/CSR-10
LFD056B/DG-10
LFD056A/CG-10
LFD056B/DY-10
LFD056A/CY-10
Material GaAlAs
Chip Emitting Color Super Red
GaP Green
GaAsP/GaP
Yellow
Lens Color
White Diffused
Prepared date June 2005
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WENRUN LED Displays LFD056 Series
Absolute Maximum Rating Ta=25
Parameter
Symbol Super Red Green
Yellow Unit
Power Dissipation/Segment
Peak Forward Current /Segment (Duty 1/10@ 1KHz)
Continuous Forward Current /Segment
Recommend use current /Segment
Reverse Voltage /Segment
Operating Temperature Range
Pd 50 60 60 mW IFP 70 70 70 mA
IF 20 20 20 mA
IF
5~10
5~10
5~10
mA
VR 5
5 5V
Topr -25~ +75
Storage Temperature Range
Tstg
-30 ~ +85
Solder Temperature
Tsol
260 5
Notes 1 This is the limit current . It is not allowed to use when the product work continuously. 2 It is recommended that the product is driven by TTL,CMOS. 3 Soldering time 5 seconds.
Electrical Optical Characteristics Ta=25
Parameter
Luminous Intensity /Segment
Forward Voltage /Segment
Reverse Current /Segment Dominant Wavelength
Spectral Line Half Width
Super Red Symbol
Typ. Max. IV 9.2 --
VF 1.85 2.3
IR -- 50
d 645 --
30 --
Green Typ. Max. 4.6 -2.2 2.5
-- 50 565 -30 --
Yellow
Test
Unit
Typ. Max.
Condition
4.6 -- mcd IF=10mA
2.0 2.5 V IF=20mA
-- 50 uA VR=5V
585 -- nm IF=20mA
30 -- nm IF=20mA
Prepared date June 2005
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Rev.:3 Page 2 of 5
Package Dimensions:
WENRUN LED Displays LFD056 Series
8°
8.1 1.35
1.45 14.2(.56 )
19
PIN1 12.7 12.7 12.7 50.3
8
2.54*5=12.7
DIG.1
DIG.2
DIG.3
DIG.4
A FB
G
EC D DP
NOTES • All dimensions are in millimetres (mm) • Tolerance is 0.25mm unless otherwise noted
0.5 15.24
Internal Circuit:
Common Cathode
12 DIG.1
DIG.2
9
DIG.3
8
DIG.4
6
A B C D E F G DP A B C D E F G DP A B C D E F G DP A B C D E F G DP
11 7 4 2 1 10 5 3
Common Anode
12
DIG.1
DIG.2
9
LFD056A
DIG.3
8
DIG.4
6
A B C D E F G DP A B C D E F G DP A B C D E F G DP A B C D E F G DP
11 7 4 2 1 10 5 3
Prepared date June 2005
LFD056B http://www.wenrun.com
Rev.:3 Page 3 of 5
Package Dimensions:
WENRUN LED Displays LFD056 8.1
8° 1.35
Series
1.45 14.2(.56 )
19
PIN1 12.7 12.7 12.7 50.3
8
2.54*17=43.18
DIG.1
DIG.2
DIG.3
NOTES • All dimensions are in millimetres (mm) • Tolerance is 0.25mm unless otherwise noted
DIG.4
A FB
G
EC D DP
0.5 15.24
Internal Circuit:
Common Cathode 32
DIG.1
DIG.2
31
DIG.3
23
DIG.4
22
A B C D E F G DP A B C D E F G DP A B C D E F G DP A B C D E F G DP
34 33 3 2 1 36 35 4 29 28 8 6 5 30 7 9 25 24 12 11 10 27 26 13 20 19 17 15 14 21 16 18
Common Anode
LFD056C
32 31 23 22
DIG.1
DIG.2
DIG.3
DIG.4
A B C D E F G DP A B C D E F G DP A B C D E F G DP A B C D E F G DP
34 33 3 2 1 36 35 4 29 28 8 6 5 30 7 9 25 24 12 11 10 27 26 13 20 19 17 15 14 21 16 18
LFD056D
Prepared date June 2005
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Rev.:3 Page 4 of 5
WENRUN LED Displays LFD056
Reliability Test Items and Conditions
Series
NO Test Item
Test Conditions
1
Temperature Cycle
-30 25 85 25 30min 5min 30min 5min
2 High Temp. Storage
Ta=85
3 Temp.& Humidity Test
Ta=85 RH=85%
4 Low Temp. Storage
Ta=-30
5 Operating Life Test
Ta=25 5 DC IF=15mA
6 Solder Heat
Tsol=260 5 10s
Duration 50clycles 1000hours 1000hours 1000hours 1000hours
1times
Sample Ac/Re 100 0/1 100 0/1 100 0/1 100 0/1 100 0/1 20 0/1
Typical Electro-Optical Characteristics Curves
Spectrum Distribution
Ta=25
100
GY
SR
75
Relative Luminous Intensity (%)
50
25
Forward Current If (mA)
0 500 550 600 650 700 750
Wavelength λd (nm)
Forward Current vs. Forward Voltage 50 SR
Y
40
Forward Current Derating Curve 50
40
Forward Current If (mA)
30
G
20
30 G Y SR
20
10
0 1.2 1.6 2.0 2.4 2.8 3.2
Forward Voltage(Vf)-volts
10
0 0 20 40 60 80 100
Ambient Temperature Ta(° C)
Prepared date June 2005
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Rev.:3 Page 5 of 5
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