Document
SPECIFICATIONS FOR LED DISPLAYS
14.2mm(0.55") Seven Segments Dual Digit LDD055 -10 Series
WENRUN OPTOELECTRONIC
WENRUN LED Displays LDD055
Features:
z High luminous intensity output. z High efficiency, low power consumption. z Extremely low current. z Luminous evenly distributed on each segment.
Series
LDD055A/B/C/D -10
Descriptions:
z Industrial standard size. z These display provide excellent reliability in bright ambient light. z These devices are made with white segments and black surface.
Applications:
z Audio equipment or Instrument panels. z General use for digital indicators. z Multimedia product.
Selection Guide:
Part No.
Anode
Cathode
Material
Chip Emitting Color
Lens Color
LDD055B/DUB-10 LDD055B/DUG-10
LDD055A/CUB-10 LDD055A/CUG-10
InGaN InGaN
Ultra Super Blue Ultra Super Green
White Diffused
Note Static electricity and surge damages the LED. It is recommend to use a anti-static wrist band on anti-electrostatic glove when handing the LEDS. All devices equipment and machinery must be properly grounded.
Prepared date July 2007
http://www.wenrun.com
Rev.:4 Page 1 of 5
WENRUN LED Displays LDD055 Series
Absolute Maximum Rating Ta=25
Parameter
Symbol Ultra Super Blue Ultra Super Green 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 IFP IF IF VR Topr
70 70 20 5~10 5
70 70
20
5~10
-25~ +75
5
mW mA mA mA V
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
Symbol
Ultra Super Blue Typ. Max.
High Super Green
Test
Unit
Typ. Max.
Condition
IV 35 -- 120 -- mcd IF=10mA
VF 3.2 3.8 3.1 3.8 V IF=20mA
IR -- 50 -- 50 uA VR=5V
d 470 -- 525 -- nm IF=20mA
30 -- 30 -- nm IF=20mA
Prepared date July 2007
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Rev.:4 Page 2 of 5
Package Dimensions:
8°
WENRUN LED Displays LDD055 Series
8 1.5
PIN1
12.7 25
14.2 (.56 ) 19
DIG.1
DIG.2
A FB
G EC
D RDP
8
0.5
2.54*8=20.32
15.24
NOTES • All dimensions are in millimetres (mm), Tolerance is • Specifications are subject to change without notice.
0.25mm unless otherwise noted.
Internal Circuit:
Common Cathode
14
DIG.1
13 DIG.2
ABC
16 15 3
Common Anode
DE
21
14
F G RDP
ABC
18 17 4
11 10
LDD055A
8
DE
65
13
F G RDP
12 7 9
DIG.1
DIG.2
A B C D E F G RDP
A B C D E F G RDP
16 15 3 2 1 18 17 4
11 10 8 6 5 12 7 9
LDD055B
Prepared date July 2007
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Rev.:4 Page 3 of 5
Package Dimensions:
10°
WENRUN LED Displays LDD055 Series
8.1 1.35
PIN1
12.7 25
14.2 (.56 ) 19
DIG.1
DIG.2
A
FB
G
EC
D RDP
8
0.5
2.54*4=10.16
15.24
NOTES • All dimensions are in millimetres (mm), Tolerance is • Specifications are subject to change without notice.
0.25mm unless otherwise noted.
Internal Circuit:
Common Cathode
8 D IG .1
A B C D E F G RDP
7 D IG .2
A B C D E F G RDP
10 9
Common Anode
14 3 6 5 8 D IG .1
2 LDD055C
7 D IG .2
A B C D E F G RDP
A B C D E F G RDP
10 9 1 4 3 6 5 2
LDD055D
Prepared date July 2007
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Rev.:4 Page 4 of 5
WENRUN LED Displays LDD055
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 5s
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
Relative Luminous Intensity (%)
Spectrum Distribution
100
UB
Ta=25
UG
75
50
25
0 400 450 500 550 600 650
Wavelength λd (nm)
Forward Current vs. Forward Voltage 50
Forward Current Derating Curve 50
Forward Current If (mA)
40 40
30
20 UG
UB
10
0 2.0 2.4 2.8 3.2 3.6 4.0
Forward Voltage(Vf)-volts
30
20
10 0
0 20 40 60 80 100 Ambient Temperature Ta(° C)
Forward Current If (mA)
Prepared date July 2007
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Rev.:4 Page 5 of 5
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