Document
SPECIFICATIONS FOR LED DISPLAYS
14.2mm(0.55") Seven Segments Dual Digit LDD055 -10 Series
WENRUN OPTOELECTRONIC
WENRUN LED Displays LDD055
Features:
High efficiency, low power consumption. Extremely low current. Luminous evenly distributed on each segment. Low development cost.
Series
LDD055A/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 LDD055B/DSR-10
Cathode LDD055A/CSR-10
LDD055B/DG-10 LDD055A/CG-10
LDD055B/DE-10
LDD055A/CE-10
Material GaAlAs
Chip Emitting Color Super Red
GaP Green
GaAsP/GaP
Orange
Lens Color
White Diffused
Prepared date June 2005
http://www.wenrun.com
Rev.:3 Page 1 of 5
WENRUN LED Displays LDD055 Series
Absolute Maximum Rating Ta=25
Parameter
Symbol Super Red Green Orange 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 9.0 --
VF 1.85 2.3
IR -- 50
d 645
--
30 --
Green Typ. Max. 4.5 2.2 2.5
-- 50 565 -30 --
Orange
Test
Unit
Typ. Max.
Condition
4.5 -- mcd IF=10mA
2.0 2.5 V IF=10mA
-- 50 uA VR=5V
630 -- nm IF=10mA
30 -- nm IF=10mA
Prepared date June 2005
http://www.wenrun.com
Rev.:3 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 June 2005
http://www.wenrun.com
Rev.:3 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
7 D IG .2
A B C D E F G RDP
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 June 2005
http://www.wenrun.com
Rev.:3 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 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 10 0/1
Typical Electro-Optical Characteristics Curves
Relative Luminous Intensity (%)
Spectrum Distribution
Ta=25
100
GE
SR
75
50
Forward Current If (mA)
25
0 500 550 600 650 700 750
Wavelength λd (nm)
Forward Current vs. Forward Voltage 50 SR
40 E
Forward Current Derating Curve 50
40
Forward Current If (mA)
30
G
20
30 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
http://www.wenrun.com
Rev.:3 Page 5 of 5
.