SPECIFICATIONS FOR LED DISPLAYS
11mm(0.43") Seven Segments Dual Digit
LDD043□□-10 Series
WENRUN OPTOELECTRONIC
WENRUN LED Displays LDD043□□ Series
Prepared date：July 2007 http://www.wenrun.com Rev.:4 Page 1 of 4
◆Features:
z High efficiency, low power consumption.
z Extremely low current.
z Luminous evenly distributed on each segment.
z Low development cost.
LDD043A/B□-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. Chip
Anode Cathode Material Emitting Color
Lens
Color
LDD043BSR-10 LDD043ASR-10 GaAlAs Super Red
LDD043BG-10 LDD043AG-10 GaP Green
White
Diffused
WENRUN LED Displays LDD043□□ Series
Prepared date：July 2007 http://www.wenrun.com Rev.:4 Page 2 of 4
◆Absolute Maximum Rating （Ta=25℃）
Parameter Symbol Super Red Green Unit
Power Dissipation/Segment Pd 50 60 mW
Peak Forward Current /Segment
(Duty 1/10@ 1KHz) IFP 70 70 mA
Continuous Forward Current
/Segment① IF 20 20 mA
Recommend use current
/Segment ② IF 5~10 5~10 mA
Reverse Voltage /Segment VR 5 5 V
Operating Temperature Range Topr -25~ +75 ℃
Storage Temperature Range Tstg -30 ~ +85 ℃
Solder Temperature③ 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℃）
Super Red Green
Parameter Symbol
Typ. Max. Typ. Max.
Unit Test
Condition
Luminous Intensity
/Segment
IV 5.2 -- 2.6 -- mcd IF=10mA
Forward Voltage
/Segment
VF 1.85 2.3 2.2 2.5 V IF=20mA
Reverse Current
/Segment
IR -- 50 -- 50 uA VR=5V
Dominant
Wavelength λd 645 -- 565 -- nm IF=20mA
Spectral Line Half
Width Δλ 30 -- 30 -- nm IF=20mA
WENRUN LED Displays LDD043□□ Series
Prepared date：July 2007 http://www.wenrun.com Rev.:4 Page 3 of 4
◆Package Dimensions:
NOTES：
• All dimensions are in millimetres (mm), Tolerance is ±0.25mm unless otherwise noted.
• Specifications are subject to change without notice.
◆Internal Circuit:
Common Cathode
LDD043A□
Common Anode
LDD043B□
6.5
15.242.54*8=20.32
7
10°
18.8
11(.43)
23.8
12
1
DIG.2
G
C
E
FB
A
DIG.1
RDP
PIN1
D
￠
0.5
13
DIG.2
14
DIG.1
RDP
9
CD GFEBARDP
11 10 856 12 74
DC EFAB
15
16 31
218
G
17
1314
9
RDP
DIG.2
12
D
8
C
65
EF
7
G
4
RDP
11
A
10
B
DIG.1
18
2
3
CD
1
FEB
16
A
15 17
G
WENRUN LED Displays LDD043□□ Series
Prepared date：July 2007 http://www.wenrun.com Rev.:4 Page 4 of 4
◆Reliability Test Items and Conditions
NO Test Item Test Conditions Duration Sample Ac/Re
1 Temperature Cycle
-30℃～25℃～85℃～25℃
30min 5min 30min 5min 50clycles 100 0/1
2 High Temp. Storage Ta=85℃ 1000hours 100 0/1
3 Temp.& Humidity Test Ta=85℃
RH=85% 1000hours 100 0/1
4 Low Temp. Storage Ta=-30℃ 1000hours 100 0/1
5 Operating Life Test Ta=25±5℃
DC IF=15mA 1000hours 100 0/1
6 Solder Heat Tsol=260±5℃，5s 1times 20 0/1
◆Typical Electro-Optical Characteristics Curves
Ambient Temperature Ta(° C)
Forward Current Derating Curve
Forward Voltage
Forward Current vs.
Forward Voltage(Vf)-volts
0
1.2 1.6
50
40
30
20
10
Forward Current If (mA)
SR
Relative Luminous Intensity (%)
2.0 2.4 2.8 3.2
G
0
0
Forward Current If (mA)
30
20
10
50
40
Spectrum Distribution
Wavelength λd (nm)
G
25
500
0
50
75
550
100
SR
600 650
20 40 60 80 100
700 750
Ta=25℃
