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New Products
Mobile phones, digital cameras, and other electronic devices that use
complicated hinging movement are now widely available. As the wiring materials
within the hinges need to be highly flexuous, micro coax cable is generally used.
Currently, various connectors are also being developed for connecting micro coax
cables with the substrate circuits.
Fujikura has developed micro coax cable with the conductor size of AWG42 for
0.3-mm-pitch connectors. Using a structure that combines a copper alloy
conductor with fluorocarbon polymer, and improvements in thin extrusion
production technology, we achieved a diameter of 0.29 mm. It provides both
better flexibility and higher bendability than the conventional cable, which makes
it easy to introduce the hinges with narrow wiring spaces.
In response to the requirement about space and assembly operation, Fujikura
has developed a hybrid wiring material that combines micro coax cable and FPC
with high-precision and Pb-free-soldering technology. The hybrid wiring material
can also contribute to an increase in the possibility of equipment design.
Micro Coax Cable
Assembly
Table 1. Typical Electric Specification
Inner
conductor
Shield
conductor
Items
Max conductor resistance
Insulation resistance
Jacket
Dielectric strength
Characteristic impedance
Attenuation (dB/3m)
Fig. 1. Typical Cable Structure.
0
10
20
30
40
50
60
AWG42 (φ0.325)
AWG42 (φ0.29)
0
1
2
3
4
5
Frequency (GHz)
6
100
90
80
70
60
50
40
30
20
10
0
Contents
Ω/km
7,500
MΩ-km
500
AC V/ min
250
Ω
45 or 50
AWG42
AWG40
Temp raise (°C)
Insulation
Unit
0
0.05 0.1 0.15 0.2 0.25 0.3
Current (A)
Fig. 2. Attenuation.
Fig. 3. Temperature Rise.
Fig. 4. Assembly Sample.
Fig. 5. Assembly Sample. (Hybrid type)
[Information]
Tel : +81 3 5606 2417 FAX: +81 3 5606 2418
Email : askecd@fujikura.co.jp
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