Hitachi Metals, Ltd.

Hitachi Cable, Inc.

Hitachi Cable Fine-tech, Ltd.

Proterial, Ltd.

Yuju Endo

Hiroshi Bando

Kazufumi Suenaga

Hiromitsu Kuroda

Takashi Nemoto

Atsushi Ootake

Syuji Kawasaki

Takahiro Sugiyama

Hajime Nishi

Hiroyuki Akutsu

Hiroshi Ishikawa

Hiroshi Sugimoto

Hiroshi Okikawa

Hideyuki Sagawa

Hisashi Tate

Toshi Sasaki

Hiroyuki Takasaka

Takashi Suzumura

Toshio Kawamura

Shigeharu Takahagi

Iku Higashidani

Makoto Aida

Setsuo Ando

Katsunori Sawahata

Hideyuki Suzuki

Masahiro Abe

Seigi Aoyama

Akinari Nakayama

Takayuki Tsuji

Takaaki Ichikawa

Sohei Kodama

Hakaru Matsui

Tetsuro Sato

Ken Takahashi

Setsuo Andoh

Yukio Ito

Ryo Inoue

A signal transmission cable includes a signal line, an insulation layer configured to cover the signal line, and a plating layer configured to cover the insulation layer. An arithmetic average roughness Ra of an outer peripheral surface of the insulation layer is between 0.6 &#x3bc;m and 10 &#x3bc;m inclusive. A method of manufacturing the signal transmission cable includes covering the signal line with the insulation layer, followed by conducting a dry-ice-blasting on the outer peripheral surface of the insulation layer, followed by conducting a corona discharge exposure process on the outer peripheral surface, and forming the plating layer on the outer peripheral surface.

Resin with plating layer and method of manufacturing the same

Signal transmission cable, multicore cable, and method of manufacturing signal transmission cable

Provided is a differential signal transmission cable, a multi-core cable, and a method of manufacturing a differential signal transmission cable that can suppress an increase in differential-to-common mode conversion quantity. The differential signal transmission cable includes two signal lines, an insulation layer covering a periphery of the two signal lines, and a plating layer covering the insulation layer. Differential-to-common mode conversion quantity of the differential signal transmission cable has a maximum value of &#x2212;26 dB or less, in a frequency band of 50 GHz or less. In the method of manufacturing a differential signal transmission cable, dry ice blasting is performed on an outer peripheral surface of the insulation layer, and then corona discharge exposure is performed on the outer peripheral surface.

Differential signal transmission cable, multi-core cable, and manufacturing method of differential signal transmission cable

A method of producing a refined copper includes depositing the refined copper on a cathode by an electroplating process or an electroless plating process in an alkaline plating bath including a solution of a copper compound that includes none of sulfur, chlorine and oxygen elements and produces copper ions having a valence of +1 in the solution.

Refined copper, method of producing refined copper, electric wire and method of manufacturing electric wire

A crimping terminal includes a crimping part that is compressed to a conductive part of an electric wire, and a buffer layer formed on a surface where the crimping part contacts the conductive part. The buffer layer includes a resin, a plating or a grease and a conductive microscopic particle that is mixed and dispersed therein. The microscopic particle includes a fractal structure including a fine protrusion on a surface of the microscopic particle.

Crimping terminal and electric wire with crimping terminal

A rectangular conductor for a solar battery and a lead wire for a solar battery, in which warping or damaging of a silicon crystal wafer is hard to occur at the time of bonding a connection lead wire even when a silicon crystal wafer is configured to have a thin sheet structure, can be provided. A conductorhaving a volume resistivity equal to or less than 50 &#x3bc;&#x3a9;&#xb7;mm, and a 0.2% yield strength value equal to or less than 90 MPa in a tensile test is formed into a rectangular conductorfor a solar battery having a rectangular cross section, and a surface of the rectangular conductorfor a solar battery is coated with a solder plating film, to provide a lead wirefor a solar battery.

Solar battery rectangular conductor, method for fabricating same and solar battery lead wire

Rectangular conductor for solar battery, method for fabricating same and lead wire for solar battery

A solar cell lead wire includes a molten solder plated layer on a strip-shaped conductive material formed rectangular in a cross section thereof so as to be bonded by soldering to an electrode of a solar cell, using a flux. A thickness of an oxide film on a surface of the molten solder plated layer, which is a sum of a thickness of an SnO layer and a thickness of an SnOlayer on the surface of the molten solder plated layer, is not more than 7 nm.

Lead wire for solar cell, manufacturing method and storage method thereof, and solar cell

A resin composition includes a polyolefin resin. A viscosity of the resin composition is within a range of not less than 500 Pa&#xb7;s and not more than 2300 Pa&#xb7;s under measurement conditions of a measurement temperature of 170&#xb0; C. and a measurement frequency of 1 Hz. A strain hardening rate of the resin composition in uniaxial elongational viscosity measured under measurement conditions of a measurement temperature of 150&#xb0; C. and a strain rate of 3.0 sis not less than 800%. A foam insulated wire includes a conductor, and a foam insulation of the resin composition extruded on an outer periphery of thereof. A diameter of the conductor is 3.5 to 18 mm, and an outer diameter of the foam insulation is not less than 8 mm.

Resin composition and foam insulated wire

A solar cell lead wire includes a strip-shaped conductive material formed by rolling a wire, and upper and lower melt solder-plated layers formed to be flat on upper and lower surfaces, respectively, of the strip-shaped conductive material by supplying melt solder thereto.

Solar cell lead wire and production method therefor and solar cell using same

A metallic material is rolled to provide a conductorhaving a rectangular cross section. A surface of the rectangular conductoris plated with a plating layer. A thickness of the plating layerat a surface facing to the Si cell is not more than 5 &#x3bc;m to provide a connecting lead wirefor a solar battery. The connecting lead wirefor a solar battery has 0.2% proof stress of not more than 60 MPa. The connecting lead wirefor a solar battery is connected to a predetermined contact region of a Si cellof a solar battery at a high temperature.

Connecting lead wire for a solar battery, method for fabricating same, and solar battery using the connecting lead wire

A straight angle conductoris provided with a cladding material including a core-sheet metaland conductor-sheet metalsthat sandwich both surfaces of the core-sheet metal. The conductor-sheet metalshaving a volume resistivity equal to or less than 5.0 (&#x3bc;&#x3a9;&#xb7;cm) wraps both sides of the core-sheet metalhaving a thermal expansion coefficient equal to or less than 10 (&#xd7;10/C. &#xb0;) to prevent the core-sheet metalfrom being exposed to an outside of the conductor-sheet metals. As a result, it prevents occurrence of an electrical potential difference in a boundary side face between the core-sheet metaland the conductor-sheet metalsto improve corrosion resistance. Especially even when the straight angle conductoris used on a silicon crystal wafer for a solar cell, damage of the silicon crystal wafer caused by heat occurring in soldering process of the conductoror a change in temperature on use thereof for a solar cell is avoided.

Straight angle conductor and method of manufacturing the same

A method for punching an insulating film is composed of using plural divided punches having a clearance between each two of the divided punches. The clearance absorbs thermal expansion of the divided punches caused by receiving a heat from a heater. A punched insulating film is stuck to a lead frame by being pressed between the divided punches and the heater.

Method for sticking an insulating film to a lead frame

Growing community of inventors

Hitachi, Japan

Yuju Endo