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Copper foil is a thin sheet of copper metal that is widely used in various applications due to its excellent electrical conductivity, malleability, and corrosion resistance. It is an essential material in the electronics industry, especially for manufacturing printed circuit boards (PCBs) and other electronic components.
As the current conductors are thin sheets of copper, the operating frequency is not limited by skin effect. As such, high power converters built with planar transformers can be designed to operate at relatively high switching frequencies, often 100 kHz or above.
The alloy typically consists of 85–88% copper and the remainder being zinc. It is also known by other names such as "composition gold leaf", "Dutch gold", "Schlagmetal" and "Schlag leaf". [1] It is very malleable and ductile and so can be beaten into very thin sheets. These sheets are sold for use as metal leaf or imitation gold leaf. [2]
Sheet metal is metal formed into thin, flat pieces, usually by an industrial process. Thicknesses can vary significantly; extremely thin sheets are considered foil or leaf, and pieces thicker than 6 mm (0.25 in) are considered plate, such as plate steel, a class of structural steel. Sheet metal is available in flat pieces or coiled strips.
About 100 times slower erosion of copper than ordinary tin/lead alloys. Suitable for soldering thin copper platings and very thin copper wires. [56] Sn 60 Pb 39 Cu 1: Pb: No: Sn 60 Pb 38 Cu 2: 183: 190 [16] [17] Pb: Cu2. Copper content increases hardness of the alloy and inhibits dissolution of soldering iron tips and part leads in molten ...
There are four main techniques used today in the UK and mainland Europe for copper cladding [1] [2] a building: seamed-cladding (typically 0.7 mm thick copper sheet on the facade): max 600 mm by 4000 mm 'seam centres'. shingle-cladding (typically made from 0.7 mm thick copper sheet): max 600 mm by 4000 mm 'seam centres'.
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