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Dry-film Photoimageable Solder Mask
Solder mask, solder stop mask or solder resist is a thin lacquer-like layer of polymer that is usually applied to the copper traces of a printed circuit board (PCB) for protection against oxidation and to prevent solder bridges from forming between closely spaced solder pads. A solder bridge is an unintended electrical connection between two conductors by means of a small blob of solder. PCBs use solder masks to prevent this from happening. Solder mask is not always used for hand soldered assemblies, but is essential for mass-produced boards that are soldered automatically using reflow or wave soldering techniques. Once applied, openings must be made in the solder mask wherever components are soldered, which is accomplished using photolithography. Solder mask is traditionally green, but is also available in many other colors. Solder mask comes in different media depending upon the demands of the application. The lowest-cost solder mask is epoxy liquid that is silkscreened th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Silk-screen Layer
Screen printing is a printing technique where a mesh is used to transfer ink (or dye) onto a substrate, except in areas made impermeable to the ink by a blocking stencil. A blade or squeegee is moved across the screen to fill the open mesh apertures with ink, and a reverse stroke then causes the screen to touch the substrate momentarily along a line of contact. This causes the ink to wet the substrate and be pulled out of the mesh apertures as the screen springs back after the blade has passed. One colour is printed at a time, so several screens can be used to produce a multi-coloured image or design. Traditionally, silk was used in the process. Currently, synthetic threads are commonly used in the screen printing process. The most popular mesh in general use is made of polyester. There are special-use mesh materials of nylon and stainless steel available to the screen-printer. There are also different types of mesh size which will determine the outcome and look of the fini ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Altium Limited
Altium Limited is an Australian multinational software company that provides electronic design automation software to engineers who design printed circuit boards. Founded as Protel Systems Pty Ltd in Australia in 1985, the company has regional headquarters in the United States, Australia, China, Europe, and Japan. Its products are designed for use in a Microsoft Windows environment and used in industries such as automotive, aerospace, defense, and telecommunications. Its flagship product, Altium Designer, is a software for unified electronics design. History Early history The history of Altium dates to 1985 with the founding of Protel Systems Pty Ltd by electronics designer Nicholas Martin. He was working at the University of Tasmania in the 1980s. He saw an opportunity to make the design of electronics product affordable, by marrying the techniques of electronics design to the PC platform. The company launched its first product in 1985, a DOS-based printed circuit board (P ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Würth Elektronik GmbH & Co
The Würth Group (german: Würth-Gruppe, ) is a worldwide wholesaler of fasteners, screws and screw accessories, dowels, chemicals, electronic and electromechanical components, furniture and construction fittings, tools, machines, installation material, automotive hardware, inventory management, storage and retrieval systems. Würth was founded in 1945 by Adolf Würth in Künzelsau, Germany. The company has been run by his son Reinhold Würth since 1954. History Würth was founded by Adolf Würth (1909–1954), established for the purpose of selling screws in 1945 in Künzelsau (hence the company logo, which consists of the family name and a W of two screw heads with cylindrical and round heads). After the death of Adolf Würth, his son Reinhold Würth took over in 1954 at the age of 19 with his mother Alma Würth, making it a two-person company. Since then, the company has become the world's leading retail group with the main business share in the distribution of fasteners and t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Through-hole
In electronics, through-hole technology (also spelled "thru-hole") is a manufacturing scheme in which leads on the components are inserted through holes drilled in printed circuit boards (PCB) and soldered to pads on the opposite side, either by manual assembly (hand placement) or by the use of automated insertion mount machines. History Through-hole technology almost completely replaced earlier electronics assembly techniques such as point-to-point construction. From the second generation of computers in the 1950s until surface-mount technology (SMT) became popular in the mid 1980s, every component on a typical PCB was a through-hole component. PCBs initially had tracks printed on one side only, later both sides, then multi-layer boards were in use. Through holes became plated-through holes (PTH) in order for the components to make contact with the required conductive layers. Plated-through holes are no longer required with SMT boards for making the component connections, bu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Filename Extension
A filename extension, file name extension or file extension is a suffix to the name of a computer file (e.g., .txt, .docx, .md). The extension indicates a characteristic of the file contents or its intended use. A filename extension is typically delimited from the rest of the filename with a full stop (period), but in some systems it is separated with spaces. Other extension formats include dashes and/or underscores on early versions of Linux and some versions of IBM AIX. Some file systems implement filename extensions as a feature of the file system itself and may limit the length and format of the extension, while others treat filename extensions as part of the filename without special distinction. Usage Filename extensions may be considered a type of metadata. They are commonly used to imply information about the way data might be stored in the file. The exact definition, giving the criteria for deciding what part of the file name is its extension, belongs to the rules of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gerber Format
The Gerber format is an open format, open ASCII file formats#Vector formats, vector format for printed circuit board (PCB) designs. It is the de facto standard used by PCB industry software to describe the printed circuit board images: copper layers, solder mask, legend, drill data, etc. The official website contains the specification, test files, notes and the Reference Gerber Viewer to support users and especially developers of Gerber software. Gerber is used in PCB fabrication data. PCBs are designed on a specialized electronic design automation (EDA) or a Printed circuit board#Design, computer-aided design (CAD) system. The CAD systems output PCB fabrication data to allow fabrication of the board. This data typically contains a Gerber file for each image layer (copper layers, solder mask, Printed circuit board#Legend printing, legend or silk...). Gerber is also the standard image input format for all bare board fabrication equipment needing image data, such as photoplotters, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PADS (CAD Software)
Siemens EDA is a US-based electronic design automation (EDA) multinational corporation for electrical engineering and electronics, headquartered in Wilsonville, Oregon. Founded in 1981 as Mentor Graphics, the company was acquired by Siemens in 2017. The company distributes products that assist in electronic design automation, simulation tools for analog mixed-signal design, VPN solutions, and fluid dynamics and heat transfer tools. The company leveraged Apollo Computer workstations to differentiate itself within the computer-aided engineering (CAE) market with its software and hardware. History Siemens EDA was founded as Mentor Graphics in 1981 by Tom Bruggere, Gerry Langeler, and Dave Moffenbeier, all formerly of Tektronix. The company raised $55 million in funding through an initial public offering in 1984. Mentor initially wrote software that ran only in Apollo workstations. When Mentor entered the CAE market the company had two technical differentiators: the first ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
OrCAD
OrCAD Systems Corporation was a software company that made OrCAD, a proprietary software tool suite used primarily for electronic design automation (EDA). The software is used mainly by electronic design engineers and electronic technicians to create electronic schematics, perform mixed-signal simulation and electronic prints for manufacturing printed circuit boards (PCBs). OrCAD was taken over by Cadence Design Systems in 1999 and was integrated with Cadence Allegro since 2005. The name OrCAD is a portmanteau, reflecting the company and its software's origins: ''Or''egon + ''CAD''. Company Founded in 1985 by John Durbetaki, Ken and Keith Seymour as "OrCAD Systems Corporation" in Hillsboro, Oregon, the company became a supplier of desktop electronic design automation (EDA) software. In 1984 Durbetaki began designing an expansion chassis for the IBM PC. Durbetaki, who had left Intel Corp. after five years as an engineer and project manager, decided, along with brothers Keith an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fritzing
Fritzing is an open-source initiative to develop amateur or hobby CAD software for the design of electronics hardware, intended to allow designers and artists to build more permanent circuits from prototypes. It was developed at the University of Applied Sciences Potsdam. Fritzing is free software under the GPL 3.0 or later license, with the source code available on GitHub and the binaries at a monetary cost, which is allowed by the GPL. Goals The software was created with inspiration from the Processing programming language and the Arduino microcontroller and allows a designer, artist, researcher, or hobbyist to document their Arduino-based prototype and create a PCB layout for manufacturing. The associated website helps users share and discuss drafts and experiences as well as to reduce manufacturing costs. Fritzing can be seen as an electronic design automation (EDA) tool for non-engineers: the input metaphor is inspired by the environment of designers (the breadboard-ba ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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