PLEASE READ Wikipedia Disambiguation Dos and Don ts BEFORE EDITING PCB may refer to Science and technology Printed circuit board , a board used in electronics PCB software , software to design printed circuit boards PCBoard , bulletin board software for MS DOS Polychlorinated biphenyl s, organic compounds Plenum chamber burning, proposed jet engine technology for the thrust vectoring Rolls Royce Pegasus engine Circuit breaker Power circuit breaker , an automatically operated electrical switch Process control block , a data structure in software PCB Piezotronics , a manufacturer of piezoelectric sensors Government Brazilian Communist Party , Partido Comunista Brasileiro Communist Party of Bolivia , Partido Comunista de Bolivia Police Complaints Board , in England and Wales Other uses Pakistan Cricket Board , regulatory board for cricket in Pakistan Panama City Beach, Florida Prifysgol Cymru, Bangor , a university in Wales Perfect Cherry Blossom , a computer game Phelps County Bank , a bank in Missouri, United States Disambig ca PCB cs PCB da PCB de PCB et PCB es PCB fa PCB fr PCB ko PCB it PCB lt PCB nl PCB ja PCB no PCB pl PCB pt PCB simple PCB sk PCB fi PCB sv PCB tr PCB zh PCB ... more details
Orphan date September 2010 Infobox software name http DesignSpark.com PCB DesignSpark PCB logo Image DesignSpark PCB Logo.PNG thumb 250px company RS Components released July 5, 2010 latest release version 2.0 latest release date operating system Microsoft Windows Windows , Linux under Wine software Wine platform size language English language English status genre Free EDA software license Proprietary software website URL http DesignSpark.com PCB DesignSpark PCB is a free of charge schematic capture and PCB layout tool for Electronic design automation electronics design automation EDA , for use by professional electronics design engineers, hobbyists, educators and students. ref Cite web url http www.designspark.com pcb title DesignSpark PCB Design Centre publisher DesignSpark ref EDA software is a sub class of computer aided design CAD software. Although there is no charge for the software ... One Systems. Projects Projects are used in DesignSpark PCB to organise design files. A project can have an unlimited number of schematic sheets and one PCB layout file. Schematic capture DesignSpark PCB has a Schematic editor. Schematics are used to draw up circuit diagrams and connections. A given project can have multiple schematic sheets that together combine to form the complete design. PCB layout Schematics are translated to a PCB layout file with a PCB Wizard. A PCB layout editor is then used ... before a finalised printed circuit board is passed for production. Autorouter DesignSpark PCB includes an auto router which automatically places tracks between components on a PCB layout. Components can also be auto placed. DesignSpark PCB produces Gerber File Gerber and Excellon drill files. These standard files are accepted by Printed circuit board Manufacturing PCB fabrication companies ... References Reflist External links Official website http www.designspark.com pcb DEFAULTSORT Designspark Pcb Category Electronic design automation software ... more details
Infobox software name PCB title logo File screenshot File Pcb eda.png thumb 200px caption collapsible author developer Thomas Nau released 1990 ref name gpleda pcb cite web title Pcb document manual url http pcb.gpleda.org pcb cvs pcb.html 100826 pcb.gpleda.org ref correct? discontinued latest release version 2.0 latest release date Start date and age YYYY MM DD latest preview version latest preview date Start date and age YYYY MM DD frequently updated programming language operating system FreeBSD , NetBSD , Linux , Solaris operating system Solaris , Microsoft Windows , nowrap Mac OS X experimental platform size language status genre Electronic design automation EDA license nowrap GNU General Public License GNU GPL v2 website http pcb.geda project.org Portal box Electronics Free software PCB is an open source software suite for electronic design automation EDA for printed circuit board s PCB layout. History PCB was not the first written by Thomas Nau for an Atari ST in 1990 and ported to Unix like UNIX and X Window System X11 in 1994. Initially not intended as a professional layout system, but as a tool for people that does some home developing of hardware. ref name gpleda pcb ref name linuxfund usability cite web title Linux Fund partners to boost usability of gEDA open source electronic engineering software package url http www.linuxfund.org press pcb 100826 linuxfund.org ref The second release 1.2 included menus for the first time. This made use of PCB easier and thus a more important tool. ref name gpleda pcb Harry Eaton took over pcb development beginning with Release 1.5 ... and XCircuit GNU autoconf automake based build system PCB is Free Software References Reflist External links http pcb.geda project.org pcb cvs pcb.html pcb.geda project.org pcb cvs pcb.html DEFAULTSORT PCB Category Free electronic design automation software Category Linux electronic design automation software Category Electronic design automation software compu soft stub sv PCB mjukvara ... more details
PCB Piezotronics is a manufacturer of piezoelectric sensors. The name PCB is abbreviation for Coulomb PicoCoulomB which is technical terminology defining an electrical charge of the type generated by the piezoelectric sensors they manufacture. Piezotronics combines the science of Piezoelectricity and electronics. PCB manufactures sensors and related instrumentation. Sensors are small electromechanical instruments for the measurement of acceleration, dynamic pressure, force, acoustics, torque, load, strain, shock, vibration and sound. Founded by Robert W. Lally and James F. Lally in 1967, PCB Piezotronics has evolved from a family business to a large company engineering and manufacturing operation ... circuitry, were developed and marketed. The 1970s for PCB Piezotronics saw expansion of its standard ... the emerging machinery health monitoring market. Employment grew to 25 employees. By 1975, PCB had become one of the largest U.S. manufacturers of piezoelectric sensors . During the 1980s, PCB ... automatic bank switching capability. In 1986, PCB developed the first commercial quartz shear structured, ICP accelerometer. Additionally in 1980, PCB broke ground on convert 6 acre m2 of land at 3425 ... was completed. In 1995, Underwriters Laboratory certified PCB to the International Quality Standard ... 0 document id&p perpage 10&p sort YMD date D&s trackval GooglePM title PCB Piezotronics gets ISO 9001 ..., The American Association for Laboratory Accreditation A2LA recognized PCB with accreditation to ISO ... than 60 countries worldwide. These divisions include PCB Automotive Sensors, based in Novi, Michigan PCB Aerospace & Defense IMI Sensors and Larson Davis. PCB product groups include Shock and Vibration ... title PCB Piezotronics plans to build Beach complex last Stoughton first Stephanie date July 28, 1995 work The Virginian Pilot page D1 accessdate 2008 11 10 External links http www.pcb.com PCB Piezotronics http www.vibrtest.ru PCB Piezotronics Russia Category Manufacturing companies based in New York ... more details
Warren County PCB Landfill was a Polychlorinated biphenyl PCB landfill located in Warren County, North ... to dump contaminated soil as result of an illegal PCB dumping incident. The site, which is about convert ... Environmental Racism PCB Landfill Finally Remedied But No Reparations for Residents work publisher ... accessdate 2010 04 27 ref Purpose The purpose of the Warren County PCB landfill, as the public knew it, was to bury 60,000 tons of PCB contaminated soil that been contaminated with toxic PCBs between June and August, 1978, by Robert J. Burns, a business associate with Robert Buck Ward of the Ward PCB ... of PCB contaminated oil along some 240 miles of highway shoulders in 14 counties. Burns of Jamestown ... disposed of the PCB contaminated oil in a matter of hours. Burns and Ward were sent to prison for a short ... creeks, lakes, and rivers have been permanently polluted. Soon after the midnight PCB dumpings, the state ... years as the PCBs spread into the environment while Warren County Citizens fiercely opposed the PCB ... County PCB landfill was permitted as a dry tomb toxic waste landfill by the EPA under the Toxic Substances Control Act. The EPA approved the dry tomb PCB landfill which failed from the beginning .... Within a few months of burying the PCBs, EPA found significant PCB air emissions at the landfill and 1 ... tons of PCB contaminated soil were buried within about 7 feet of groundwater. Warren County s first ... county PCB landfill was an utter failure that should never have been approved by the EPA. Reference ... County, the PCB landfill was filled with controversy. The landfill was located in rural Warren ... discharge landfill. After four years of arduous due process in an effort to stop the PCB landfill ... as they lay in front of 10,000 truckloads of contaminated PCB soil. During the six week trucking ... titled Dumping on the Poor, the Washington Post described the Warren County PCB protest ... Draft , the EPA described the PCB protest movement as the watershed event that led to the environmental ... more details
Merge to Design for manufacturability date May 2010 Design for manufacturability DFM for short. Often referred to as design for manufacturing is a design methodology intended to ease the Printed circuit board Manufacturing manufacturing process of a given product. In the Printed circuit board PCB design process DFM leads to a set design guidelines that attempt to ensure manufacturability. By doing so, probable production problems may be addressed during the design stage. Ideally, DFM guidelines take into account the processes and capabilities of the manufacturing industry. Therefore, DFM is constantly evolving. As manufacturing companies evolve and automate more and more stages of the processes, these processes tend to become cheaper. DFM is usually used to reduce these costs. For example, if a process may be done automatically by machines ie Surface mount technology SMT component placement and soldering , such process is likely to be cheaper than doing so by hand. See also wikibooks Practical Electronics PCB Layout Design for manufacturability DFM in other areas Design for assembly Design for X PCB layout guidelines has been transwikied to wikibooks. Sources Mentor Graphics http www.mentor.com products ic nanometer design techpubs request dfm what is it and what will it do 22338 DFM What is it and what will it do? must fill request form . Also available http www.techonline.com learning techpaper 193102461 here . Mentor Graphics http www.mentor.com products ic nanometer design techpubs request dfm magic bullet or marketing hype 21217 DFM Magic Bullet or Marketing Hype must fill request form . DEFAULTSORT Design For Manufacturability Pcb Category Design for X ... more details
A complete list of polychlorinated biphenyl PCB congeners. Image Polychlorinated biphenyl structure.svg 300px thumb right Chemical structure of PCBs. The possible positions of chlorine atoms on the benzene ring s are denoted by numbers assigned to the carbon atoms. PCB Congener List Explanation of PCB Descriptors Congener descriptors give a shorthand notation for geometry and substituent positions. The twelve congeners that display all four of the descriptors are referred to as being dioxin like , referring both to their toxicity and structural features which make them similar to 2,3,7,8 tetrachlorodibenzo p dioxin 2378 TCDD ref http www.epa.gov reg5oh2o toxteam pcbid tefs.htm PCB ID Toxicity Equivalency Factors TEFs Polychlorinated Biphenyls PCBs US EPA Bot generated title ref . Individual congeners are identified by the number and position of the chlorine atoms around the biphenyl rings. ref http www.caslab.com PCB Congeners Aroclors Testing PCB Congeners ref CP0 CP1 These 68 coplanar congeners fall into one of two groups. The first group of 20 congeners consists of those with chlorine substitution at none of the ortho positions on the biphenyl backbone and are referred to as CP0 or non ortho congeners. The second group of 48 congeners includes those with chlorine substitution at only one of the ortho positions and are referred to as CP1 or mono ortho congeners. 4CL These 169 congeners have a total of four or more chlorine substituents, regardless of position. PP These 54 congeners have both para positions chlorinated. 2M These 140 congeners have two or more of the meta positions chlorinated. class wikitable width 100 border 1 IUPAC Name BZ ref BZ was named after cite doi 10.1007 BF00469758 ref Congener Number CASRN Descriptors Biphenyl 0 92 52 4 2 Chlorobiphenyl 1 2051 ... epawaste hazard tsd pcbs pubs congeners.htm U.S. Environmental Protection Agency PCB Congeners Reflist Category Organochlorides Category Persistent organic pollutants fr Liste des cong n res du PCB ... more details
Unreferenced date December 2009 Orphan date January 2009 Communist Party of Belgium Marxist Leninist Parti Communiste de Belgique Marxiste L niniste , was a small communist party in Belgium . PCB ML was founded in 1976. PCB ML published the monthly magazine La Verit The Truth . PCB ML should not be confused with the PCBML of Grippa and PCB ML . DEFAULTSORT Communist Party Of Belgium Marxist Leninist Category Communist parties in Belgium Category Maoist organizations ... more details
Unreferenced date December 2009 The Namco 32 bit NB 1 arcade system board was first used by Namco in 1993. NB 2 has different memory map, more complex sprite and tile banking and 2 additional ROZ layers than NB 1. Namco NB 1 NB 2 specifications Main CPU Motorola 68EC020 32 bit processor 25 MHz Secondary CPUs C329 C137 Custom graphics chips GFX 123, 145, 156, C116 Motion Objects C355, 187, C347 Sound CPU C351 PCM Sound chip C352 Control chip C160 Board composition 2 boards NB 1 or single board NB 2 Namco NB 1 PCB center class wikitable align center Image NB 1 MAIN PCB 01.jpg none 110px NB 1 MAIN PCB Image NB 1 MAIN B PCB 02.jpg none 110px NB 1 MAIN B PCB Image NB 1 MEMEXT OBJ2 PCB 01.jpg none 110px NB 1 MEMEXT OBJ2 PCB Image NB 1 MEMEXT OBJ8 PCB 01.jpg none 110px NB 1 MEMEXT OBJ8 PCB valign top width 80 small NB 1 MAIN PCB small width 80 small NB 1 MAIN B PCB small width 80 small NB 1 MEMEXT OBJ2 PCB small width 80 small NB 1 MEMEXT OBJ8 PCB small center List of Namco NB 1 arcade games Great Sluggers 93 1993 Great Sluggers Featuring 1994 Team Rosters 1994 J League Soccer V Shoot 1994 Nebulas Ray 1994 Point Blank 1994 video game Point Blank 1994 Super World Stadium 95 1995 Super World Stadium 96 1996 Super World Stadium 97 1997 List of Namco NB 2 arcade games Mach Breakers 1995 The Outfoxies 1994 DEFAULTSORT Namco Nb 1 Category Namco arcade system boards ... more details
The Communist Party of Bolivia Marxist Leninist Spanish language Spanish Partido Comunista de Bolivia marxista leninista , PCB ML was a political party in Bolivia . PCB ML emerged as a pro People s Republic of China splinter group of the Communist Party of Bolivia in 1965. PCB ML was led by scar Zamora Medinaceli . The central press organ of PCB ML was Liberaci n . In 1978 PCB ML founded the Revolutionary Left Front Bolivia Revolutionary Left Front FRI as an open mass front. Today PCB ML does not exist any more, but FRI continues to. See also Communist Party Marxist Leninist of Bolivia References reflist Category Political parties established in 1965 Category Political parties in Bolivia Category Communist parties in Bolivia Bolivia, Communist Party of Bolivia Marxist Leninist ja ... more details
PLEASE READ Wikipedia Disambiguation Dos and Don ts BEFORE EDITING PCBS may refer to Palestinian Central Bureau of Statistics Polychlorinated biphenyls PCBs , the polychlorinated biphenyls See also PCB disambiguation disambig ... more details
Process Control Block PCB, also called Task Controlling Block or Task Struct is a data structure in the operating system Kernel computer science kernel containing the information needed to manage a particular process. The PCB is the manifestation of a process in an operating system . ref cite book last Deitel first Harvey M. title An introduction to operating systems origyear 1982 url http portal.acm.org citation.cfm?id 79046&dl GUIDE&coll GUIDE edition revisited first edition year 1984 publisher Addison Wesley isbn 0 201 14502 2 pages 673 pages 57 58 ref Included information Implementations differ, but in general a PCB will include, directly or indirectly The identifier of the process a process identifier , or PID processor register Register values for the process including, notably, the Program Counter program counter and stack pointer values for the process. The address space for the process Priority in which higher priority process gets first preference. e.g., Nice Unix nice value on Unix operating systems Process accounting information, such as when the process was last run, how much Central processing unit CPU time it has accumulated, etc. Pointer to the next PCB i.e. pointer to the PCB of the next process to run I O Information i.e. I O devices allocated to this process, list of opened files, etc. During context switch , the running process is stopped and another process ... in hardware registers to its PCB, and update the hardware registers with the values from the PCB ... control block PCB or process descriptor. The PCB contains important information about the specific .... The processor it is running on. The PCB is a certain store that allows the operating systems to locate key information about a process. Thus, the PCB is the data structure that defines a process to the operating systems. Location of the PCB Since PCB contains the critical information for the process ... the PCB is placed in the beginning of the kernel call stack stack of the process since that is a convenient ... more details
offerings. Printed Circuit Fabrication Saturn manufactures PCB Printed Circuit Boards for the Electronics manufacturing Electronics Manufacturing Industry providing both quick turn prototype boards and PCB .... Core Products include Heavy Copper PCB Multi layers, PTFE Hybrid Technologies, Microwave RF ... for LED Applications to include Thermal management of high power LEDs PCB .28Printed Circuit Board.29 ... . PCB Supply Chain Saturn Electronics Corporation is often confused with other Saturn s throughout the PCB Supply chain Supply Chain , though it distinguishes itself as the only bare printed circuit ... Saturn Electronics Corporation, PCB Manufacturing DEFAULTSORT Saturn Electronics Corporation, Bare Board Pcb Manufacturer Category Companies based in Wayne County, Michigan ... more details
Orphan date February 2009 Politics of Brazil Movement for the Unity of the Communists in Portuguese language Portuguese Movimento pela Unidade dos Comunistas was a splinter group of the Brazilian Communist Party PCB . MUC split from PCB on April 19, 2005, after the departure of PCB from the Lula government. On May 15 the same year, the 53 members of MUC decided to merge into the Communist Party of Brazil PCdoB . The national coordinators of MUC were Daniel Vieira Sebastiani, Bruno Barbosa and Charles Santos Martins. External links http www.vermelho.org.br diario 2005 0521 0521 manifmuc.asp Article about MUC in Vermelho CP stub SouthAm party stub Brazil stub Category Political parties in Brazil Category Communist parties in Brazil Category Political parties established in 2005 ... more details
Board to board BTB connectors are used to connect printed circuit boards PCB , electronic components that contain a conductive pattern printed on the surface of the insulating base in an accurate and repeatable manner. Each terminal on a BTB connector is connected to a PCB. A BTB connector includes housing and a specific number of terminals. The terminal is made from a conductive material mostly copper alloy , and plated to improve conductivity and antirust. Terminals transmit the current signal between PCB s connected by BTB the housing is made of insulative material mostly plastic . BTB connectors are divided up into two mounting types Through hole technology Surface mount technology BTB connectors are selected by considering the mounting method, pin pitch, number of the rows aka number of the ways , pin length, stacker height etc. electronics stub Category Electronics manufacturing ... more details
orphan date January 2011 gedif command is the command line to work with edif file , the edif files can be created from xml description or vhdl file s, gedif command can make the schematic and behavioral description until the pcb description by automatic or manual routing function. edif ger file sch.edf edif pcb auto dxf file sch.edf file pcb.dxf edif pcb auto edf file sch.edf file pcb.edf but to create the vhdl file we can call the following command edif vhd file sch.edf External links Additional information can be found at https sourceforge.net projects gedif Category Linux ... more details
Bolshevik Communist Party lang es Partido Comunista Bolchevique was a communist group in Mexico during the 1960s. PCB was founded in August 1963 by a group that had been expelled from the Mexican Communist Party PCM in April 1962. The group had been in operation as a faction within the Mexico City Federal District Committee of the PCM, which had opposed the new leadership of the party installed at the 1960 congress. Leading members of PCB were Guillermo Rousset Banda and Santiago Gonz lez. Soon after its formation, the PCB was torn by conflict between the Provisional National Leadership of PCB led by the Rom n Guerra Montemayor cell of the party and the Antonio Gramsci cell. The latter faction was led by Rousset. In the end the followers of Rousset were expelled from the party, and formed the Revolutionary Party of the Proletariat in March 1964. The group around the Rom n Guerra Montemayor cell continued to operate under the name PCB. References reflist http www.criterios.com Documentos 050 El inicio de la Guerrilla Moderna en Mexico.pdf http www.politicas.unam.mx publi publicp razoncinica obras por autor jp aguirre quezada obras aguirre quezada RC121.htm http www.antiimperialista.org index.php?option com content&task view&id 2429&Itemid 88 Category Political parties established in 1963 Category Communist parties in Mexico Category Political parties in Mexico ... more details
Infobox political party country Benin name Communist Party of Benin native name Parti Communiste du B nin logo Image Pcbimage002.PNG leader Pascal Fantodji president chairperson spokesperson foundation 1977 dissolution headquarters Porto Novo , Benin newspaper http www.la flamme.info La Flamme youth wing membership year membership ideology Marxism Leninism Anti Revisionism Hoxhaism national international International Conference of Marxist Leninist Parties and Organizations Unity & Struggle europarl colors colorcode black website footnotes The Communist Party of Benin in French language French Parti Communiste du B nin is a political party in Benin . PCB was founded in 1977 by the Union of Communists of Dahomey . The party was initially called Communist Party of Dahomey Parti Communiste du Dahomey . The first secretary of the party is Pascal Fantodji . PCB publishes La Flamme . PCB was an illegal party, working in a clandestine manner against the K r kou regime, and was only legally recognized on September 17, 1993. PCB is associated with the International Conference of Marxist Leninist Parties and Organizations Unity & Struggle . In the legislative elections of 1995, PCB got one MP elected. In the 1996 presidential elections, PCB candidate Pascal Fantodji got 17,977 votes 1.08 . In 1998 Magloire Yansunnu was expelled. In 1999 Yansunnu formed the Marxist Leninist Communist Party of Benin . External links http www.la flamme.org La Flamme ICMLPO U&S Category Political parties established in 1977 Category Political parties in Benin Category Communist parties in Benin Category International Conference of Marxist Leninist Parties and Organizations Unity & Struggle Benin party stub CP stub br Strollad Komunour Benin ca Partit Comunista de Ben n ... more details
Advert article date November 2011 CR 5000 is the flagship PCB design family from Zuken . It offers advanced functionality for the layout of multi layer and high speed printed circuit board s with integrated Signal Integrity and EMC analysis and optimization. ref http www.directindustry.com prod zuken printed circuit board design software 6237 359069.html ref CR 5000 seamlessly integrates all the tools and technologies needed for complete electronics development in a single environment system design and analysis, constraints management, FPGA and PCB co design, PCB layout and verification and production preparation. The object oriented, database driven software architecture is used by leading companies to create some of the world s most complex PCB designs. CR 5000 is the fourth generation successor of CREATE1000 that was originally developed for PDP 11 by Zukei Gijutsu Kenkyusho Japanese for Graphic Technology and Research Laboratory . The main CR 5000 software is developed at Zuken Inc. headquarters in Yokohama , Japan . Other modules are developed in Zuken s EMC Technology Center in Paderborn , Germany which is renowned for its research in EMC and SI simulation tools, and Zuken Technology Center in Bristol , England which focuses on routing tools. The latest version as of January 2010 is CR 5000 version 13. Tools Design Gateway Next generation schematic creation that facilitates ... prototypes. CR 5000 Lightning A virtual prototyping solution for High Speed PCB design that integrates routing and PCB simulation tools. It provides in depth analysis and what if capabilities ... ref CR 5000 Graphical Pin Manager Enables a straightforward FPGA and PCB co design flow, from top level ... 5000 Board Designer An enterprise PCB design solution that addresses all aspects of the PCB design ... of PCB layouts in their mechanical environment. Provides a 3D view of the PCB in the mechanical enclosure ... process. Integrated with Zuken s CR 5000 PCB design suite, DFM Center enables direct data transfer ... more details
The Liberation Front of the National Left Spanish language Spanish Frente de Liberaci n de Izquierda Nacional , FLIN was organized in 1964 by Communist Party of Bolivia PCB in opposition to V ctor Paz Estenssoro s bid for a third term. ref Ben G. Burnett, Kenneth F. Johnson, Marvin Alisky. Political forces in Latin America dimensions of the quest for stability. Wadsworth Pub. Co., 1968. P. 334. ref The FLIN has opposed the junta of Ren Barrientos Ortu o and the United States . The Liberation Front of the National Left was reestablished in 1966, for the Bolivian presidential election, 1966 1966 presidential and congressional elections . It presented as its presidential candidate Felipe I guez Medrano PCB and Mario Miranda Pacheco PCB , as vice presidential candidate. ref Elections in the Americas a data handbook ed. by Dieter Nohlen, Vol. 2. Oxford u.a. Oxford Univ. Press, 2005. P.150. ref Notes reflist Category Political parties in Bolivia ... more details
. In 2006, the PCB agreed on a nationwide alliance with two other left wing parties, P SOL and PSTU ... the PCB elected a state deputy Jorge Souza, in the state of Amap and had about 20 local representatives ... Party Brazil 20 CSP PSC after Republic Party 22 RP PR years 21 BCP PCB s end Brazilian political parties ... more details
Certified Interconnect Designer CID is a certification from the IPC electronics IPC Designer s Council for experienced PCB design professionals. CID is the Advanced version of this certification. External links http dc.ipc.org html designer certification.htm IPC Designers Council, Designer Certification Comp eng stub Category Electronics manufacturing Category Professional titles and certifications ... more details
Unreferenced date January 2007 Solder mask or solder resist is a lacquer like layer of polymer that provides a permanent protective coating for the copper traces of a printed circuit board PCB and prevents solder from bridging between conductors, thereby preventing short circuit s. Solder mask was created primarily to facilitate wave soldering used in mass assembly. Solder mask is traditionally green but is now available in many colors. Solder mask comes in different media depending upon the demands of the application. The lowest cost solder mask is epoxy liquid that is Screen printing silkscreened through the pattern onto the PCB. Other types are the liquid photoimageable solder mask LPSM inks and dry film photoimageable solder mask DFSM . LPSM can be Screen printing silkscreened or sprayed on the PCB, exposed to the pattern and developed to provide openings in the pattern for parts to be soldered to the copper pads. DFSM is vacuum laminated on the PCB then exposed and developed. All three processes go through a thermal cure of some type after the pattern is defined. External links http www.thefreelibrary.com Soldermask 3A it s not just green anymore whether it s to identify... a0130564604 Soldermask it s not just green anymore whether it s to identify revision changes or to look trendy in a see through box, soldermask is taking on a rainbow of colors. But your processes will have to change with the hues. Free Online Library DEFAULTSORT Solder Mask Category Electronics manufacturing Electronics stub es M scara de soldadura de L tstopplack ... more details
Encyclopedia
top
