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Circuito impresso Coard

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Mechanicallysupportsandelectricallyconnectselectroniccomponentsusingconductivetracks Aprintedcircuitboard (PCB), padsandotherfeaturesetchedfromcoppersheetslaminatedontoanon-conductivesubstrate. PCBscanbesinglesided(onecopperlayer),doublesided(twocopperlayers)ormulti-layer(outerandinnerlayers). Multi-layerPCBsallowformuchhighercomponentdensity.Conductorsondifferent layersareconnectedwithplated-throughholescalledvias.

AdvancedPCBsmaycontaincomponents-condensadores, resistorsoractivedevices-embeddedinthesubstrate. FR-4glassepoxyistheprimaryinsulatingsubstrateuponwhichthevastmajorityofrigidPCBsareproduced.AthinlayerofcopperfoilislaminatedtooneorbothsidesofanFR-4panel.Circuitryinterconnectionsareetchedinto copperlayerstoproduceprintedcircuitboards.

Complexcircuitsareproducedinmultiplelayers.Printedcircuitboardsareusedinallbutthesimplestelectronicproducts.AlternativestoPCBsincludewirewrapandpoint-to-pointconstruction.PCBsrequiretheadditionaldesignefforttolayoutthecircuit,butmanufacturingandassemblycanbeautomated. ManufacturingcircuitswithPCBsischeaperandfasterthanwithotherwiringmethodsascomponentsaremountedandwiredwithonesingle parte. Além disso, wiringerrorsareeliminated de operador.

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