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Via (electronics)

 

 
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Via (electronics)
 
 
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In printed circuit board
Printed circuit board

A printed circuit board, or PCB, is used to mechanically support and electrically connect electronic components using Conductor pathways, or signal traces, industrial etchinged from copper sheets laminated onto a non-conductive substrate....
 design, via refers to a pad with a plated hole that connects copper tracks
Signal trace

In electronics, a signal trace on a printed circuit board is the equivalent of a wire for electrical conduction signal s. Each trace consists of a flat, narrow part of the copper foil that remains after etching....
 from one layer of the board to other layer(s). The holes are electroplated
Electroplating

Electroplating is a plating process that uses electrical direct current to redox cations of a desired material from a solution and coat a electrical conductivity object with a thin layer of the material, such as a metal....
, filled with annular rings, or small rivet
Rivet

A rivet is a permanent mechanical fastener. Before it is installed it consists of a smooth cylinder shaft with a head on one end. The end opposite the head is called the buck-tail....
s are inserted. High-density multi-layer PCBs may have microvias: so-called blind vias, which are exposed only on one outer layer, or buried vias, which not exposed on any outer layer. "Thermal vias" carry heat away from power devices.






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In printed circuit board
Printed circuit board

A printed circuit board, or PCB, is used to mechanically support and electrically connect electronic components using Conductor pathways, or signal traces, industrial etchinged from copper sheets laminated onto a non-conductive substrate....
 design, via refers to a pad with a plated hole that connects copper tracks
Signal trace

In electronics, a signal trace on a printed circuit board is the equivalent of a wire for electrical conduction signal s. Each trace consists of a flat, narrow part of the copper foil that remains after etching....
 from one layer of the board to other layer(s). The holes are electroplated
Electroplating

Electroplating is a plating process that uses electrical direct current to redox cations of a desired material from a solution and coat a electrical conductivity object with a thin layer of the material, such as a metal....
, filled with annular rings, or small rivet
Rivet

A rivet is a permanent mechanical fastener. Before it is installed it consists of a smooth cylinder shaft with a head on one end. The end opposite the head is called the buck-tail....
s are inserted. High-density multi-layer PCBs may have microvias: so-called blind vias, which are exposed only on one outer layer, or buried vias, which not exposed on any outer layer. "Thermal vias" carry heat away from power devices. They are typically used in arrays of about a dozen vias.

In integrated circuit
Integrated circuit

In electronics, an integrated circuit is a miniaturized electronic circuit that has been manufactured in the surface of a thin Wafer of semiconductor material....
 design, a via is a small opening in an insulating oxide layer that allows metallic interconnect on different interconnect layers to form a connection. A via on an integrated circuit is often called a through-chip via.

See also

  • Plated
  • Through-hole technology
    Through-hole technology

    File:Resistors .jpgThrough-hole technology, also spelled "thru-hole", refers to the mounting scheme used for Pin-through-hole electronic components that involves the use of leads on the components that are inserted into holes drilled in printed circuit boards and soldering to pads on the opposite side....