Shiny Li
Jan 28,2016
538
Plating
A uniform coating of conductive metal upon the base material of the printed circuit board.
Shiny Li
Jan 28,2016
480
Plating Up
The process consisting of the electrochemical deposition of a conductive material on the base material (surface holes, etc.) after the base material has been made conductive.
Shiny Li
Jan 28,2016
478
Plating Resists
Materials which, when deposited on conductive areas, prevent the plating of the covered areas. Resists are available both as screened-on materials and as dry-film photopolymer resists.
Shiny Li
Jan 28,2016
723
Plating Bar
The temporary conductive path interconnecting areas of a printed board to be electroplated, usually located on the panel outside the borders of such a board.
Shiny Li
Jan 28,2016
607
Plated Through-hole
A hole with the deposition of metal (usually copper) on its sides to provide electrical connections between internal or external conductive patterns.
Shiny Li
Jan 28,2016
476
Plate Finish
Pertaining to Laminating. The finish present on the metallic surface of metal clad base material resulting from direct contact with the laminating press plates without modification by any subsequent f...
Shiny Li
Jan 28,2016
591
Pitting
Small holes or sharp edges on the surface of a solder joint generally caused by flux entrapment, oxidation or over-heating.
Shiny Li
Jan 28,2016
575
Pit
A depression in the conductive layer that does not penetrate entirely through it.
Shiny Li
Jan 28,2016
1024
Pink Ring
Chemically-induced fracturing or de-lamination on or below the surface of the base material; it is usually exhibited by a light area around holes, other etched areas or both.
Shiny Li
Jan 28,2016
498
Pinholes
Small imperfection which penetrate entirely through the conductor and/or solder.
Shiny Li
Jan 28,2016
494
Pin
A terminal on a component. A component lead that is not readily formable without being damaged.
Shiny Li
Jan 28,2016
1441
Pin Density
The quantity of pins on a printed board per unit area.
Shiny Li
Jan 28,2016
441
PIH Assembly
Pin-in-hole a printed board assembly made up of components with leads which pass through holes in the board and lands. Synonyms: traditional assembly, conventional assembly.
Shiny Li
Jan 28,2016
482
Pick-and-place Machine
A programmable machine usually with a robot arm for picking components from a feeder. It moves the part for placement and/or insertion to a specific site on the board.
Shiny Li
Jan 28,2016
337
Physical Layer
A conductive board layer or artwork image representing a complete conductive layer.
Shiny Li
Jan 28,2016
497
Photopolymer
A polymer that changes characteristics when exposed to light of a specific frequency.
| Ranking | Name | Answers |
|---|
