Shiny Li
Jan 28,2016
399
Permanent Mask
A resist which is not removed after processing, e.g., plating resist used in the fully-additive process.
Shiny Li
Jan 28,2016
752
Peel Strength
The force per unit width required to peel the conductor or foil from the base material.
Shiny Li
Jan 28,2016
354
Pattern
The configuration of all conductive and/or non-conductive areas on a PCB. Letters and inscription may also be included. Pattern also denotes the circuit configuration on related tools, drawing and mas...
Shiny Li
Jan 28,2016
331
Parylene
A polymer resin (Polyparaxylense) that provides a thin, uniform coating on PCBs and components. It can be applied via vacuum for deposition on sharp edges and complex shapes.
Shiny Li
Jan 28,2016
440
Panel Plating
The plating of the entire surface of a panel (including holes).
Shiny Li
Jan 28,2016
462
Panel
The base material containing one or more circuit patterns that passes successively through the production sequence and from which printed circuit boards are extracted. See Backplanes/Backpanels.
Shiny Li
Jan 28,2016
345
Pad
A portion of the conductive area of which components, terminals, traces, etc., are mechanically attached. (Also called land).
Shiny Li
Jan 28,2016
453
Packaging Density
Quantity of functions (components, interconnection devices, mechanical devices) per unit volume, usually expressed in qualitative terms, such as high, medium, or low.
Shiny Li
Jan 28,2016
790
Overhang
Increase in printed circuit conductor width caused by plating build-up or by undercutting during etching.
Shiny Li
Jan 28,2016
534
Outgrowth
The increase in conductor width at one side of a conductor, caused by plating build-up, over that delineated on the production master.
Shiny Li
Jan 28,2016
512
Outgassing
The gaseous emission from a laminate printed board or component when the board or the printed board assembly is exposed to heat or reduced air pressure or both.
Shiny Li
Jan 28,2016
496
Organic Activated (OA)
A water-soluble flux using organic acids as activators.
Shiny Li
Jan 28,2016
377
Open
An area of a bare PCB which, due to over-etching or fabrication problems, separates two electrically connected points.
Shiny Li
Jan 28,2016
416
Omegameter
A test instrument measuring ionic residues on PCBs via the drop of resistivity over a specific time.
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