A connection made by a wire which is passed through a hole in a printed circuit board, and subsequently formed, or clinched, in contact with the conductive pattern on each side of the board, and...
Shiny Li
Jan 20,2016
614 views
A hole in the conductive pattern larger than, but concentric with, a hole in the printed board base material.
Shiny Li
Jan 20,2016
856 views
An in-circuit test fixture to probe both sides of a PCB.
Shiny Li
Jan 20,2016
1024 views
(Adj). A condition of the base material to which a relatively thin layer or sheet of metal foil has been bonded at one or both of its sides, e.g. a metal clad base material.
Shiny Li
Jan 20,2016
449 views
A relatively thin layer or sheet of metal foil which is bonded to a laminate core to form the base material for printed circuits.
Shiny Li
Jan 20,2016
556 views
A crack in the plating extending around the entire circumference of a plated through-hole.
Shiny Li
Jan 20,2016
473 views
Generic term for volume tester of PCBs, such as bed-of-nails, footprint, guided probe, internal trace, loaded board, bare board and parts testing.
Shiny Li
Jan 20,2016
440 views
Large computer-based systems that test individual ICs, especially LSI and VLSI.
Shiny Li
Jan 20,2016
591 views
In this technology integrated circuits are glued and wire-bonded directly to printed circuit boards instead of first being packaged.
Shiny Li
Jan 20,2016
504 views
The chemical process for cleaning conductive surfaces exposed within a hole ( see also “ Etch-back ”).
Shiny Li
Jan 20,2016
479 views
A protective coating produced by the chemical reaction of a metal with a chemical solution.
Shiny Li
Jan 20,2016
468 views
Pen plots that are suitable for checking only. Pads are represented as circles and thick traces as rectangular outlines instead of filled-in artwork. This technique is used to enhance the transparency...
Shiny Li
Jan 20,2016
1711 views
The ratio of voltage to current in a propagating wave, i.e., the impedance which is offered to this wave at any point of the line. The characteristic impedance is expressed in ohms.
Shiny Li
Jan 20,2016
434 views
A corner which has been rounded or shaped to eliminate an otherwise sharp edge.
Shiny Li
Jan 20,2016
794 views
A chemical that speeds or changes the cure of a resin but does not become a part of the final product. Examples: hardeners, promoters, inhibitors.
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Jan 20,2016
691 views
Special sheet adhesive material used for bonding polyimide multi-layer boards and flexi-rigids ( similar to prepreg = B-Stages ).
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Jan 20,2016
502 views
A phenomenon of force adhesion and cohesion that prompts liquids ( molten solder) to flow against gravity between closely spaced solid surface, such as component leads and pads.
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Jan 20,2016
822 views
The electrical interaction between two conductors caused by the capacitance between them.
Shiny Li
Jan 20,2016
610 views
| Ranking | Name | Answers |
|---|---|---|
| 1 | _ Floppy Lab | 4 |
| 2 | PCBWay Team | 3 |
