One of the patterns of the quality conformance test circuitry area. (See: also Test Coupon).
Shiny Li
Jan 20,2016
513 views
A smear or stain on the board representing flux residue after soldering and a variation from conventional appearance.
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Jan 20,2016
1183 views
Materials of inorganic acids and salts for surfaces of difficult solderability. Also called acid fluxes.
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Jan 20,2016
555 views
Marks placed inside the edges of PCB corners to align and register the layers.
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Jan 20,2016
525 views
A corrosivity test for fluxes in which the compound’s reaction to a copper film vacuum-deposited on a glass plate is noted.
Shiny Li
Jan 20,2016
545 views
Quality electrolytic copper used to form conductive patterns on printed circuits. It is available in a number of weights (thickness) the traditional weights are 0.5, 1 and 2 ounces per square foot. (1...
Shiny Li
Jan 20,2016
547 views
A material, usually supplied in large sheets, consisting of a base material to one or both sides of which a thin copper foil is boned. Synonym: laminate.
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Jan 20,2016
531 views
A procedure in which voltage is applied to two interconnected lands to ascertain the presence or absence of current flow.
Shiny Li
Jan 20,2016
509 views
An impurity or foreign substance whose presence on printed wiring assemblies could electrolytically, chemically, or galvanically corrode the system.
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Jan 20,2016
0 views
The distance between the centre lines of adjacent contact areas.
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Jan 20,2016
452 views
The electrical resistance of the metallic surfaces at their interface in the contact area under specified conditions.
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Jan 20,2016
540 views
The common area between a conductor and a connector through which the flow of electricity takes place.
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Jan 20,2016
629 views
A protrusion of the Printed Circuit Board edge that is manufactured to a configuration to mate with a receptacle that provides electrical and/or mechanical junction between the Printed Circuit Board a...
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Jan 20,2016
597 views
One plug or receptacle which can be easily joined to or separated from its mate. Multiple-contact connectors join two or more conductors with others in one mechanical assembly.
Shiny Li
Jan 20,2016
640 views
A thin dielectric cover brushed, dipped or sprayed over parts and circuits of PCBs for environmental and mechanical protection.
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Jan 20,2016
527 views
A single conductive path in conductive pattern. A PCB has at least one layer of conductors. Synonyms: path, trace.
Shiny Li
Jan 20,2016
599 views
The observable width of the pertinent conductor at any point chosen at random on the printed board, normally viewed from vertically above unless otherwise specified.
Shiny Li
Jan 20,2016
491 views
The distance between the edge of a conductor and the edge of a supported or unsupported hole.
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Jan 20,2016
553 views
The thickness of the conductor at any point chosen at random on the printed board, normally viewed from vertically above unless otherwise specified.
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Jan 20,2016
495 views
The average or minimum (as specified) distance between the adjacent edges of conductors on the same layer of a printed board.
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Jan 20,2016
486 views
| Ranking | Name | Answers |
|---|---|---|
| 1 | PCBWay Team | 6 |
| 2 | Engineer | 1 |
| 3 | Stephen Newport | 1 |
