Shiny Li
Jan 20,2016
1233
Clearance Hole
A hole in the conductive pattern larger than, but concentric with, a hole in the printed board base material.
Shiny Li
Jan 20,2016
1208
Clamshell Fixture
An in-circuit test fixture to probe both sides of a PCB.
Shiny Li
Jan 20,2016
646
Clad
(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
740
Clad or Cladding
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
684
Circumferential Separation
A crack in the plating extending around the entire circumference of a plated through-hole.
Shiny Li
Jan 20,2016
626
Circuit Tester
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
792
Chip Testers
Large computer-based systems that test individual ICs, especially LSI and VLSI.
Shiny Li
Jan 20,2016
682
Chemically-deposited Printed Chip on board
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
677
Chemical Hole Clearing
The chemical process for cleaning conductive surfaces exposed within a hole ( see also “ Etch-back ”).
Shiny Li
Jan 20,2016
651
Chemical Conversion Coating
A protective coating produced by the chemical reaction of a metal with a chemical solution.
Shiny Li
Jan 20,2016
2416
Check Plots
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
608
Characteristic Impedance
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
1042
Chamfer
A corner which has been rounded or shaped to eliminate an otherwise sharp edge.
Shiny Li
Jan 20,2016
886
Catalyst
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.
Shiny Li
Jan 20,2016
696
Cast Adhesive
Special sheet adhesive material used for bonding polyimide multi-layer boards and flexi-rigids ( similar to prepreg = B-Stages ).
Shiny Li
Jan 20,2016
1245
Capillary Action
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.
Shiny Li
Jan 20,2016
819
Capacitive Coupling
The electrical interaction between two conductors caused by the capacitance between them.
Shiny Li
Jan 20,2016
0
CAD/CAM system
Computer-aided design is the use of special software tools to formulate printed circuit patterns. Computer-aided manufacturing translates such designs into actual products.
| Ranking | Name | Answers |
|---|---|---|
| 1 | PCBWay Team | 4 |
| 2 | Engineer | 1 |
| 3 | Ibrahim TKR | 1 |
| 4 | Engineer | 1 |
| 5 | Adilson Pierog | 1 |
| 6 | Lucas Laupichler | 1 |
