Shiny Li
Jan 28,2016
1463
Rosin
A hard, natural resin (nowadays also synthetic),consisting of abietic and primaric acids and their isomers, some fatty acids and terpene hydrocarbons, that is extracted from pine trees and subse...
Shiny Li
Jan 28,2016
1383
Rosin Flux
The mildest of solder fluxes and generally requiring added organic activating agents.
Shiny Li
Jan 28,2016
1311
Roadmap
A printed pattern of non-conductive material by which the circuitry and components are delineated on a board to aid in service and repair of the board.
Shiny Li
Jan 28,2016
1420
Right-angle Edge connector
A connector which terminates conductors at the edge of a printed board, which bringing the terminations our at right angles to the plane of the board conductors.
Shiny Li
Jan 28,2016
1315
Rheology
Science of flow ,is the study of the flow and deformation of matter and is particularly important with regard to colloidal systems.
Shiny Li
Jan 28,2016
1284
Re-working
The act of repeating one or more manufacturing operations for the purpose of improving the yield of acceptable part.
Shiny Li
Jan 28,2016
1451
Re-work
A manufacturing step or process that is repeated to bring a non-performing or non-conforming component or circuit to a functional condition.
Shiny Li
Jan 28,2016
1287
Reverse Image
The film pattern on a printed circuit board enabling the exposure of conductive areas for subsequent plating.
Shiny Li
Jan 28,2016
1260
Resist
Coating material used to mask or to protect selected areas of a pattern from the action of an etchant, solder, or plating. Also see Dry Film, Resists, Plating Resists and Solder Resists.
Shiny Li
Jan 28,2016
1414
Resin
A high-molecular-weight organic material with no specific melting point. A polymer.
Shiny Li
Jan 28,2016
1546
Resin Smear
Resin transferred from the base material onto the surface or edge of conductive pattern normally caused by drilling. Sometimes called epoxy smear.
Shiny Li
Jan 28,2016
1393
Residue
Any visual or measurable form of process-related contamination.
Shiny Li
Jan 28,2016
1265
Repeatability
The ability of a system to return to a specific parameter, said of equipment when evaluating its consistency of processing.
Shiny Li
Jan 28,2016
1233
Repair
The process of restoring the functional capability of a defective component or circuit.
Shiny Li
Jan 28,2016
1289
Reliability
The probability that a component, device or assembly will function properly for a defined period of time under the influence of specific environment and operational conditions.
Shiny Li
Jan 28,2016
1405
Relative Humidity
The radio of the quantity of water vapour present in the air to the quantity which would saturate the air at the given temperature.
Shiny Li
Jan 28,2016
2197
Registration
The alignment of a pad on one side of the printed circuit board or layers of a multi-layer board to its mating pad on the opposite side.
Shiny Li
Jan 28,2016
1214
Register Mark
A symbol used as a reference point to maintain registration.
Shiny Li
Jan 28,2016
1349
Re-flowing
The melting of an electro-deposit followed by solidification.
| 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 |
