An enclosure that is located between the heating elements and the parts being processed that contains the atmosphere required for the re-flow soldering process.
Shiny Li
Jan 28,2016
636 views
A hole used for the mechanical mounting of a printed board or for the mechanical attachment of components to the printed board .
Shiny Li
Jan 28,2016
722 views
Also called back plane, or matrix board. A relatively large printed circuit board on which modules, connectors, sub-assemblies or other printed circuit boards are mounted and inter connections made by...
Shiny Li
Jan 28,2016
531 views
A separable unit in a packaging scheme displaying regularity of dimensions.
Shiny Li
Jan 28,2016
566 views
A chemically inert substance added to a resin to change its properties.
Shiny Li
Jan 28,2016
675 views
A component mounting technology that uses both through-hole and surface-mounting technologies on the same packaging and interconnecting structure.
Shiny Li
Jan 28,2016
540 views
The lack of dimensional conformity between successively produced features or terns.
Shiny Li
Jan 28,2016
594 views
A defect which is not likely to reduce the usability of the unit for its intended purpose, It may be a departure from established standard having no significant bearing on the effective use or operati...
Shiny Li
Jan 28,2016
583 views
The minimum allowable distance between adjacent conductors that is sufficient to prevent dielectric breakdown, between the conductors at any given voltage.
Shiny Li
Jan 28,2016
685 views
One thousandth (0.001) of an inch. Not to be confused with Mil (short for millimetre).1Inch=25.4mm; 1mil=0.0254mm.
Shiny Li
Jan 28,2016
610 views
A type of transmission line configuration which consists of a conductor over a parallel ground plane, and separated by a dielectric.
Shiny Li
Jan 28,2016
748 views
A destructive test procedure in which a section of specimen it cut and removed for close examination.
Shiny Li
Jan 28,2016
650 views
A deposited or plated thin metallic film used for its protective or electrical properties.
Shiny Li
Jan 28,2016
673 views
Base material covered with metal on one or both of its sides.
Shiny Li
Jan 28,2016
601 views
The contour or shape of molten solder as formed by surface tension forces in turn controlled by wetting.
Shiny Li
Jan 28,2016
1392 views
The temperature range over which the solder alloy melts .An alloy with a single melting point, rather than a melting range, is known as a eutectic alloy .
Shiny Li
Jan 28,2016
526 views
A metal electrode leadless face surface mount component that is round with metallic cap terminations.
Shiny Li
Jan 28,2016
735 views
A condition existing in the base laminate in the form of discrete white sports or crosses below the surface of the base laminate, reflecting a separation of fibres in the glass cloth at the weave inte...
Shiny Li
Jan 28,2016
899 views
The statistical mean average time interval, usually in hours, that may be expected between failures of an operating unit. Results should be designated actual. Predicted or calculated.
Shiny Li
Jan 28,2016
838 views
Moulded Carrier Ring. A tape of fine-pitch chip package named for the method of supporting and protecting the leads. The leads are left straight; the ends of the leads are embedded in a strip of plast...
Shiny Li
Jan 28,2016
637 views
| Ranking | Name | Answers |
|---|---|---|
| 1 | PCBWay Team | 9 |
| 2 | Xiaoyang Ma | 1 |
| 3 | Engineer | 1 |
| 4 | Christian Davies | 1 |
