Shiny Li
Jan 28,2016
600
Solder Bridging
The unwanted formation of a conductive path of solder between conductors.
Shiny Li
Jan 28,2016
608
Solder (Soft)
A metal alloy with a melting temperature that is below 450℃.
Shiny Li
Jan 28,2016
708
Soak
The period after pre-heat and before re-flow peak temperature where the internal temperature differences between parts allowed to equalize.
Shiny Li
Jan 28,2016
995
Snap-off
The return of a stencil to normal level after deflection by the pressure of the squeegee moving across the surface.
Shiny Li
Jan 28,2016
767
Snap-off Distance
The space between the top surface of the substrate and the underside of the stencil when the squeegee is not in play.
Shiny Li
Jan 28,2016
595
SMT
Surface Mount Technology. Defines the entire body of processes and components which create printed circuit assemblies without components with leads that pierce the board.
Shiny Li
Jan 28,2016
1066
Smear
Resin, smeared over the edge of an internal copper layer of a multi-layer board during drilling, which prevents the layer from making electrical contact with the barrel of the hole.
Shiny Li
Jan 28,2016
686
SMD
Surface Mounted Device. Any component or hardware element designed to be mounted to a printed circuit board (PCB) without penetrating the board.
Shiny Li
Jan 28,2016
710
Slump
A spreading of the solder paste after printing but before re-flow soldering. If excessive, a loss of definition may result.
Shiny Li
Jan 28,2016
549
Single-image Production Master
A production master used in the process of making a single printed board.
Shiny Li
Jan 28,2016
628
Shingle-sided Board
A printed board with a conductive pattern on one side only.
Shiny Li
Jan 28,2016
592
Simulation
The process of creating a virtual representation(a computer model)of an electronic component, circuit board, or system and applying virtual test signals to the model to verify its functionality and po...
Shiny Li
Jan 28,2016
819
Silkscreen
Often used for legend print and means the printed reference designators on a printed wiring boards.
Shiny Li
Jan 28,2016
695
Signal
An electrical impulse of a pre-determined voltage, current, polarity and pulse width.
Shiny Li
Jan 28,2016
584
Signal Plane
A conductor layer intended to carry signals, rather than serve as a ground or other fixed voltage function.
Shiny Li
Jan 28,2016
615
Signal Conductor
An individual conductor used to transmit an impressed signal.
Shiny Li
Jan 28,2016
644
Short
Short-circuit, An abnormal connection of relatively low resistance between two points of a circuit or conductors from different nets either touch or some closer than the minimum spacing allowed for th...
Shiny Li
Jan 28,2016
1688
Shielding, Electronic
A physical barrier, usually electrically conductive, designed to reduce the interaction of electric or magnetic fields upon devices, circuits or portions of circuits.
Shiny Li
Jan 28,2016
966
Shadowing
A condition occurring during etching in which the dielectric material, in intimate contact with the foil, is incompletely removed though acceptable etching may have been achieved elsewhere. In re-flow...
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