News

The Surface Wettability of Circuit Board SMT Chip Processing You are here:

by Marketing PCB HERO
Surface wetting of SMT chip proofing refers to a phenomenon when the solder spreads and covers the surface of the metal to be soldered during sold...
Posted in PCB, pcba

Printed Circuit Boards Glossary:Design,Fabrication and Assembly-Z

by Licky Li
Z-Stroke The movement of the head of a component placement machine in the vertical place for parts orientation and insertion.
Posted in PCB, PCB design, PCB fabrication, pcba

Printed Circuit Boards Glossary:Design,Fabrication and Assembly-Y

by Licky Li
Yield The ratio of usable parts at the end of a manufacturing process to the number of components submitted for processing.
Posted in PCB, PCB design, PCB fabrication, pcba

Printed Circuit Boards Glossary:Design,Fabrication and Assembly-W

by Licky Li
Wicking Capillary absorption of liquid along the fibres of the base material. Whisker A needle-shaped metallic growth on a printed circuit board. W...
Posted in PCB, PCB design, PCB fabrication, pcba

Printed Circuit Boards Glossary:Design,Fabrication and Assembly-V

by Licky Li
Voltage Plane A conductor or portion of a conductor layer on or in a printed board which is maintained at other than ground potential. It can also ...
Posted in PCB, PCB design, PCB fabrication, pcba

Printed Circuit Boards Glossary:Design,Fabrication and Assembly-U

by Licky Li
Unsupported Hold A hole containing no conductive material nor any other type of reinforcement. Underwriters’ Symbol A logotype authorized for place...
Posted in PCB, PCB design, PCB fabrication, pcba

Printed Circuit Boards Glossary:Design,Fabrication and Assembly-T

by Licky Li
Twist The deformation of a rectangular sheet, panel or printed board, that occurs parallel to a diagonal across its surface in such a way that one ...
Posted in PCB, PCB design, PCB fabrication, pcba

Printed Circuit Boards Glossary:Design,Fabrication and Assembly-S

by Licky Li
Swaged Lead A component lead wire that extends through a hole in a printed board and its lead extension is flattened(swaged)to secure the component...
Posted in PCB, PCB design, PCB fabrication, pcba

Printed Circuit Boards Glossary:Design,Fabrication and Assembly-R

by Licky Li
Rosin  A hard, natural resin (nowadays also synthetic),consisting of abietic and primaric acids and their isomers, some fatty acids and terpene hyd...
Posted in PCB, PCB design, PCB fabrication, pcba

Printed Circuit Boards Glossary:Design,Fabrication and Assembly-P

by Licky Li
PWB Printed Wiring Board; same as PCB. Pull Strength See Bond Strength. PTH Plated through-holes. Plating the holes on their internal wall. Product...
Posted in PCB, PCB design, PCB fabrication, pcba

Printed Circuit Boards Glossary:Design,Fabrication and Assembly-O

by Licky Li
Overhang Increase in printed circuit conductor width caused by plating build-up or by undercutting during etching. Outgrowth The increase in conduc...
Posted in PCB, PCB design, PCB fabrication, pcba

Printed Circuit Boards Glossary:Design,Fabrication and Assembly-N

by Licky Li
NPTH Non plated though-hole. Non-wetting A condition whereby a surface has contacted molten solder, but has had none of the solder adhere to it. No...
Posted in PCB, PCB design, PCB fabrication, pcba