Electronic Glossary

Single Pole Single Throw (SPST), two terminal switch or relay that can open or close one circuit.

See Sputtering

What’s Sputtering?   Sputtering, also called Sputter Deposition/Coating, is a PVD (Physical Vapor Deposition) class of Thin Film technology. The materials to be coated (the sputtering target) is bombarded with plasma ions and the removed particles enter into the gas …

Shrink Quad Flat Pack (SQFP). As with the SOP, the QFP has been developed to take up less valuable board area. ‘Shrink’ is the term associated with reducing the plan dimensions of the package, and is always accompanied by a …

What’s A Square Wave in PCB?   A Square Wave is defined as a non-sinusoidal periodic waveform in which the amplitude alternates at a steady frequency between minimum and maximum values, with the same duration at minimum and maximum. In …

Static Random Access Memory (SRAM, or Static RAM) is a type of non-volatile memory commonly used in caching, which is faster (and more expensive) than dram because it does not require “refreshing”.

A Solid-State Drive (SSD) is a solid-state storage device that uses integrated circuit assemblies to store data persistently, typically using flash memory, and functioning as secondary storage in the hierarchy of computer storage. It is also sometimes called a solid-state …

Shrink Small Outline Package (SSOP) is a smaller or ‘shrunk’ version of the SOIC package, having a compressed body and a tightened lead pitch. Shrink SOP is leadframe based, plastic encapsulated package that are well suited for applications requiring optimum …

Stackup, also called Stack-up. A stackup is defined with a number of copper layers and insulating layers (solder mask, PP, adhesive, EMI) that make up a PCB before designing the final layout of the board. Through the stack-up, people understand …