Electronic Glossary

Fan-In Wafer-Level Package (FI-WLP)   Fan-In Wafer-Level Package (FI-WLP) refers to the technology of packaging an integrated circuit (IC) at the wafer level, instead of the traditional process of assembling individual dies into packages after dicing them from a wafer. …

PCB Fiberglass, or Fiber Glass within the PCB CCL and PP is constructed by weaving fibers of glass yarn together to form fabric-like fiberglass sheets. These sheets are then impregnated with an epoxy resin to form the core (cured resin) and …

A large conductive area such as a ground or power plane.

The junction where to surfaces meet, as in solder fillet.

What’s a Filter?   A Filter is a circuit capable of passing (or amplifying) certain frequencies while attenuating other frequencies. Thus, a filter can extract important frequencies from signals that also contain undesirable or irrelevant frequencies. In the field of …

IPC has no specific definition for a Fine Line in printed circuit boards, but people in PCB industry generally define fine lines as boards with 2 through 5 mil line and spacing. When your board’s minimum line and spacing is …

What’s Fine Pitch Technology?   Fine Pitch Technology (FPT) is the term used to describe the printed circuit board (PCB) assembly technology for a family of integrated circuit (IC) packages distinguished by the fine spacing between their small leads. Fine …

Finished Copper is the weight or thickness of copper the PCB will have on its surface after electroless plating and electroplating.

In computing, Firmware is a specific class of computer program (/software) that provides the low-level control for a device’s specific hardware. Firmware can either provide a standardized operating environment for more complex device software (allowing more hardware-independence), or, for less …

A first article is a test run of a particular manufacturing process. It is useful to verify that all manufacturing parameters are correctly in place. For example when routing PCBs away from a production panel a single board will be …