Electronic Glossary

Gradual destruction of a metal or alloy due to chemical processes such as oxidation or the action of a chemical agent.

A flux that contains corrosive chemicals such as halides, amines, inorganic or organic acids that can cause oxidation of copper or tin conductors.

A counterbore is cylindrical flat-bottom hole that enlarges another drilled hole. It is typically used when a fastener, such as a socket head cap screw, is required to sit flush with the surface of the PCB.

A countersink is a conical hole added to a drilled hole to allow the head of a countersunk screw to sit flush with the surface of the PCB.

To electronically connect two circuits so that signal will pass from one to the other.

What’s CPGA Package?   The Ceramic Pin Grid Array (CPGA) is a square or rectangular through-hole ceramic package whose pins or leads are arranged in a square array at the bottom of the package body. The Ceramic PGA can either …

A Central Processing Unit (CPU), also called a Central Processor, main processor or just processor, is the electronic circuitry within a computer that executes instructions that make up a computer program. The CPU performs basic arithmetic, logic, controlling, and input/output …

What’s CQFP Package?   Ceramic Quad Flat Pack (CQFP) is a ceramic IC package with leads extending from all four sides of the package body. CQFP’s are predominantly square in shape, although rectangular variants do exist. The CQFP is just …

What’s Crosshatching in PCB?   Crosshatching (or Cross Hatch) of PCB planes refers to a technique wherein certain planes or other large areas of copper within a PCB is cross hatched copper, like a latticework in a screen door. The …

What Is Crosstalk in a PCB?   Crosstalk is an undesired electromagnetic coupling among the traces on a printed circuit board (PCB), even though the traces are not in physical contact with each other. Electromagnetic field disturbance can take place …