Electronic Glossary

What Is WLCSP?   WLCSP or WL-CSP (Wafer-level Chip Scale Packaging) (sometimes WCSP) refers to the technology of packaging an integrated circuit at the wafer level, instead of the traditional process of assembling individual units in packages after dicing them …

WSON is Plastic Small-Outline No-Lead (SON) Package defined by JEDEC. DMB/PWSON and DOD are common seen WSONs from Texas Instruments. It varies from various pins, similar to SOIC, but generally with 8 pins (all also have exposed thermal pads). It’s …

The x-Axis is the horizontal (left and right) axis of a two-dimensional plot.

An X-Out occurs when on an panel of PCBs a single board fails electrical test or final inspection and are “X’ed out” with a marker to designate that they are not to be used. Some customers or end users specify …

An inspection process used mainly for determining the alignment of PCB internal-layer features (pads, conductors, etc.) in multilayer board manufacturing. It’s also used to determine the quality of solder joints that cannot be inspected by direct visual means in SMT …

(eXclusive OR) A Boolean logic operation that is widely used in cryptography as well as in generating parity bits for error checking and fault tolerance. XOR compares two input bits and generates one output bit. The logic is simple. If …

The Y-Axis is the vertical (up and down) axis of a two-dimensional plot.

Simplistically, the term is used for the ratio of good assemblies at the end of a process to the number of assemblies originally started, expressed as a percentage. In practice, an apparently high yield can disguise the fact that substantial …

Where the xy-plane is horizontal then Z-axis would point up from the point where x and y meet.

What’s Zener Diode?   A Zener Diode is a special type of diode designed to reliably allow current to flow “backwards” when a certain set reverse voltage, known as the Zener Voltage, is reached. It is a silicon semiconductor device …