Electronic Glossary

Quad Flat Pack, a fine-pitch SMT package that is rectangular or square with gull-wing shaped leads on all four sides. The lead pitch of a QFP is typically either 0.8mm or 0.65mm, although there are variations on this theme with …

Quadruple in-line package

What’s QSOP Package?   Quarter-Size Small Outline Package (QSOP) is a small rectangular surface-mount plastic package with gull wing leads protruding out of its longer sides. The Quarter-size SOP comes in two standard body widths: the narrow body which has …

Rolled Annealed (RA) Copper, has been used extensively in the flex circuits manufacturing and rigid-flex PCB fabrication for decades. The grain structure and smooth surface is ideal for dynamic, flexible circuitry applications. Another area of interest with rolled copper types …

What is a Reactance?   Radar (radio detection and ranging) is a detection system that uses radio waves to determine the distance (ranging), angle, or velocity of objects. It can be used to detect aircraft, ships, spacecraft, guided missiles, motor …

Radial Lead is a through-hole electronic component package in which the wire leads for connection or solder comes from the same side of the component. Typically, the radial leads are closely positioned next to each other. Twin lead electronic components designed …

Random Access Memory (RAM) is a device that stores information, which can be both written and read many times. Any part of the memory can be accessed directly through an address. Data in RAM cells can be erased or changed …

Raspberry Pi is a series of small single-board computer (SBCs) developed in the United Kingdom by the Raspberry Pi Foundation in association with Broadcom. The Raspberry Pi project originally leaned towards the promotion of teaching basic computer since in schools …

What is Reactance in PCB?   Reactance, also known as Electrical Reactance, is defined as the opposition to the flow of current from a circuit element due to its inductance and capacitance. An ideal resistor has zero reactance, whereas ideal …

The power value in “volt amps” obtained from the product of source voltage and source current in a reactive circuit. Also called imaginary power or wattles power.