Glossary & Acronyms

We understand that the jargon and terms we use to describe pcb fabrication and manufacturing can be confusing. We’ve prepared a comprehensive glossary to make the job a little easier.


A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
A
ACF Anisotropic conductive film
ACTIVE COMPONENT A component which adds energy to the signal it passes, e.g., transistors, rectifiers, diode, amplifiers, oscillators, mechanical relays and almost all IC’s.
AEA American Electronics Association.
ALKALINE A chemical that measures over 7 on a pH scale.
ANALOG CIRCUIT A circuit in which the output varies as a continuous function of the input, as opposed to a digital circuit.
ANDON BOARD A lighted overhead electronic display that gives the current status of the production system and alerts team members to emerging problems.
ANNULAR RING The copper ring around the hole in a printed wiring board.
AOI Automate Optical Inspection
AOT Automated optical test
APERTURE An indexed shape with a specified x and y dimension, or line-type with a specified width, used as a basic element or object by a photoplotter in plotting geometric patterns on film. The index of the aperture is its position or D code.
APERTURE LIST An ASCII text data file which describes the size and shape of the apertures used by a photoplotter for any one photoplot.
APICS American Production and Inventory Control Society.
APPROVED VENDOR LIST (AVL) Parts list specifying the approved manufacturer and part number.
AQL Acceptable Quality Level
ARRAY A group of printed circuits (called modules) arrayed in a panel and handled by both the board house and the assembly house as though it were a single printed wiring board.
ARTWORK Artwork for printed circuit design is photoplotted film, NC Drill File and documentation which are all used by a board house to manufacture a bare PWB.
ASCII American Standard Code for Information Interchange. ASCII is the basis of character sets used in almost all present-day computers.
ASIC Application-Specific Integrated Circuit
ASIC DESIGN Ability to design an application specific integrated circuit (ASIC) chip. An ASIC chip is custom designed for a specific application, in contrast to a general-purpose chip such as a microprocessor.
ASPECT RATIO The ratio of the circuit board thickness to the diameter of the smallest drilled hole
ATE Automated Test Equipment
ATG Automated Test Generation
AUTO-INSERTION (AI) A method/equipment used to insert pin-through-hole components to printed wiring boards (PWB’s).
AXI Automatic X-ray Inspection