Printed Circuit Boards
Written by a world-renowned electronics expert, this reader-friendly guide helps engineers and technicians solve issues in PCB layout, fabrication, assembly, and testing.
TABLE OF CONTENTS Printed Circuit Boards
Glossary
- Acceptance Test
- The tests that determine the acceptability of boards as agreed to by purchaser/vendor.
- Accepted Quality Level (AQL)
- The maximum number of defects per 100 units that can be considered satisfactory as a process average.
- Access Holes
- A series of holes in successive layers. Each set has a common centre or axis. The holes of a multi-layer printed board provide access to the surface of the land in one of the layers of the board.
- Accuracy
- The deviation of the measured or observed value from the accepted reference.
- Acrylic Resin
- A thermosetting, transparent resin.
- Activating
- A chemical treatment for conditioning the surface of non-conductive materials for improved adhesion.
- Additive Process
- A process for obtaining conductive patterns by the selective deposition of conductive material on a clad or unclad base material.
- Adhesion Layer
- The metal layer that adheres a barrier metal to a metal land on the surface of an integrated circuit.
- Adhesive
- A substance such as glue or cement used to fasten objects together. In surface mounting, an epoxy adhesive is used to adhere SMDs to the substrate.
- Aging
- The change of a property, e.g. solderability, with time.
- Air Gap
- The non-conductive air space between current carrying conductors such as traces, pads, ground planes, etc.
- Algorithm
- A procedure for solving a problem, usually mathematical.
- Alkyd
- A thermosetting resin with good electrical properties used for moulding the bodies of components.
- Ambient
- The surrounding environment coming into contact with the system or PCB in question.
- Analog Circuit Simulator
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