From Digital Systems Design with FPGAs and CPLDs

3.1 Introduction

Within an electronic system, the printed circuit board (PCB) fulfils an essential role in which to mount the main electronic components, whether by soldering or by the use of fixing aids such as screws, and the means by which the electronic components are electrically connected to form the required electrical circuit, using metal tracks patterned onto the PCB and solder joints.

Figure 3.1 shows a 3-D graphical representation of an example PCB with models for the components placed on the PCB in their intended positions. A number of PCB design tools (for example, the Altium Protel PCB design software) provide for a 3-D viewing capability that enables the designer to view the PCB as it would appear in the final fabricated PCB with components inserted prior to PCB fabrication. The main base (commonly referred to as the substrate) is the insulating material, and tracks are patterned into it. Here, the electronic components are mounted to the top of the board, although components may also be mounted to both the top and bottom.


Figure 3.1: Graphical representation of an example PCB (top view)

In this example, the board is rectangular and 1.6 mm thick; actually this PCB was designed to be Eurocard size (160 mm 100 mm [6.3 ? 3.94 ?]). However, the actual shape of the PCB can be decided by the designer (restricted only by the manufacturing capabilities and cost to manufacture) to fit into the appropriate housing requirement...

Copyright Elsevier Ltd. 2008 under license agreement with Books24x7

Products & Services
PCB Pins and Receptacles
PCB pins and PCB receptacles are electronic interconnect devices for printed circuit boards (PCB). PCB pins are male connectors. PCB receptacles are female connectors.
Wire to Board Connectors
Wire-to-board connectors are used to interconnect printed circuit boards (PCBs) by using connectors attached to wires.
PCB Design and Layout Services
PCB design and layout services providers generate schematics and CAD files for printed circuit boards.
Board to Board Connectors
Board to board connectors are used to connect printed circuit boards (PCB). Each terminal connects to a PCB.
Printed Circuit Board (PCB) Fabrication Services
Printed circuit board (PCB) fabrication services design and fabricate circuit boards. They differ from electronic manufacturing services, which populate and assemble boards. 

Topics of Interest

4.1 Introduction Design languages provide the means by which to describe the operation of both software programs and hardware. These descriptions, usually text based, are developed and stored as...

Virtually every electronic circuit built nowadays uses a printed circuit board (pcb) as both its interconnecting medium and mechanical mounting substrate. The pcb is custom-designed for the circuit it...

Analysis of Circuit Board Performance Although you may consider such tools as a time-domain reflectometer or an RF network analyzer as belonging strictly to a communications lab, these can aid...

Desirable electrical characteristics of a circuit and its PCB include low noise, low distortion, low cross talk, and low radiated emissions, to name a few. The purpose of this chapter is to introduce...

Desirable electrical characteristics of a circuit and its PCB include low noise, low distortion, low cross talk, and low radiated emissions, to name a few. The purpose of this chapter is to introduce...