BOOK_CONTENT
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...

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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.
Board to Board Connectors
Board to board connectors are used to connect printed circuit boards (PCB). Each terminal connects to a PCB.
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.
Reflow Ovens
Reflow ovens are used to perform reflow soldering of surface mount electronic components to printed circuit boards (PCB).

Topics of Interest

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