Printed Circuit Boards (PCBs) are used in a wide variety of electronic devices, including radios, computers, pagers, and radar machines. The boards support and connect electrical components using traces, pads, and other features.
Because they can be used for a variety of different applications, printed circuit boards are available in several designs. Some of the major types include:
The single-sided PCB consists of only one layer of base material with one end coated with a very thin layer of metal, typically copper. It also includes a wide range of electronic components on one single side. This type of PCB is usually used in simple electronic devices.
The double-sided PCB is more popular than the single-sided boards. Both sides consist of metal conductive layers. They also contain other elements that allow designers to attach circuits on one side of the board to circuits on the other side of the board.
The rigid PCB consists of solid and rigid material such as fiberglass. The rigid material prevents the board from twisting. Great examples of rigid PCBs include motherboards found in computer towers.
The multilayer PCB is more complex and has at least three layers of conductive material. The boards include additional layers that are situated beyond the bottom and the top layers in a design that is similar to that of a double-sided configured board. Multilayer PCBs are used in a variety of devices, including computers, file servers, and satellite systems.
Unlike the rigid printed circuit boards, the flex board is made of a flexible plastic surface. This type of material allows the board to conform to a specific shape during its application. Additionally, unlike the rigid boards, they can be shifted or turned during use without harming the circuits.
As the name suggests, the rigid-flex board features elements combining those found in both the rigid and the flexible PCBs. These types of boards have been used in the military and aerospace industries for over two decades.
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