Printed Circuit Board Assemblies
From cell phones to home appliances, PCBs are the foundation of most modern electronic devices. These boards contain many intricate components that are able to perform a wide variety of tasks. The technology that is used to make them is continually evolving, opening up new applications.
A PCB is a bare printed circuit board assemblies that is then populated with components to form a functional assembly, also known as a printed circuit board assembly (PCBA). The process of assembling a PCB is called “manufacture.” The final product can be tested for quality, and it is important to follow strict guidelines in this stage to maintain the integrity of the finished product.
The most common industry to utilize a PCB is the telecom sector. This industry requires a lot of different types of PCBs due to the wide array of equipment it uses. Some of the equipment must be kept in stable indoor environments, while other infrastructure must be able to withstand outdoor elements such as storms and extreme temperatures. PCBs that are made for this sector include LED displays and indicators, phone switching systems, modems and routers.
What Industries Commonly Utilize Printed Circuit Board Assemblies?
Another industry that commonly utilizes a PCB is the medical field. PCBs are used to power a multitude of medical device such as pacemakers, X-ray machines and CAT scan equipment. Some of the most advanced PCBs are designed to be as small and lightweight as possible, while others require high-density construction to accommodate their specific functions.
A PCB can be constructed using through-hole or surface-mount technology. In through-hole construction, the component leads are inserted into holes on the PCB and soldered to copper traces. The components are held in place on the board by metal pads or lands that line up with the conductive holes on the surface of the PCB. A paste stencil is often used on these pads, and solder paste is applied using a thin metal (or plastic) stencil that lines up with the pad locations.
Surface mount is the dominant method of assembly for most contemporary PCBs. In this type of construction, the component leads are deposited directly onto the PCB. The pins on the component line up with conductive pads or lands on the surface of the PCB, and are soldered to them with a heated soldering iron. A small blob of solder is sometimes used as a temporary jumper between two adjacent pins to prevent unwanted shorts.
While the earliest PCBs were created in the late 1800s, the technology has rapidly evolved since then. The advancements in the electronics industry have enabled PCBs to become more compact, more versatile and less expensive, leading to their widespread use. Today, you can find a PCB in most consumer products such as smartphones, tablets, TVs and MP3 players. PCBs are also increasingly being used in the workplace, including for IT equipment and robotics. This technology can help businesses increase efficiency and productivity, while keeping prices low. This can be especially beneficial for small companies and startups that may not have the resources to spend on more sophisticated IT equipment.
