A company that manufactures PCBs, or printed circuit boards, is an electrical assembly company that solders components to the boards. The components are then assembled into a complete circuit. The manufacturer of printed circuits uses the board design to create pads and copper tracks of metal on layers of insulating material.
What Are Printed Circuit Boards?
PCBs are useful components within various electrical assemblies. There are many different kinds of PCBs depending on the type of electronic device they are used in. Examples include TV sets, allowing for the transmission and reception of television signals, appliances such as a microwave oven that controls time and power for heating food, or even ATM machines to give access to a bank account through the data transmission system.
In these various applications, PCBs contain electronic components that control electrical signals and recognize keystrokes on computers or other devices with input capability. They can also be used to log information in a database, which is one of the most common uses for printed circuits.
Three Classes Of PCBs
The type of circuitry used within each PCB depends on the purpose of the device. Circuit boards are divided into three classes: A, B, and C. Class A is the most common type that contains complex circuitry and therefore has greater resistance to heat. This means that it can withstand higher temperatures than Class B or C boards without being damaged.
The prices for PCBs also reflect the difficulty and complexity of the circuitry on each board. Class A boards tend to be the least expensive, and lower-end Class B boards are cheaper than their higher quality counterparts.
Most PCBs are manufactured using photolithography, which is a thin coating of epoxy that is coated onto a copper substrate. The photolithography process is then applied across multiple layers of copper circuits until they are placed in a specific pattern to create the desired circuit board design. The circuit boards are also finished with a layer of protective lacquer to seal them.
These layers are then placed onto an aluminum sheet that is polished and cut into the exact size needed for each application. This form of construction allows for PCBs to be cut into shapes that are almost exactly the same as their original design, making them practically indistinguishable from a manufactured circuit board. These are then packaged and sold to buyers, who will use them in their devices.
How Do You Manufacture PCBs?
PCB manufacturing companies build and assemble circuit boards in the same manner any other company produces electronic equipment. They first need to determine the exact specifications of their customers’ needs, or design a new product based on features that are necessary for the sake of efficiency and compatibility. Once this is complete, the manufacturer takes the PCB design to a manufacturer of printed circuits where its components are etched onto an aluminum surface.