Printed circuit boards are done through point to point wiring and other technical procedures to ensure wire connections are in place. The gas-tight connection, in fact, makes it a highly changeable and durable item for any electronic gadget. As electronics evolved from vacuum tube to integrated silicon circuit, the cost and size of components have significantly decreased as well. Today, electronics is increasingly becoming a prevalent part among consumer goods, making it important to guarantee quality. With pcbnet, you are sure to achieve the exact PCBs you need for your current business requirements.
The boards contain pads and lines that connect various points to ensure functionality. Components and connectors are electrically linked to each piece while allowing power and signal to be directly routed between the physical devices. In addition, the process called soldering helps to attach electronic components onto the board in a more secure way. Since solder is a metal connection, it significantly serves as the solid mechanical adhesive within the circuit board. When it comes to composition, PCBs are like layers of lasagna or cake with alternating layers composed of various materials laminated together to achieve adhesive and heat.
Essential Components of PCBs
The following are the basic components that make up a standard printed circuit board offered by pcbnet:
This is the substrate or base material that is usually in the form of fiberglass. Before, the common designator for fiberglass is the FR4. The solid core actually provides thickness and rigidity to circuit boards. In addition, there are flexible boards made of high-temperature Kapton or equivalent plastic material.
The second layer is composed of copper foil laminated to the PCB with adhesive and heat. In general, double-sided PCBs’ copper is carefully applied on both sides to secure the base material or substrate. However, in low-cost electronics, the circuit board may contain copper on one side only. When we say 2-layer or double-sided board, we refer to the total number of thin copper layers within the PCB.
3. Solder mask
The top layer of the thin copper foil is what we call solder mask layer. This layer provides green color for the PCB. It’s superimposed onto the thin copper layer in order to securely insulate the traces coming from the accidental contact via other metal, conductive and solder bits. Also, the layer supports the user in soldering the board with accuracy to avoid solder jumpers.
The silkscreen layer, which is usually in white color, is applied above the solder mask layer. The purpose is to add letters, symbols and numbers so that the PCBs will be easy to assemble through the indicators provided on the board. At pcbnet, we usually use silkscreen to point out the specific functions of all the LEDs or pins.
Apart from the above mentioned components, we also want to tackle about the immersion tin. ISn is the metallic finish placed by using chemical disarticulation reaction which is directly applied over the base metal within the PCB. However, there are some drawbacks such as the growth of tin whiskers in the printed circuit board industry. But the advantages of ISn include flat surface, no pb, re-workable, and top choice in terms of press fit-in insertion. If you are interested to know more about the components involved within the circuit board, please don’t hesitate to check out our pcbnet website.
Our team will be glad to show you how the entire PCB manufacturing process works. In addition, we will guide you in the right fabrication so that you can provide quality electronic products to your customers around the world. Just remember to choose the best surface finish specifically needed by your project to avoid possible issues in the usability of the product. If you need help in handling material costs and performance requirements, we’re here to help you. Call us today and get more details.