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What is a pcb circuit board?
Printed circuit board, also known as printed circuit board, printed wiring board, commonly known as PCB (Printed circuit board) or PWB (Printed wire board), is the support of electronic devices, in which metal conductors are used as circuits to connect electronic components.
Traditional circuit boards use the method of printing etching resist to make circuit lines and drawings, so they are called printed circuit boards or printed circuit boards. Due to the continuous miniaturization and refinement of electronic products, most circuit boards currently use attached etching resist (laminated or coated), and after exposure and development, they are etched to make circuit boards.
PCB was first used for paper-based copper-clad printed boards. Since the emergence of semiconductor transistors in the 1950s, the demand for printed boards has risen sharply. In particular, the rapid development and widespread application of integrated circuits have made the size of electronic equipment smaller and smaller, and the density and difficulty of circuit wiring have become increasingly greater, which requires the continuous updating of printed boards. At present, the varieties of printed circuit boards have developed from single-sided boards to double-sided boards, multi-layer boards and flexible boards; the structure and quality have also developed to ultra-high density, miniaturization and high reliability; new design methods, design supplies, board materials and board processes are constantly emerging.
what is a pcb circuit board
What exactly is pcb circuit board?
PCB, whose Chinese name is printed circuit board, is the core of all electronic devices and the carrier of electrical connection of electronic components. Therefore, the reliability of PCB is self-evidently important to all electronic products, especially for those high-end electronic devices.
Not all PCBs are green, PCBs can have many different types and colors.
What is a pcb circuit board additionally?
In short, PCB is to use etching or printing on non-conductive materials (such as glass fiber or resin) to build conductive paths to achieve mechanical support between components, realize wiring and electrical connection or electrical insulation between them, and provide the required electrical characteristics.
Depending on the type of PCB, its construction method is also different. For example, a multi-layer PCB consists of three or more layers of insulating materials and conductive copper layers, and components are connected through wires and pads.
Illustration of a multi-layer PCB.
Another example is HDI PCB, which is defined by IPC-2226 as a PCB with higher wiring density per unit area than conventional types. Compared with conventional PCBs, high-end PCBs have finer line spacing ≤ 100 μm / 0.10mm, smaller through holes (<150 μm) and minimum pads<400 m="" as="" well="" higher="" pad="" density="">20/cm2), and contain blind or buried vias.
PCBs provide mechanical support and electrical pathways for components such as resistors, capacitors and chips.
Importance of High Reliability PCBs
PCBs account for a relatively small proportion of the total value of electronic products, but this does not affect their importance – defects in PCBs can lead to serious consequences such as failure or downtime of electronic products, making quality and reliability one of the most important PCB procurement criteria for customers.
Building the foundation for reliable PCB-A
PCBA is a complete functional module formed by assembling electronic components on a PCB. Therefore, ensuring the high quality and reliability of the PCB is very important for PCBA. Defective PCBs may cause the entire PCBA with expensive components to be scrapped.
what is a pcb circuit board
PCB design software
Altium Designer - an integrated electronic product development system.
OrCAD - an electronic design automation software package for electronic engineers to design printed circuit boards.
KiCad - is a free software for printed circuit board design, originally launched by Frenchman Jean-Pierre Charras in 1992 and now maintained by the KiCad developer team. KiCad currently supports 23 language versions including English, French, German, Italian, Chinese, and Japanese.
So if someone asks you what a pcb circuit board is, maybe you have a better understanding of what is a pcb circuit board!