Many friends can not tell what is PCB what is IC, to know in the manufacturing process of electronic products PCB and IC are very important components, but many friends can not tell often think is the same thing, in order to let everyone better understand today SCSPCBA will take you to understand the difference and function of the two major components.
The PCB (Printed Circuit Board) is an important electronic component, the printed circuit Board (PCB) is the support body of electronic components, and the carrier in which electronic components are electrically connected. Because it is produced by electronic printing, it is called printed circuit board, also known as printed circuit board. Almost every electronic device, from small electronic watches and calculators to large computers, communication electronics and military weapon systems, has integrated circuits and other electronic components. In order to make the electrical interconnection between the components, printed boards are used.
Printed circuit board was the earliest use of paper - based copper - coated printed board. Since the advent of the semiconductor transistor in the 1950s, demand for printed boards has soared. Especially with the rapid development and wide application of integrated circuit, the volume of electronic equipment is getting smaller and smaller, and the density and difficulty of circuit wiring are getting bigger and bigger, which requires the printed board to be updated constantly. At present, the varieties of printed boards have developed from single panel to double panel, multilayer board and flexible board; The structure and quality have been developed to ultra-high density, miniaturization and high reliability. New design methods, design supplies and board - making materials, board - making technology continue to emerge. Today's printed circuit board is mainly composed of circuit and picture, dielectric layer, solder proof ink, screen printing, surface treatment.
From the appearance, the background color of PCB is usually green, but not limited to green, this layer of background color mainly depends on the color of the solderproof ink used in the solder resistance layer. A screen printing surface is also printed on top of the solder resistance layer, usually with text and symbols to identify the position of the part.
The use of printed circuit board as a component has the following advantages:
1.can be high-density
Over the years, the high density of printed boards has been able to develop correspondingly with the improvement of integrated circuits and the advancement of installation technology.
Through a series of inspection, testing and aging test and other technical means, can ensure the long-term (service life is generally 20 years) and reliable work of PCB.
The requirements of various performance of PCB (electrical, physical, chemical, mechanical, etc.) can be realized through design standardization and normalization. This design time is short, high efficiency.
PCB adopts modern management, can achieve standardization, scale (quantity), automatic production, so as to ensure the consistency of product quality.
A relatively complete test method and test standard have been established, which can be used to test and identify the qualification and service life of PCB products through various test equipment and instruments.
PCB products are not only convenient for standardized assembly of various components, but also can be automated, large-scale mass production. In addition, the PCB and other components for the whole assembly, but also can form a larger part, system, until the whole machine.
Because PCB products and components are assembled in a standardized design and scale production, these components are also standardized. Therefore, once the system fails, it can be replaced quickly, conveniently and flexibly, and the system can be restored quickly.
PCB also has some other advantages, such as system miniaturization, lightweight, high-speed signal transmission, reduce wiring and assembly errors, conducive to circuit interchange, conducive to electronic equipment miniaturization, conducive to equipment production mechanization and automation.
An integrated circuit is a small electronic device or component. Using a certain process, the required transistors, resistors, capacitors and inductors in a circuit and wiring interconnect together, made on a small or several small pieces of semiconductor wafer or dielectric substrate, and then encapsulated in a shell, to become a micro structure with the required circuit functions; All the components have been formed as a whole in structure, which makes the electronic components towards the micro, low power consumption, intelligence and high reliability a big step forward. It is represented in the circuit by the letter IC. The integrated circuit was invented by Jack Kilby (integrated circuit based on Germanium (Ge)) and Robert Neuth (integrated circuit based on silicon (Si)). The majority of today's semiconductor industry uses silicon-based integrated circuits.
After today's introduction, I believe that you have a deeper understanding of PCB and IC. If you have any questions or doubts about PCB and PCBA, please feel free to contact us at any time. We have a professional team who can answer your questions. SCSPCBA will do our best to serve you!