What is PCB?What is IC?

发布时间：2023-10-08 13:09
作者：AMEYA360
来源：网络
阅读量：1449

　　PCB and IC are both essential components in the field of electronics, but they serve different purposes and have distinct characteristics. Let’s see what are the differences between PCB vs IC. Keep reading!

What is PCB?What is IC?

　　What is PCB?

      PCB (Printed Circuit Board) is an important electronic component, a support for electronic components, and a carrier for electrical connections of electronic components. Because it is made using electronic printing, it is called a “printed” circuit board.

　　The current circuit board mainly consists of lines and patterns, a dielectric layer, holes (Through hole/via), a solder mask, and silkscreen, surface finish and other components.

　　Advantages of PCB1. High density: For decades, the high density of printed circuit boards has been developed with the improvement of integrated circuit integration and the advancement of mounting technology.

　　2. High reliability: Through a series of inspections, tests and aging tests, the PCB can be guaranteed to work reliably for a long time (usage period, generally 20 years).

　　3. Designability: For PCB various performance (electrical, physical, chemical, mechanical, etc.) requirements, printed board design can be realized through design standardization, with short time and high efficiency.

　　4. Productivity: Using modern management, it can carry out standardized, large-scale (quantity), automated and other production to ensure product quality consistency.

　　5. Testability: Relatively complete testing methods, testing standards, various testing equipment and instruments have been established to detect and identify the qualification and service life of PCB products.

　　6. Assemblability: PCB products not only facilitate standardized assembly of various components but also enable automated and large-scale mass production. At the same time, PCB and various component assembly parts can also be assembled to form larger components, systems, and even complete machines.

　　7. Maintainability: Since PCB products and various component assembly components are designed and produced in a standardized manner, 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.

　　What is IC?

　　An integrated circuit is a miniature electronic device or component. Using a certain process, the transistors, resistors, capacitors, inductors and other components and wiring required in a circuit are interconnected together, made on a small or several small semiconductor wafers or dielectric substrates, and then packaged in a tube shell, into a microstructure with the required circuit functions. All the components are structurally integrated into a whole, making electronic components a big step forward in miniaturization, low power consumption, intelligence and high reliability. It is represented by the letters “IC” in circuits.

　　Integrated circuits can be divided into three categories: analog integrated circuits, digital integrated circuits and digital/analog hybrid integrated circuits according to their functions and structures.

　　Integrated circuits have the advantages of small size, lightweight, few lead wires and soldering points, long life, high reliability, good performance, etc. At the same time, they are low in cost and convenient for mass production.

　　PCB vs IC – what are the differences?

　　There is a close relationship between integrated circuits and PCBs. The integrated circuit is a whole, welded on the PCB circuit board, and the PCB is the carrier of the integrated circuit. Integrated circuits are the integration of chips, while PCBs are the electrical connections and supports on the circuit board.

　　Understanding of the relationship between the two: the integrated circuit (IC) is welded on the PCB board; the PCB board is the carrier of the integrated circuit (IC). To put it simply, an integrated circuit is a general-purpose circuit integrated into a chip. It is a whole. Once it is damaged internally, the chip will also be damaged. While PCB can weld the components by itself. If the components are damaged, they can be replaced.

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2023-12-27 14:51 阅读量：1308
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Current streams from the anode to the cathode, however not the reverse way around.　　Why we should use PCB diodes?　　A PCB diode is a gadget that permits current to stream in one heading however not the other. This is accomplished through an underlying electric field. Albeit the earliest diodes comprised of scorching wires going through the center of a metal chamber which itself was situated within a glass vacuum tube, present day diodes are semiconductor diodes. As the name recommends, these are produced using semiconductor materials, principally doped silicon.　　The most normal application is by a wide margin the utilization of PCB diode for the correction of AC capacity to DC power. Utilizing diodes, various kinds of rectifier circuits can be made, the most fundamental of which are half wave, full wave community tapped, and full scaffold rectifiers. These are critical in hardware power supplies – for instance, a PC’s charger – where an air conditioner current, which comes from the mains power supply, should be changed over completely to a DC current which can then be put away.　　Delicate electronic gadgets should be safeguarded from floods in voltage, and the diode is ideal for this. When utilized as voltage insurance gadgets, PCB diode is nonconducting, notwithstanding, they promptly short any high-voltage spike by sending it to the ground where it can’t hurt delicate coordinated circuits. For this utilization, particular diodes known as “transient voltage silencers” are planned. These can deal with huge power spikes throughout brief time frame periods which would ordinarily harm touchy parts.　　Characteristics of diode　　Fundamental static attributes of PCB diode are the forward voltage VF and forward current IF, and the opposite voltage and current VR and IR.　　The region encompassed by the orange ran line in the chart on the right shows the usable area of amending diodes. In particular, this is the region inside the scope of admissible IF, and inside the breakdown voltage range in the opposite bearing. It ought to be noticed that the region encased by the green ran line is the usable area of Zener diodes, albeit these are not examined in this part. This region isn’t usable for different diodes, and assuming this region is placed unbounded on the IR, gadget disappointment might happen.　　Reverse Recovery Time is when, from the state wherein a voltage is applied in the forward heading and forward current In the event that is streaming, the voltage is shifted to the opposite course and the converse current IR gets back to the consistent state (basically zero).　　As shown in the graph on the right, when the gadget changes from the ON-state in which an In the event that is streaming to the OFF-state, in a perfect world IF would quickly go to nothing. Yet, in reality, zero is passed, and a converse current IR streams quickly, which recuperates to focus in time Reverse Recovery Time. The more limited Reverse Recovery Time is, the better is the gadget trademark.　　The capacitance Ct is the capacitance of the actual diode, and has a similar impact as a capacitor. As in the chart on the right, when a PCB diode is turned here and there, assuming Ct is huge, the supposed adjusting of the waveform turns out to be more articulated, and sometimes there might be the issue that the gadget starts switch off activity before an applied voltage arrives at a full level because of time constants. In a rapid exchanging circuit, diodes with a low Ct are attractive.
2023-12-21 16:23 阅读量：1228
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