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2022-01-06
PCB board layout: The pulse voltage connection should be as short as possible, in which the input switch tube connects to the transformer, and the output transformer connects to the rectifier tube.
2022-01-05
As the carrier of various components and the hub of circuit signal transmission, PCB board has become an important and key part of electronic information products.
As a power supply engineer, an electromagnetic compatibility engineer, or a PCB board layout engineer, you must understand the cause of the electromagnetic compatibility problem and take measures.
2022-01-04
The development of the electronic industry also promotes the development of printed circuit boards, and also puts forward higher requirements on the production process and surface mount technology of the printed circuit board.
The design of the PCB board for the functional circuit of the radio frequency switch module,with the development of modern wireless communication systems, mobile communication, radar.
2022-01-01
Automotive PCB electronic market is the third largest application category of PCB circuit board after computer and communication.
2021-12-31
Calculate the appropriate heat dissipation copper area of the PCB board surface according to the power consumption of the device.
Printed circuit boards are an important part of electronic equipment. With the popularization of electronic technology and the development of integrated circuit technology.
2021-12-30
1. Problem: The etching rate in the PCB board is reduced.Reason: due to improper control of process parameters.
The process of PCB board from light board to showing circuit pattern is a relatively complicated process of physical and chemical reaction.
Some customers have designed profiles in Keep layer, Board layer, Top over layer, etc. and these profiles are not coincident, which makes it difficult for FPC Flexible Circuit Board manufacturers to determine which profile line to use.
2021-12-29
Laminating is an important process in the manufacture of PCB multilayers. The control of lamination quality is becoming more and more important in the manufacture of PCB multilayers.
1. Pinhole of PCB circuit board. The pinhole is due to hydrogen adsorbed on the surface of the plated part and delayed-release. The plating solution cannot moisten the surface of the plated part.
With the rapid development of PCB board manufacturing technology, users are not only interested in the internal quality of PCB board, but customers also put forward higher requirements for the appearance of PCB board.
In complex multi-layer PCB board detection, two common methods are needle-bed test and double-probe or flying-needle test.
The size and number of layers of the printed circuit boards need to be determined at the initial stage of the design.
Printed circuit boardssurface treatment,Anti-oxidation, tin spray, lead-free tin spray, immersion gold, immersion tin, immersion silver, hard gold plating, full board gold plating, gold finger, nickel palladium gold OSP.
2021-12-28
Abrasives are the materials used to grind and brush the copper surface before cleaning the PCB surface, such as polymer nonwoven or nonwoven cloth with diamond sand.
The coating of PCB boards varies according to the use of the boards. Here is a brief description of the properties and uses of copper and nickel coatings from the circuit board manufacturer IPCB.
A1 level multi-layer PCB material quality of this series of products has completely reached the world-class level, which is the highest grade and best performance product of FR-4 PCB.
