The outermost wire or device of the PCB circuit board should be no less than 2mm away from the edge of the circuit board, which is conducive to the fixing of the PCB board and prevent the change of impedance value.
Because the soft and hard combined board is the combination of FPC and PCB, the production of soft and hard combined board should be equipped with both FPC production equipment and PCB production equipment.
ircuit board defect detection includes two parts: solder spot defect detection and component detection. The traditional detection adopts manual detection method, which is easy to miss detection, slow detection speed, long detection time and high cost, and
The setting and connection of input and output circuits are very important for the whole printed FPC circuit board, and whether it is reasonable or not will directly affect the size of electromagnetic interference.
The number of holes should be reduced as far as possible. It should be known that a hole in the circuit board will bring about 10pF capacitance effect, which is a great interference in high-frequency circuits.
Although baking is the best way to improve the burst board, baking not only wastes time, but also wastes equipment and manpower, and the Tg value will decrease after baking PCB is also a problem.
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The internal network table is the network table used for wiring inside the PCB system after modification according to the imported external network table. Strictly speaking, these two types of network tables are completely different concepts, but the read
In the past decade of research on PCB copying board and chip decryption, Hongyunlai reverse R&D engineers have accumulated rich experience in board copying and decryption, and have maintained long-term friendly cooperative relations with many domestic...
The different types of structures are characterized as follows: 1: flexible single-sided printed board, consisting of only one conducting layer; 2: flexible double-sided printed board, consisting of two conducting layers. 3: Flexible multilayer printed bo
PCB welding resistance blistering is a problem that many PCB factories inevitably appear in the processing of PCB, so what causes the welding resistance blistering? The following is for you to sort out the introduction.
PCBS with multiple layers are often used in high-speed, high-performance systems, where the multiple layers are used for direct current (DC) power supplies or ground reference planes.
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