Special attention needs to be paid to the selection of materials to ensure stability in terms of temperature, humidity and bias in addition to electrical properties. This will lead to future restrictions on material selection and design rules.
Testing PCB board should pay attention to insulation performance, working principle, test instrument internal resistance, power integrated circuit heat dissipation, welding quality, do not easily determine the damage of integrated circuit and other proble
With the continuous upgrading of electronic products, single and double panels have been unable to meet the needs of most electronic products, multilayer board has been greatly developed, the demand is greatly increased, multi-layer pcb circuit board rapi
With the continuous development of The Times, the current type of electronic products is more and more, so pcb circuit board design engineers in the early design, in order to determine the feasibility of the program, will keep on the circuit board proofin
Solder resistance coating is a kind of protective material suitable for the exterior surface of circuit board. The solder resistance coating will cover the entire surface of the board, including metal and dielectric materials, except for the pads and hole
It is the national comprehensive reform pilot zone, the national logistics hub, the Southeast international shipping center, the pilot free Trade Zone, and the national Marine economy development demonstration zone. It has become the cross-Straits emergin
PCB technology is very complex, involving many aspects of the problem, whether in the design stage or the production stage, there are a lot of problems need to be answered.
through holes are only used to connect the wires on both sides of the circuit board, the number of holes is much less, and the diameter of holes is much smaller. This design can greatly improve the installation density of PCB components.
In order to improve the technical performance of the printed circuit board, we must first improve the performance of the printed circuit substrate board, and ensure the demand for high density and fine wire, copper foil, laminated insulating dielectric sh
PCB copper-clad plate is the basic material of electronics industry, mainly used for processing and manufacturing printed circuit board (PCB), and pcb production process and material affect its price
Impedance refers to the resistance and reactance parameters, because PCB circuit board bottom plug into consideration of electrical conductivity and signal transmission performance, so it is necessary to impedance as low as possible, resistivity should be
On SMT circuit board, solder joints and components are on the same plane of the circuit board, so in SMT processing PCB, through holes are only used to connect the wires on both sides of the circuit board, the number of holes is much less, and the diamete
Telegram