The copper on the circuit board is mainly copper, copper solder joints are easy to be oxidized in the air, which will cause electrical conductivity, that is, poor tin eating or poor contact, reducing the performance of the circuit board, then you need to
when the customer requires the top bottom to write copper words, line copper word line width: HOZ base copper: character width of more than 8mil, height of more than 45mil; 1OZ base copper: more than 10mil character width; Height above 50mil. At the same
Design data output: PCB source files, Gerber files, assembly files, steel mesh files, structural files, etc. After the PCB Layout design is completed, our engineers will conduct mutual inspection, including DFM inspection, QA inspection, EMC inspection. A
An OSP circuit board, exposed to the air for more than ten days, will not be able to weld components. Energy production from 2 layers to 14 layers, 14-22 layers can be proofing production.Minimum line width/spacing: 3mil/3milBG Distance :0.20MM Minimum ap
This layer of organic film can make the circuit board before welding to ensure that the inner layer of copper foil will not be oxidized, welding, once heated, this layer of film will evaporate, solder can solder the copper wire and components togethe
As a very core part of the PCB industry, the domestic market in the large industry is subject to technical barriers, trade barriers and material shortboards and other factors, and there is a trend toward long-term loss of business downturn.
As long as the performance and quality of domestic PCB instruments and equipment are similar, with the advantages of the local environment such as cost performance and after-sales service, to establish a national brand, domestic instruments and equipment
the circuit board must be flame resistant, can not burn at a certain temperature, can only be softened. At this time, the temperature point is called the glass transition temperature (Tg point), and this value is related to the size and durability of the
in the board frame, to determine the positive and negative, it is best to place all devices on the same side, which is marked with three XXX, as shown in the figure below.
Single-sided circuit board is the most basic PCB circuit board, the parts are concentrated on one side, the wire is concentrated on the other side, because the wire appears on one side of the reason we call it single-sided circuit board. Because single-si
The second method is to let the designer of the circuit board factory beside a piece of copper foil around the circuit board pad, the attachment area is large, the pad is not easy to fall off, if there is no space around the pad beside the copper foil
"Highly integrated miniaturization and modularity are the technical requirements for the development of downstream electronic products, and also the general trend of printed circuit board (PCB) to fully support the development of the electronics indu...
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