We begin choose PCB manufacturer after a PCB be finished layout. What jobs do we need to do before we choose the factory?
1. Outputs gerber file and drilling file
Some engineer designed the PCB files and sent them to the PCB board factory directly. The PCB board factory has to transform
In printed circuit board manufacturing, printed circuit boards made with Multiwire board and Additive Process technology do not have to be etched. The printed circuit boards made by subtraction process need etching process to form conductive graphics. Under the protection of the graphic mask, the PCB etching removes the copper
Nowdays the assembly density of components on PCB is getting higher and higher follow the miniaturization, thinning and high speed of electronic products. And the transmission speed of the electric signal is getting faster and faster, it is difficult to meet the higher assembly requirements only increasing the wiring density
Heat dissipation
Conventional PCB substrates are generally hot undesirable conductors, The interlayer insulating material has a very slow heat emission. The internal heating of various electronic devices and power equipment can not be eliminated in time, result high speed components failure. But the metal core PCB has good heat dissipation. The
Flexible PCB is a kind of soft printed board material which appeared in 1970s. The base material is made of polyimide or polyester film. Flexible PCB is good reliable and excellent flexible,and its output is close to the output of rigid pcb.FPC widely used in portable communication equipment, computers, printers
When troubleshooting non-functional or poor performance circuits, engineers can run simulations or other analysis tools to consider the circuit from the schematic level. If these methods can not solve the problem, even the best engineers may be stumped and frustrated or confused. To avoid a similar dead end, I'll introduce
Prepreg, also known as pre impregnated material or bond sheet, it’s the main laminating material used in multilayer printed boards manufacturer. It is a type of thin sheet material made up of resins and reinforced. Reinforcement materials can be divided into glass cloth and other composite materials. Resins include epoxy
Printed circuit boards are a key element of various businesses, especially in the digital age when electronic technology is so important in many different areas. Different types of printed circuit boards also come in different types, depending on the needs of a particular company or industry, may have different materials,
When designing a PCB to factory fabrication, how to choose PCB material?
PCB material classification:
According to different materials (the most commonly used classification method)
Paper substrate (FR-1, FR-2, FR-3)
Epoxy glass cloth substrate (FR-4, FR-5)
Composite Substrates (CEM-1, CEM-3)
HDI sheet (RCC)
Special substrates (metal substrates, ceramic substrates, thermoplastic substrates, etc.)
Divided by resin
Phenolphthalein resin board
Epoxy board
Polyester
PCB vias are the electrical connections between layers. Vias are handled in the following ways:
PCB vias be covered:
Standard: Over-line holes must be covered, normal screen-printed solder resisted, no special plug-hole treatment;
Plug, part of the hole is not plugged, must accept the mouth of the yellow, but does not receive the
