PCB wiring is a very critical part of pcb design . Some friends do not know how much the pcb wiring line width is generally set. Let's introduce how much the pcb wiring line width is generally set. Generally, two issues need to be considered in the width of PCB wiring. One is the size of the current . If the current flowing is large, the traces cannot be too thin; the other is to consider the actual board making capacity of the board factory. If the current is small, the traces can be thinner, but if it is too thin, Some PCB board factories may not be able to produce them, or they may be produced but the yield rate has increased, so the problem of the board factory should be considered.
How much is the line width of pcb wiring generally set?
Generally, the line width and line spacing are controlled to 6/6mil, and the via hole is selected to be 12mil (0.3mm), which can be produced by most PCB manufacturers, and the production cost is low.
The minimum line width and line spacing are controlled to 4/4mil, and the via hole is 8mil (0.2mm). More than half of the PCB manufacturers can produce it, but the price will be a little more expensive than the previous one.
The minimum line width and line spacing are controlled to 3.5/3.5mil, and the via hole is 8mil (0.2mm), which can produce fewer PCB manufacturers, and the price will be a little more expensive.
The minimum line width and line spacing are controlled to 2/2mil, and the via hole is selected to be 4mil (0.1mm), which many pcb manufacturers cannot produce, and the price of this is the highest.
If the line width is set according to the density of the PCB design, the density is small, the line width and line spacing can be set larger, and the density is larger, and the line width and line spacing can be set smaller:
1) 8/8mil, 12mil (0.3mm) via hole.
2) 6/6mil, 12mil (0.3mm) via hole.
3) 4/4mil, select 8mil (0.2mm) for via hole.
4) 3.5/3.5mil, select 8mil (0.2mm) for via hole.
5) 3.5/3.5mil, the via hole is 4mil (0.1mm, laser drilling).
6) 2/2mil, 4mil via hole (0.1mm, laser drilling).