Complete process of PCB design in PCB industry

1、 1. PCB schematic element design

If there are required components in the PROTEL catalog, you can directly find them in the schematic diagram. If there are no required components, you need to

Create a new principle component library (Sch. lib). Process: find the same (or different) number of pins with the required component in the original component library

For a few), PCB components first place component 1 in the schematic editing area (i.e. Schdoc file), click the component, and execute the menu command

Edit | Copy, the cursor becomes a crosshairs, move the cursor to the component, click the mouse to determine a datum point, and then switch to the

Sch. to be edited Lib file, create a new device (shortcut key create component) in the file and modify the name

Click SCH Lib in the lower right corner of the environment, move the mouse cursor to the empty component name, right-click, and execute in the pop-up shortcut menu

Paste command, paste the component 1 into the new one, and then modify the pin attributes

Then execute the menu command Report | Component Rule Check to perform the gauge check

PCB design

2. PCB schematic design

Create a new schematic file -->load a catalog (including a catalog created by yourself) -->place components -->schematic wiring

Output device report<-- Correct errors -- compile all projects<- Set compile error report options first

(Reports/Bills of Materials)

Output network report (if there is no hierarchical schematic diagram, you can only generate a single document's network report Design/Netlist For Document/Project. If there is a hierarchical module diagram, you need to generate a project's network report Design/Netlist For Project/Project)

In schematic design, if the circuit diagram is relatively complex, hierarchical schematic design from top to bottom (or from bottom to top) can be adopted

3. PCB components

You can use an identical (or similar) encapsulated component to simply modify its attributes to obtain the required component encapsulation. The specific operation process is the process of copying and modifying the component encapsulation from. pcbdoc to. PCBlib. It will not be repeated here No registration required

After component package modification, execute Edit/Set Preference/pin 1 to Set the package reference point at the first pin Then run Report/Component Rule check to set all the rules to be checked, and OK. So far, the encapsulation is complete

4. pcb design

First, create a new PCB file and import it into the network table when the package lib has been loaded

Automatic component layout Before this step, you need to set the size of the PCB, and you need to plan its size and shape. Click the bottom to select the keep out layer, and then in the place menu, select Draw Line, and then draw a rectangle on the black base plate. You can choose the size yourself.

Note: The drawing line at this time is pink! This indicates that you are planning the board size in the keep out layer.

Then the PCB layout is automatic, and the routing can be carried out smoothly.