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Allegro 网表导入与板框设置实战:从原理图到 PCB 的第一步

PCB设计
PCB设计
Pub 9/10
22

原理图画完只是开始,网表导进 PCB Editor 这一步,能把团队里一半的新人卡住。报错千奇百怪,其实九成是库没配齐、路径没指对。

网表导入我按这套流程走:

  • Capture 里先把器件属性核一遍,Footprint 字段空的先补上,否则导进去全是 No footprint,后面一个个改更难受。
  • 导出网表时把库路径指到公司的共享库,PCB Editor 端也在 Setup-User Preferences 里把 padpath、psmpath、flashpath 配好,两边路径不一致就是最常见的 No symbol 报错。
  • 导入后先跑一遍 Report,看有多少 Unplaced,数量对不上先别往下走,回头查封装映射,别带着错往下画。

板框这块也别省事。Design Outline 按结构图建好,原点和板厂资料保持一致,定位孔、拼板边距都在这一步留出来。Route Keepin 要跟着板框画,不然布线的时候线跑到板外都不知道。

网格原点这个细节我吃过亏:原点没对齐结构图,后面导 DXF、出装配图全是错位,返工一天。建议原点统一放板子左下角,X/Y 对齐结构基准孔,后面所有工序都省心。你们导入网表还遇到过什么诡异报错,评论区聊聊。

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Allegro 网表导入与板框设置实战:从原理图到 PCB 的第一步

讲 Allegro 网表导入常见报错、padpath/psmpath 库路径配置、Design Outline 与原点设置,帮新手把原理图到 PCB 的衔接走顺。

PCB设计PCB设计
Published 9/10
Allegro 网表导入与板框设置实战:从原理图到 PCB 的第一步
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Zhixingzhe IC Community
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