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What are the common defects of PCB?

1106 0 Apr 18.2019, 17:08:02

Defects in PCB include solder bridges or different solder joints between component pins, short circuits between copper wires, open circuits, component shifts, and so on. In most cases, manufacturers do a lot of testing before bringing their products to market

Altium designer often prompts when performing updates from schematic to PCB: "failed to match * of * components using unique identifiers"？

1799 0 Apr 18.2019, 16:51:04

How to solution it?i just a new designer of this soft ware.

what is the pcb material S7439?

1316 0 Apr 18.2019, 14:54:55

- S7439-high speed material,is it different of FR-4?

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