How to replace the backup package in the design process of PCB by Allegro

This article to share with you is about Allegro in the PCB design process how to replace the spare package, Xiaobian feel quite practical, so share with you to learn, I hope you can read this article after some gains, not much to say, follow Xiaobian to see it.

In the process of designing PCB with Allegro, have you encountered too large a capacitor package below BGA, or the wrong use of octagonal capacitor package outside BGA?

All this does not matter, in the absence of schematic cases we can modify the Device file (if not, you can create one) to modify the backup package, so that the drawing process at any time to replace.

(DEVICE FILE: sc0402) PACKAGE sc0402

CLASS DISCRETE

PINCOUNT 2 PINORDER sc0402 1 2

PINSWAP sc0402 1 2

ALT_SYMBOLS (T:C0402;B:SC0402)

FUNCTION sc0402 sc0402 1 2 END

As shown above, sc0402 is octagonal, we can modify ALT_SYMBOLS at will after saving the Device file and updating the netlist.

The above is how Allegro replaces the spare package in the PCB design process. Xiaobian believes that some knowledge points may be seen or used in our daily work. I hope you can learn more from this article. For more details, please follow the industry information channel.