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Change Pin Number to Names for Polarized Capacitor

Printed From: PCB Libraries Forum
Category: PCB Footprint Expert
Forum Name: Product Suggestions
Forum Description: request new features
URL: https://www.PCBLibraries.com/forum/forum_posts.asp?TID=3551
Printed Date: 10 Oct 2025 at 5:46am


Topic: Change Pin Number to Names for Polarized Capacitor
Posted By: m.elsayed
Subject: Change Pin Number to Names for Polarized Capacitor
Date Posted: 29 Sep 2025 at 1:19pm
Can’t change pin names in polarized capacitor. 


Replies:
Posted By: Tom H
Date Posted: 29 Sep 2025 at 1:41pm
What pin names do you want? 

Give us an example.



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Posted By: m.elsayed
Date Posted: 29 Sep 2025 at 7:54pm
P & N

Posted By: Tom H
Date Posted: 29 Sep 2025 at 8:08pm
In my 51 years in the PCB design industry, I've never seen a EE engineer name capacitor pins P & N in the schematic. 

But it could be a new thing that I haven't heard of yet. 

In the IPC world, all positive pins are 1 and negative pins are 2. 

Pin 1 always on the left. 

Diodes are different because there have been too many errors made using pin names 1 & 2. However, many EE engineers use Pins 1 & 2 for diodes. The main problem with diodes is LEDs. The polarity marking on a diode is on the cathode. The polarity marking on many LEDs is on the Anode. Thus comes the confusion. 

Renamed pins are saved to the FPX file and there is no provision for saving alpha pin names for capacitors (yet). 



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Posted By: m.elsayed
Date Posted: 09 Oct 2025 at 3:51am
giving user ability to change numbers 1, 2 to P&N it be more helpful
this option let user use it or not

Posted By: Tom H
Date Posted: 09 Oct 2025 at 8:31am
Are you saying that EE engineers are putting P & N in capacitor symbols in the schematic? 

We don't know any CAD vendor schematic capture tool that provides default polarized capacitor library symbols with P & N pin names. 

I've been in the PCB design industry for over 50 years and I've never seen a component manufacturer datasheet for polarized capacitors that used pin names P & N. 

Is this something that is unique to your company?

Regardless, we're looking into allowing the user to rename polarized capacitor pin names in the property dialog box. 



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