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Mapping Silkscreen Outline to Body

Printed From: PCB Libraries Forum
Category: PCB Footprint Expert
Forum Name: Questions & Answers
Forum Description: issues and technical support
URL: https://www.PCBLibraries.com/forum/forum_posts.asp?TID=1645
Printed Date: 18 Nov 2024 at 4:47pm


Topic: Mapping Silkscreen Outline to Body
Posted By: JJonas
Subject: Mapping Silkscreen Outline to Body
Date Posted: 11 Apr 2015 at 10:43pm
You are offering to choose whether to use Max, Min or Nominal body size when mapping silkscreen outline. However, this feature does not work for THD components. For example, you are not asking to enter min and max values of length and width for DIP packages, Headers, PGA packages and TO-220.

Let's compare PGA and BGA packages. For BGA package you ask to enter min and max values for D (length) and E (width), while for PGA you only ask for max values. Hence for PGA packages you can map silkscreen outline to maximum body size, but you are not able to map to minimum or nominal size. This leads to library inconsistency. Can you please explain why it is done the way it is done?


Replies:
Posted By: Tom H
Date Posted: 13 Apr 2015 at 12:09pm
We'll be going over every component family in the next 3 weeks to insure that they all follow the same rules and guidelines. This will be released in V2015.11 the 1st week of May.
 


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