IEC 61188-7 Zero Component Orientations
Printed From: PCB Libraries Forum
Category: Libraries
Forum Name: PCB Library Construction Guidelines
Forum Description:
URL: https://www.PCBLibraries.com/forum/forum_posts.asp?TID=3374
Printed Date: 21 Nov 2024 at 11:08pm
Topic: IEC 61188-7 Zero Component Orientations
Posted By: Tom H
Subject: IEC 61188-7 Zero Component Orientations
Date Posted: 07 Apr 2024 at 3:19pm
IEC 61188-7 International Standard for Zero Component Orientation.  The zero orientation with pin 1 in the upper left corner was published in the IPC-7351A in 2007 and is referred to as “Level A”.  The zero orientation with pin 1 in the lower left corner was published in IEC 61188-7 in 2009 and is referred to as “Level B”.  Note: Level B is recommended as standard for new ECAD libraries for 3 reasons. 1. For 18 years the original IPC-SM-782 used Level B. 2. The footprint should be long in the horizontal due to computer screen shapes and ANSI and IEC paper sizes. 3. PCB layouts are long in the horizontal to fit properly on the standard paper sizes. ------------- Stay connected - follow us! https://twitter.com/PCBLibraries" rel="nofollow - X - http://www.linkedin.com/company/pcb-libraries-inc-/" rel="nofollow - LinkedIn |