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Flex Circuit Footprint Printed From: PCB Libraries Forum Category: Libraries Forum Name: Allegro Forum Description: URL: https://www.PCBLibraries.com/forum/forum_posts.asp?TID=1082 Printed Date: 24 Nov 2024 at 11:46pm Topic: Flex Circuit Footprint Posted By: chads108 Subject: Flex Circuit Footprint Date Posted: 20 Aug 2013 at 8:08am I have a LCD that is to be connected to the PCB via a flex circuit soldered directly to the board.  The exposed pads on the flex circuit are 1.6mm x 0.6mm on 1mm pitch.  Is there some rule of thumb to use in determining the pad size to be used on the board to attach the flex circuit? Replies: Posted By: Tom H Date Posted: 20 Aug 2013 at 8:33am I would recommend using the Most environment for the pad size and the Nominal environment for the solder mask size. This is a "Solder Mask" defined pad so that the solder mask helps to hold the pad to the flex board. The solder mask only has to encroach on the Toe & Heel and not on the sides. If you normally use the Least environment then make the pad size Nominal and the solder mask Least. ------------- Stay connected - follow us! https://twitter.com/PCBLibraries" rel="nofollow - X - http://www.linkedin.com/company/pcb-libraries-inc-/" rel="nofollow - LinkedIn

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