PCB Libraries, Inc. | https://www.pcblibraries.com/forum/RSS_shifting-ahead-two-decimal-points-in-ipc-naming_topic2030.xml
: There is a rule in IPC 7351-B,... Author: manuj77Subject: 2030Posted: 09 Dec 2016 at 3:11amThere is a rule in IPC 7351-B, footprint naming convention where we need to shift 2 decimal places right for Body width/Lead Span/Pitch and similarly one place for chip packages.(Example
PCB Libraries, Inc. | https://www.pcblibraries.com/Forum/decimal-precision-in-physical-description_topic298_post482.html
Posted: 21 Oct 2012 at 2:46pm If the package is originally a Inch Based part, the millimeter values are sometimes carried out 3 places to the right of the decimal point
PCB Libraries, Inc. | https://www.pcblibraries.com/forum/topic298&OB=ASC.html
:21pm I have noticed in the physical description field most dimensions are two places past the decimal, ie 3.20 x 1.60 x1.40, but there are several that are carried out to three places
PCB Libraries, Inc. | https://www.pcblibraries.com/forum/no-option-for-pad-roundoff-in-v2021-edition_topic2866&OB=DESC_page2.html
-> Manufacturer's Dimensions. I got the impression that no matter what decimal accuracy I put in I got three decimal places on the dimensions but now I can't reproduce the behaviour so it was probably user induced
PCB Libraries, Inc. | https://www.pcblibraries.com/forum/topic2030&OB=ASC.html
:11am There is a rule in IPC 7351-B, footprint naming convention where we need to shift 2 decimal places right for Body width/Lead Span/Pitch and similarly one place for chip packages. (Example
PCB Libraries, Inc. | https://www.pcblibraries.com/Forum/no-option-for-pad-roundoff-in-v2021-edition_topic2866.html
: Options (global user preferences) just File Save to your personal .opt file and edit any value Library Editor to save your data Batch Build FP Designer for custom non-standard packages like connectors Options have min/max decimal place accuracy up to 6 places
PCB Libraries, Inc. | https://www.pcblibraries.com/Forum/no-option-for-pad-roundoff-in-v2021-edition_topic2866_post11421.html
" (strange name if this is the calculated dimensions by Footprint Expert) are presented with 3 decimal places. +- 0.005 mm in pad size can't have any practical meaning when it comes to soldering etc so I would like it to stick with 2 decimal places
PCB Libraries, Inc. | https://www.pcblibraries.com/Forum/no-option-for-pad-roundoff-in-v2021-edition_topic2866_post11436.html
: Options (global user preferences) just File Save to your personal .opt file and edit any value Library Editor to save your data Batch Build FP Designer for custom non-standard packages like connectors Options have min/max decimal place accuracy up to 6 places
PCB Libraries, Inc. | https://www.pcblibraries.com/Forum/no-option-for-pad-roundoff-in-v2021-edition_topic2866_post11422.html
" (strange name if this is the calculated dimensions by Footprint Expert) are presented with 3 decimal places. +- 0.005 mm in pad size can't have any practical meaning when it comes to soldering etc so I would like it to stick with 2 decimal places
PCB Libraries, Inc. | https://www.pcblibraries.com/Forum/no-option-for-pad-roundoff-in-v2021-edition_topic2866_post11441.html
" (strange name if this is the calculated dimensions by Footprint Expert) are presented with 3 decimal places. +- 0.005 mm in pad size can't have any practical meaning when it comes to soldering etc so I would like it to stick with 2 decimal places
