hi..can someone help me to build SSOP36 footprint for eagle. i don't understand with component dimension from datasheet, such us MAX7301AAX, what is 0.80 BSC mean ? why do people make other people dizzy with document annotation? -- anonymous 2008
"0.80 mm BSC" means that the basic spacing between centers (BSC, also called the pin pitch) on that package is 0.80 mm.
What can you and I do to make things less confusing for the next person? I see that the current MAX7301 datasheet now links to SSOP 36 leads footprint pattern, neither of which use "BSC", so perhaps that's already less confusing? The MAX7301AAX is a MAX7301 in a "SSOP" 36 lead package with 0.80 mm pin pitch. The distance between the center of pin 1 and the center of pin 18 is nominally 13.60 mm.
Confusingly, I see that other manufacturers sell parts in what they call a 36-lead SSOP package with 0.65 mm pin pitch. On their SSOP36, the distance between the center of pin 1 and the center of pin 18 is nominally 11.05 mm. --DavidCary (talk) 08:56, 25 November 2014 (PST)
Please follow these simple guidelines for contributing footprints.
- Standardized packages each get their own page
- Create a section or sub-section for each variation of a footprint/package
- Footprints for common components (i.e. diodes) or non-standard packages each have their own section on the page for that component
- Create a table under each footprint section for footprints with multiple pin counts
Take a look at DIP if there are any questions.
Cleanup & Reorganization
It seems this page could be a lot more than just a list of links to lists of footprints. There are so many different versions of the same footprint, and I'm sure many just getting into electronics find this confusing.
I plan on the following reorganization:
- each footprint gets its own page, equivalent names redirect to that page
- each page has a list of different versions, with the ones that work the best at the top
- each version has its dimensions listed, with links to download it for Eagle, gEDA, KiCAD
- That sounds great.
- A typical footprint library file include dozens of footprints.
- So if we have one page per footprint, does that mean we link to the same library file on dozens of different pages?
- That seems unnecessarily redundant.
- But since no one else has proposed a better organization, let's go with "each footprint gets its own page" for now.
- --DavidCary (talk) 08:56, 25 November 2014 (PST)