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| Recommended DO-214AC | 
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| wheels1234   Active User     Joined: 11 Jun 2012 Location: U.S.A. Status: Offline Points: 41 |  Post Options  Thanks(0)  Quote  Reply  Topic: Recommended DO-214AC Posted: 07 May 2015 at 5:03am | 
| Question on a Fairchild recommended Land Pattern.  Does anyone understand why this Fairchild is so different from what is typically recommend?  What would you follow? https://www.fairchildsemi.com/datasheets/ES/ES1J.pdf Thanks, John W | |
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| Tom H   Admin Group     Joined: 05 Jan 2012 Location: San Diego, CA Status: Offline Points: 5949 |  Post Options  Thanks(0)  Quote  Reply  Posted: 07 May 2015 at 9:03am | 
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Fairchild need to update their Package data to whole metric numbers. They just took the old Inch based part and converted the numbers.  The Heel Joint recommendation is only 0.30 mm and IPC-7351 recommends 0.50 mm. However, the datasheet does say "Minimum Recommendation" so that leaves it up to the user to figure out what the Nominal or Maximum should be.   | |
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