PCB Libraries, Inc. | https://www.pcblibraries.com/Forum/son-qfn-calculations_topic889_post3258.html
(thermal) land dimensions for QFN/SON is fundamentally flawed. Why? Because it assumes maximum tolerance dimensions for the center land and then trims the inside of the peripheral lands to achieve the desired gap around the center pad
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: 20 Post Options Post Reply Quote jnelso09 Report Post Thanks(0) Quote Reply Topic: SON / QFN Calculations Posted: 15 Mar 2013 at 1:34pm Ooops! I just noticed that the previously posted pic shows exactly the opposite of what I'm talking about - The center land is minimized and the outer lands are maximized
PCB Libraries, Inc. | https://www.pcblibraries.com/forum/topic889&OB=ASC.html
(thermal) land dimensions for QFN/SON is fundamentally flawed. Why? Because it assumes maximum tolerance dimensions for the center land and then trims the inside of the peripheral lands to achieve the desired gap around the center pad
PCB Libraries, Inc. | https://www.pcblibraries.com/forum/RSS_how-to-make-hybrid-qfn-with-multiple-thermal-pads_topic1947.xml
PCB Libraries Forum : How To Make Hybrid QFN with Multiple Thermal Pads? PCB Libraries Forum : How To Make Hybrid QFN with Multiple Thermal Pads
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How To Make Hybrid QFN with Multiple Thermal Pads? - PCB Libraries Forum Forum Home > PCB Library Expert > Questions & Answers New Posts FAQ Search Events Register Login How To Make Hybrid QFN with Multiple Thermal Pads
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How To Make Hybrid QFN with Multiple Thermal Pads? - PCB Libraries Forum Forum Home > PCB Footprint Expert > Questions & Answers New Posts FAQ Search Events Register Login How To Make Hybrid QFN with Multiple Thermal Pads
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How To Make Hybrid QFN with Multiple Thermal Pads? - PCB Libraries Forum Forum Home > PCB Footprint Expert > Questions & Answers New Posts FAQ Search Events Register Login How To Make Hybrid QFN with Multiple Thermal Pads
PCB Libraries, Inc. | https://www.pcblibraries.com/forum/include-via-in-thermal-pad-footprint_topic2990.html
:13am Hi, In a QFN footprint with a thermal pad in the center. Is there a reason why we should not include the n vias in the thermal pad already in the footprint
PCB Libraries, Inc. | https://www.pcblibraries.com/forum/topic2990&OB=ASC.html
:13am Hi, In a QFN footprint with a thermal pad in the center. Is there a reason why we should not include the n vias in the thermal pad already in the footprint
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When Should A Pad Use Window-Pane Paste Mask? - PCB Libraries Forum Forum Home > Libraries > Footprints / Land Patterns New Posts FAQ Search Events Register Login When Should A Pad Use Window-Pane Paste Mask
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