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THT: What is a squared annular “ring”? [duplicate]



Announcing the arrival of Valued Associate #679: Cesar Manara
Planned maintenance scheduled April 23, 2019 at 23:30 UTC (7:30pm US/Eastern)Square vs Round padKicad: How to add a Filled Zone around a Net with a single pin?Round female pin header vs square female pin header0.1 inch header in KiCADHow approach breadboard layout using KiCad?How do I determine the courtyard for a component footprint?Concern about bypassing capacitors on other side of the board (Current Flow)Recommended pad size for desoldering?D1 mini - pin hole / track repair“Conflict power between pins” with a voltage regulatorCan you put a through-hole part behind an SMT part?



.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty margin-bottom:0;








6












$begingroup$



This question already has an answer here:



  • Square vs Round pad

    4 answers



At least in KiCad, the footprints of through-hole pin headers have one squared annular “ring”, the other ones are round:



enter image description here



What does the square indicate?



(Also I’m wondering if there is perhaps a convention of connecting GND to it.)










share|improve this question









$endgroup$



marked as duplicate by Marcus Müller, pipe, Finbarr, Bimpelrekkie, RoyC Mar 25 at 17:29


This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.













  • 6




    $begingroup$
    have you also noticed that the square usually has a 1 label?
    $endgroup$
    – jsotola
    Mar 24 at 16:47






  • 5




    $begingroup$
    I'd say clear duplicate.
    $endgroup$
    – Marcus Müller
    Mar 24 at 20:37






  • 1




    $begingroup$
    At least for KiCad the answer is very simple. It is specified that way in the library convention: kicad-pcb.org/libraries/klc/F7.3 (Answer in comments as i can not create an answer to a duplicate question.) We are however slowly transitioning to using rounded rectangle pads instead of square ones. (Benefits: Better solder joint, more space for traces.)
    $endgroup$
    – Rene Pöschl
    Mar 25 at 17:35


















6












$begingroup$



This question already has an answer here:



  • Square vs Round pad

    4 answers



At least in KiCad, the footprints of through-hole pin headers have one squared annular “ring”, the other ones are round:



enter image description here



What does the square indicate?



(Also I’m wondering if there is perhaps a convention of connecting GND to it.)










share|improve this question









$endgroup$



marked as duplicate by Marcus Müller, pipe, Finbarr, Bimpelrekkie, RoyC Mar 25 at 17:29


This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.













  • 6




    $begingroup$
    have you also noticed that the square usually has a 1 label?
    $endgroup$
    – jsotola
    Mar 24 at 16:47






  • 5




    $begingroup$
    I'd say clear duplicate.
    $endgroup$
    – Marcus Müller
    Mar 24 at 20:37






  • 1




    $begingroup$
    At least for KiCad the answer is very simple. It is specified that way in the library convention: kicad-pcb.org/libraries/klc/F7.3 (Answer in comments as i can not create an answer to a duplicate question.) We are however slowly transitioning to using rounded rectangle pads instead of square ones. (Benefits: Better solder joint, more space for traces.)
    $endgroup$
    – Rene Pöschl
    Mar 25 at 17:35














6












6








6


1



$begingroup$



This question already has an answer here:



  • Square vs Round pad

    4 answers



At least in KiCad, the footprints of through-hole pin headers have one squared annular “ring”, the other ones are round:



enter image description here



What does the square indicate?



(Also I’m wondering if there is perhaps a convention of connecting GND to it.)










share|improve this question









$endgroup$





This question already has an answer here:



  • Square vs Round pad

    4 answers



At least in KiCad, the footprints of through-hole pin headers have one squared annular “ring”, the other ones are round:



enter image description here



What does the square indicate?



(Also I’m wondering if there is perhaps a convention of connecting GND to it.)





This question already has an answer here:



  • Square vs Round pad

    4 answers







kicad footprint through-hole






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked Mar 24 at 16:43









fekleefeklee

7161024




7161024




marked as duplicate by Marcus Müller, pipe, Finbarr, Bimpelrekkie, RoyC Mar 25 at 17:29


This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.









marked as duplicate by Marcus Müller, pipe, Finbarr, Bimpelrekkie, RoyC Mar 25 at 17:29


This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.









  • 6




    $begingroup$
    have you also noticed that the square usually has a 1 label?
    $endgroup$
    – jsotola
    Mar 24 at 16:47






  • 5




    $begingroup$
    I'd say clear duplicate.
    $endgroup$
    – Marcus Müller
    Mar 24 at 20:37






  • 1




    $begingroup$
    At least for KiCad the answer is very simple. It is specified that way in the library convention: kicad-pcb.org/libraries/klc/F7.3 (Answer in comments as i can not create an answer to a duplicate question.) We are however slowly transitioning to using rounded rectangle pads instead of square ones. (Benefits: Better solder joint, more space for traces.)
    $endgroup$
    – Rene Pöschl
    Mar 25 at 17:35













  • 6




    $begingroup$
    have you also noticed that the square usually has a 1 label?
    $endgroup$
    – jsotola
    Mar 24 at 16:47






  • 5




    $begingroup$
    I'd say clear duplicate.
    $endgroup$
    – Marcus Müller
    Mar 24 at 20:37






  • 1




    $begingroup$
    At least for KiCad the answer is very simple. It is specified that way in the library convention: kicad-pcb.org/libraries/klc/F7.3 (Answer in comments as i can not create an answer to a duplicate question.) We are however slowly transitioning to using rounded rectangle pads instead of square ones. (Benefits: Better solder joint, more space for traces.)
    $endgroup$
    – Rene Pöschl
    Mar 25 at 17:35








6




6




$begingroup$
have you also noticed that the square usually has a 1 label?
$endgroup$
– jsotola
Mar 24 at 16:47




$begingroup$
have you also noticed that the square usually has a 1 label?
$endgroup$
– jsotola
Mar 24 at 16:47




5




5




$begingroup$
I'd say clear duplicate.
$endgroup$
– Marcus Müller
Mar 24 at 20:37




$begingroup$
I'd say clear duplicate.
$endgroup$
– Marcus Müller
Mar 24 at 20:37




1




1




$begingroup$
At least for KiCad the answer is very simple. It is specified that way in the library convention: kicad-pcb.org/libraries/klc/F7.3 (Answer in comments as i can not create an answer to a duplicate question.) We are however slowly transitioning to using rounded rectangle pads instead of square ones. (Benefits: Better solder joint, more space for traces.)
$endgroup$
– Rene Pöschl
Mar 25 at 17:35





$begingroup$
At least for KiCad the answer is very simple. It is specified that way in the library convention: kicad-pcb.org/libraries/klc/F7.3 (Answer in comments as i can not create an answer to a duplicate question.) We are however slowly transitioning to using rounded rectangle pads instead of square ones. (Benefits: Better solder joint, more space for traces.)
$endgroup$
– Rene Pöschl
Mar 25 at 17:35











1 Answer
1






active

oldest

votes


















18












$begingroup$

It’s just a quick and easy way to distinguish which connector pad is pin 1.



Particularly when there is no silkscreen present or just when routing the PCB.






share|improve this answer









$endgroup$








  • 8




    $begingroup$
    And there is not a convention of connecting ground to it! Don't even think that thought!
    $endgroup$
    – TimWescott
    Mar 24 at 19:27






  • 11




    $begingroup$
    Of course there's a convention of connecting ground to it. It's just that there are also 17 other conventions.
    $endgroup$
    – Russell Borogove
    Mar 24 at 22:33

















1 Answer
1






active

oldest

votes








1 Answer
1






active

oldest

votes









active

oldest

votes






active

oldest

votes









18












$begingroup$

It’s just a quick and easy way to distinguish which connector pad is pin 1.



Particularly when there is no silkscreen present or just when routing the PCB.






share|improve this answer









$endgroup$








  • 8




    $begingroup$
    And there is not a convention of connecting ground to it! Don't even think that thought!
    $endgroup$
    – TimWescott
    Mar 24 at 19:27






  • 11




    $begingroup$
    Of course there's a convention of connecting ground to it. It's just that there are also 17 other conventions.
    $endgroup$
    – Russell Borogove
    Mar 24 at 22:33















18












$begingroup$

It’s just a quick and easy way to distinguish which connector pad is pin 1.



Particularly when there is no silkscreen present or just when routing the PCB.






share|improve this answer









$endgroup$








  • 8




    $begingroup$
    And there is not a convention of connecting ground to it! Don't even think that thought!
    $endgroup$
    – TimWescott
    Mar 24 at 19:27






  • 11




    $begingroup$
    Of course there's a convention of connecting ground to it. It's just that there are also 17 other conventions.
    $endgroup$
    – Russell Borogove
    Mar 24 at 22:33













18












18








18





$begingroup$

It’s just a quick and easy way to distinguish which connector pad is pin 1.



Particularly when there is no silkscreen present or just when routing the PCB.






share|improve this answer









$endgroup$



It’s just a quick and easy way to distinguish which connector pad is pin 1.



Particularly when there is no silkscreen present or just when routing the PCB.







share|improve this answer












share|improve this answer



share|improve this answer










answered Mar 24 at 16:47









Edgar BrownEdgar Brown

7,0572839




7,0572839







  • 8




    $begingroup$
    And there is not a convention of connecting ground to it! Don't even think that thought!
    $endgroup$
    – TimWescott
    Mar 24 at 19:27






  • 11




    $begingroup$
    Of course there's a convention of connecting ground to it. It's just that there are also 17 other conventions.
    $endgroup$
    – Russell Borogove
    Mar 24 at 22:33












  • 8




    $begingroup$
    And there is not a convention of connecting ground to it! Don't even think that thought!
    $endgroup$
    – TimWescott
    Mar 24 at 19:27






  • 11




    $begingroup$
    Of course there's a convention of connecting ground to it. It's just that there are also 17 other conventions.
    $endgroup$
    – Russell Borogove
    Mar 24 at 22:33







8




8




$begingroup$
And there is not a convention of connecting ground to it! Don't even think that thought!
$endgroup$
– TimWescott
Mar 24 at 19:27




$begingroup$
And there is not a convention of connecting ground to it! Don't even think that thought!
$endgroup$
– TimWescott
Mar 24 at 19:27




11




11




$begingroup$
Of course there's a convention of connecting ground to it. It's just that there are also 17 other conventions.
$endgroup$
– Russell Borogove
Mar 24 at 22:33




$begingroup$
Of course there's a convention of connecting ground to it. It's just that there are also 17 other conventions.
$endgroup$
– Russell Borogove
Mar 24 at 22:33



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