PCB Libraries, Inc. | https://www.pcblibraries.com/Forum/qfn-thermal-via-pitch_topic2914_post11613.html
0.50 minimum space, you might not get 60% coverage. Also, most component manufacturers recommend a rectangular shape thermal pad, even though the thermal tab terminal has a 45 degree chamfer
PCB Libraries, Inc. | https://www.pcblibraries.com/Forum/topic2914&OB=ASC.html
. Some app notes I have read recommend a pitch of 1.0 to 1.5 mm Is there an IPC spec for this? I assume there is a way to set the size and number of solder paste squares in Footprint Expert
PCB Libraries, Inc. | https://www.pcblibraries.com/forum/qfn-thermal-via-pitch_topic2914.html
. Some app notes I have read recommend a pitch of 1.0 to 1.5 mm Is there an IPC spec for this? I assume there is a way to set the size and number of solder paste squares in Footprint Expert
PCB Libraries, Inc. | https://www.pcblibraries.com/forum/topic2914&OB=DESC.html
0.50 minimum space, you might not get 60% coverage. Also, most component manufacturers recommend a rectangular shape thermal pad, even though the thermal tab terminal has a 45 degree chamfer
PCB Libraries, Inc. | https://www.pcblibraries.com/forum/topic2914&OB=ASC.html
. Some app notes I have read recommend a pitch of 1.0 to 1.5 mm Is there an IPC spec for this? I assume there is a way to set the size and number of solder paste squares in Footprint Expert
PCB Libraries, Inc. | https://www.pcblibraries.com/forum/thermal-tab-vias_topic1151_post4582.html
: 05 Jan 2012 Location: San Diego, CA Status: Offline Points: 4866 Post Options Post Reply Quote Tom H Report Post Thanks(0) Quote Reply Posted: 25 Oct 2013 at 6:14am I would not recommend that you put vias in Thermal Pads in the footprint
PCB Libraries, Inc. | https://www.pcblibraries.com/Forum/thermal-tab-vias_topic1151.html
: 02 Jun 2012 Location: Lancashire UK Status: Offline Points: 152 Post Options Post Reply Quote Mattylad Report Post Thanks(0) Quote Reply Topic: Thermal Tab Vias Posted: 06 Nov 2013 at 3:17pm Tom H wrote: I would not recommend that you put vias in Thermal Pads in the footprint
PCB Libraries, Inc. | https://www.pcblibraries.com/Forum/thermal-tab-vias_topic1151_post4520.html
: 05 Jan 2012 Location: San Diego, CA Status: Offline Points: 5252 Post Options Post Reply Quote Tom H Report Post Thanks(0) Quote Reply Posted: 25 Oct 2013 at 6:14am I would not recommend that you put vias in Thermal Pads in the footprint
PCB Libraries, Inc. | https://www.pcblibraries.com/forum/thermal-tab-vias_topic1151.html
: 02 Jun 2012 Location: Lancashire UK Status: Offline Points: 152 Post Options Post Reply Quote Mattylad Report Post Thanks(0) Quote Reply Topic: Thermal Tab Vias Posted: 06 Nov 2013 at 3:17pm Tom H wrote: I would not recommend that you put vias in Thermal Pads in the footprint
PCB Libraries, Inc. | https://www.pcblibraries.com/forum/thermal-tab-vias_topic1151_post4520.html
: 05 Jan 2012 Location: San Diego, CA Status: Offline Points: 5252 Post Options Post Reply Quote Tom H Report Post Thanks(0) Quote Reply Posted: 25 Oct 2013 at 6:14am I would not recommend that you put vias in Thermal Pads in the footprint
