PCB Libraries, Inc. | https://www.pcblibraries.com/forum/proportional-throughhole-padstacks_topic90_post1476.html
0.4mm has a pad size of 1.00mm whilst in the VIA chart, a 0.4mm hole has a pad size of between 0.65mm and 0.8mm. I realise there is no solder fillet required on a via but have been tearing what little there is left of my hair out trying to figure out how the VIA pad is calculated and if it is defined anywhere in IPC
PCB Libraries, Inc. | https://www.pcblibraries.com/forum/proportional-throughhole-padstacks_topic90_post1535.html
. Then there's a point where the hole size is larger than 2 mm (80 mils) and the annular ring gradually gets even larger than the IPC-7251 standard
PCB Libraries, Inc. | https://www.pcblibraries.com/forum/proportional-throughhole-padstacks_topic90_post1937.html
. Then there's a point where the hole size is larger than 2 mm (80 mils) and the annular ring gradually gets even larger than the IPC-7251 standard
PCB Libraries, Inc. | https://www.pcblibraries.com/Forum/proportional-throughhole-padstacks_topic90_post1934.html
. Then there's a point where the hole size is larger than 2 mm (80 mils) and the annular ring gradually gets even larger than the IPC-7251 standard
PCB Libraries, Inc. | https://www.pcblibraries.com/Forum/proportional-throughhole-padstacks_topic90_post8089.html
. Then there's a point where the hole size is larger than 2 mm (80 mils) and the annular ring gradually gets even larger than the IPC-7251 standard
PCB Libraries, Inc. | https://www.pcblibraries.com/forum/proportional-throughhole-padstacks_topic90.html
. Then there's a point where the hole size is larger than 2 mm (80 mils) and the annular ring gradually gets even larger than the IPC-7251 standard
PCB Libraries, Inc. | https://www.pcblibraries.com/forum/topic90.html
. Then there's a point where the hole size is larger than 2 mm (80 mils) and the annular ring gradually gets even larger than the IPC-7251 standard
PCB Libraries, Inc. | https://www.pcblibraries.com/forum/topic90&OB=DESC.html
. Then there's a point where the hole size is larger than 2 mm (80 mils) and the annular ring gradually gets even larger than the IPC-7251 standard
PCB Libraries, Inc. | https://www.pcblibraries.com/forum/proportional-throughhole-padstacks_topic90_post1934.html
. Then there's a point where the hole size is larger than 2 mm (80 mils) and the annular ring gradually gets even larger than the IPC-7251 standard
PCB Libraries, Inc. | https://www.pcblibraries.com/forum/proportional-throughhole-padstacks_topic90_post1940.html
. Then there's a point where the hole size is larger than 2 mm (80 mils) and the annular ring gradually gets even larger than the IPC-7251 standard
