PCB Libraries, Inc. | https://www.pcblibraries.com/forum/hole-size-for-through-hole-compoent_topic3025_post12056.html
. I found this IPC information: Minimum Hole Size = Maximum Lead Diameter + 0.20mm (for Level B of IPC-2222) Being the manufacturer of the power module does not specify
PCB Libraries, Inc. | https://www.pcblibraries.com/forum/RSS_ipc7251_topic1798.xml
;IPC-7351C calculation formula will be: Pad diameter = Hole size + 2*Min. annular ring(Min 0.2mm), or = Hole size * pad-to-hole-ratio, whichever is larger. But calculated result will be
PCB Libraries, Inc. | https://www.pcblibraries.com/forum/ipc7251_topic1798.html
. I have other questions below: The calculation formula below for pad diameter is different with IPC-2221B 9.1.1, how to set "pad to hole ratio" and "minimum annular ring"? http
PCB Libraries, Inc. | https://www.pcblibraries.com/forum/topic1798&OB=DESC.html
. I have other questions below: The calculation formula below for pad diameter is different with IPC-2221B 9.1.1, how to set "pad to hole ratio" and "minimum annular ring"? http
PCB Libraries, Inc. | https://www.pcblibraries.com/forum/ipc7251_topic1798_post7361.html
: The calculation formula below for pad diameter is different with IPC-2221B 9.1.1, how to set "pad to hole ratio" and "minimum annular ring"? http
PCB Libraries, Inc. | https://www.pcblibraries.com/forum/RSS_proportional-throughhole-padstacks_topic90.xml
; So Proportional Padstacks meet or beat IPC-7251. The theory is simple. If a through-hole component lead has a large diameter it's for a reason
PCB Libraries, Inc. | https://www.pcblibraries.com/forum/proportional-throughhole-padstacks_topic90_post1934.html
. So Proportional Padstacks meet or beat IPC-7251. The theory is simple. If a through-hole component lead has a large diameter it's for a reason
PCB Libraries, Inc. | https://www.pcblibraries.com/forum/proportional-throughhole-padstacks_topic90_post1940.html
. So Proportional Padstacks meet or beat IPC-7251. The theory is simple. If a through-hole component lead has a large diameter it's for a reason
PCB Libraries, Inc. | https://www.pcblibraries.com/Forum/proportional-throughhole-padstacks_topic90_post1534.html
. So Proportional Padstacks meet or beat IPC-7251. The theory is simple. If a through-hole component lead has a large diameter it's for a reason
PCB Libraries, Inc. | https://www.pcblibraries.com/Forum/proportional-throughhole-padstacks_topic90_post1940.html
. So Proportional Padstacks meet or beat IPC-7251. The theory is simple. If a through-hole component lead has a large diameter it's for a reason
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