Imagineering, Inc. | https://www.pcbnet.com/capabilities/assembly/technology-roadmap/
(HDI) Finish Hole Size • Mechanical Drill - 4 mil (HDI) • Laser Drill - 2.5 mil (HDI) True Hole Position +/-.0015" Finish Hole Size Tolerance • PTH - +/-.0015" • Non-PTH - +/-.001" Aspect Ratio (Board Tks./FHS) 30 Heavy Copper
Imagineering, Inc. | https://www.pcbnet.com/capabilities/fabrication/technology-roadmap/
(HDI) Finish Hole Size • Mechanical Drill - 4 mil (HDI) • Laser Drill - 2.5 mil (HDI) True Hole Position +/-.0015" Finish Hole Size Tolerance • PTH - +/-.0015" • Non-PTH - +/-.001" Aspect Ratio (Board Tks./FHS) 30 Heavy Copper
PCB Libraries, Inc. | https://www.pcblibraries.com/Forum/disclaimer_topic2478.html
. The calculator mathematical model for land pattern calculation is derived from IPC-7351, which uses the Terminal Lead Tolerance, a Manufacturing Tolerance and the default Solder Joint Goals derived from IPC-J-STD-001 (not IPC-7351
PCB Libraries, Inc. | https://www.pcblibraries.com/Forum/topic2478&OB=DESC.html
. The calculator mathematical model for land pattern calculation is derived from IPC-7351, which uses the Terminal Lead Tolerance, a Manufacturing Tolerance and the default Solder Joint Goals derived from IPC-J-STD-001 (not IPC-7351
PCB Libraries, Inc. | https://www.pcblibraries.com/forum/topic2478&OB=ASC.html
. The calculator mathematical model for land pattern calculation is derived from IPC-7351, which uses the Terminal Lead Tolerance, a Manufacturing Tolerance and the default Solder Joint Goals derived from IPC-J-STD-001 (not IPC-7351
PCB Libraries, Inc. | https://www.pcblibraries.com/forum/topic2983&OB=ASC.html
? Anyway, it appears that the tolerance does not make a difference in the footprint names (or their descriptions)... so if you made a footprint for an AVX cap
PCB Libraries, Inc. | https://www.pcblibraries.com/forum/RSS_entended-footprint-names_topic1803.xml
lengths were different and the tolerance was the same. its just as easy to add a -1 or -2 to the footprint name since you would have to go back and look at the actual min max values for the pin length any ways
PCB Libraries, Inc. | https://www.pcblibraries.com/forum/topic474&OB=ASC.html
/ts5b.pdf Entered dimensions were: D1 and D were put in as the same value. E Min was put in as 13.85 mm based on using a +/- 0.25 mm tolerance which I used based on the main tolerance they'd used of
PCB Libraries, Inc. | https://www.pcblibraries.com/forum/transistor-outline-to-dpak-query_topic474_post1410.html
/ts5b.pdf Entered dimensions were: D1 and D were put in as the same value. E Min was put in as 13.85 mm based on using a +/- 0.25 mm tolerance which I used based on the main tolerance they'd used of
PCB Libraries, Inc. | https://www.pcblibraries.com/forum/v2020-library-expert-enterprise-features_topic2423.html
. Here is an image for IPC-7351B Fabrication Tolerance: Here is the Root Mean Square (RMS) mathematical model for calculating the pad Length in IPC-7351B: L = Lead Length F = Fabrication P = Placement (Assembly
