615 the larger hole size is too tight results

SMT Express, Volume 3, Issue No. 6 - from SMTnet.com

SMT Express, Volume 2, Issue No. 3 - from SMTnet.com

SMT Express, Volume 2, Issue No. 3 - from SMTnet.com Volume 2, Issue No. 3 Thursday, March 16, 2000 Featured Article Return to Front Page Stencil Design for Mixed Technology Through-hole / SMT Placement and Reflow by William E. Coleman, Photo

” larger than the maximum lead diameter 7 Standard Hole Size For Wires •  Lead to hole ratio is based upon automatic component insertion and equipment tolerance

| https://www.eptac.com/wp-content/uploads/2013/06/eptac_07_17_13.pdf

Guide to a Successful Lead-Free Soldering - Blackfox - Premier Training and Certification

Blackfox Training Institute, LLC | https://www.blackfox.com/blog/guide-to-a-successful-lead-free-soldering/

. When you transition to lead-free soldering, you will have to make some changes in the already established PCB-design rules. To guarantee manufacturability and dependability, industry guidelines regulate component lead-pad and land size, track width and spacing, via and through-hole dimensions, and other variables

Blackfox Training Institute, LLC