| https://www.eptac.com/faqs/ask-helena-leo/ask/bottom-termination-parts
. To get the numbers for Bow and Twist, one needs to start with IPC-2221 ”Generic Standard for Printed Board Design” section 5.2.4 Bow and Twist. This is the first place the information is provided as it states
| https://www.eptac.com/wp-content/uploads/2021/10/EPTAC_DataSheet_IPCDesigner_CID.pdf
(3-days lecture, 1-day review and testing), goes beyond the fundamentals of component placement and track routing to encompass an understanding of all the elements that go into product development utilizing IPC-2221
| https://www.eptac.com/wp-content/uploads/2021/10/EPTAC_DataSheet_IPCDesigner_CID-Plus.pdf
. The program continues the utilization of IPC-2221 “Generic Standard on Printed Board Design” and IPC-2222 “Sectional Design Standard for Rigid Organic Printed Boards
| https://www.eptac.com/wp-content/uploads/2015/02/eptac_03_18_15-1.pdf
| https://www.eptac.com/faqs/ask-helena-leo/ask/pcb-design-for-conformal-coating
4.6.2.1, Conformal coating Types and Thicknesses will get into the different types of coatings and their functionality. All of it is too large to add to this post, but you should have a copy of IPC-2221 in your library for help in designing PCBs