Ipc-7352 Pdf [exclusive] -

The standard maintains the concept of three distinct "Performance Classification" levels, which allow designers to choose the right footprint size based on the product's complexity:

If you are familiar with the old standard, you know about the three density levels: Ipc-7352 Pdf

This might sound like splitting hairs, but in Surface Mount Technology (SMT), hair-splitting is the name of the game. By customizing these three variables, IPC-7352 produces a pad that is optimized for the specific way the component connects electrically and mechanically to the board. The standard maintains the concept of three distinct

Where small components stand up on one end during reflow. Solder Bridging: Where solder shorts two adjacent pins. but in Surface Mount Technology (SMT)