: Solder paste deposits should be centered perfectly on the copper PCB pad.
In the SMT (Surface Mount Technology) assembly process, solder paste printing is the first step. Experienced engineers know that a misprinted paste cannot be corrected downstream. IPC-7527 serves as a standardized "judge" for determining whether a solder paste deposit passes or fails. ipc7527 pdf free hot download
Detailed rules for what "good" solder paste should look like, including coverage and alignment. : Solder paste deposits should be centered perfectly