Visual examples for various termination styles and component alignment.
"Use IPC standards." (Too vague.)
Specific criteria for SMT (Surface Mount Technology) and Through-Hole connections, including wetting angles and solder volume. Component Damage: ipc-a-610f pdf
The PDF recommends against using a microscope stronger than 10x for pass/fail, as it will show "defects" that do not impact reliability (dust particles look like mountains at 100x). Visual examples for various termination styles and component
Compared to the previous Revision E, the "F" version introduced technical advancements including: IPC A-610 – Acceptability of Electronic Assemblies Compared to the previous Revision E, the "F"
(Revision F) is an internationally recognized standard that provides the visual and workmanship acceptability criteria for electronic assemblies. Released in August 2014, Revision F serves as a critical benchmark for manufacturers and quality assurance professionals to ensure the reliability and quality of printed circuit board assemblies (PCBAs). Core Purpose and Scope