IPC-A-610H 1 GENERAL - VOCABULARY ONLY QUESTIONS AND ANSWERS 2024/2025

primary side → defined by master drawing; → typically most complex side; → aka "component side" or "solder destination side" secondary side → side opposite of primary side solder source side → side on which solder is applied; → typically secondary side solder destination side → side toward which solder flows; → typically primary side cold solder connection → exhibits poor wetting; → characterized by gray, porous appearance; → **Not Caused by Motion** common conductors → conductors that have identical or redundant functions 2 0 2 4 /2025 | © copyright | This work may not be copied for profit gain Excel! 1 | P a g e | G r a d e A + | 2 0 24 / 2 0 2 5 conductor diameter → outside wire diameter *not including* insulation wire diameter → outside diameter of wire *including* insulation strand diameter → for stranded wires, the outside diameter of an individual strand electrical clearance → minimum spacing between noncommon uninsulated conductors; → see *Appendix A* engineering documentation → any documents that establish design and design requirements FOD → Foreign Object Debris → matter foreign to the assembly or system Form/Fit/Function → identifying characteristic that if not met would negatively impact the functionality of an assembly high voltage 2 0 2 4 /2025 | © copyright | This work may not be copied for profit gain Excel! 1 | P a g e | G r a d e A + | 2 0 24 / 2 0 2 5 → must be specified or requested by User/Customer; → requires special attention to arc potentials due to high voltage causing high risk of arcing; → *no sharp edges