IPC A 610 QUESTIONS AND SOLUTIONS 2025/2026
GRADED A+
✔✔ Flexible and Rigid-Flex Printed Circuitry - Solder Wicking -> Defect Class 1, 2, 3 -
✔✔Spacing as a result of solder wicking or plating migration violate minimum electrical
clearance
✔✔Attachment -> Acceptable Class 1 - ✔✔Side overhang of flex 10-27
✔✔Attachment -> Acceptable Class 2,3 - ✔✔Side overhang10-27
✔✔Attachme - ✔✔Wetted solder is visible in 10-27
✔✔Marking - ✔✔Provides both product identification and traceability
✔✔Marking - Etched - Acceptable Class 1,2,3 - ✔✔Lines of a number or letter may be
broken provided the breaks do not make the marking illegible
✔✔Marking Etched (including hand printing) - Defect Class 1.2.3 - ✔✔Lines forming a
character are missing or broken to the extent that the character is not legible or is likely
to be confused with another character
✔✔Marking - Screened | Process Indicator - Class 1,2,3 - ✔✔Lines of a number or letter
may be broken (or the ink thin over a portion of
✔✔Marking - Screened | Defect - Class 1,2,3 - ✔✔Open areas of characters are filled
and are not legible, or are likely to be confused with another number or letter
✔✔Marking - Stamped | Acceptable - Class 1, Process Indicator - Class 2,3 - ✔✔-
Marking that has been smeared or blurred but is still legible
- Multiple stamped markings are acceptable provided the general intent can be
determined
✔✔Marking - Laser | Acceptable - Class 1, Process Indicator - Class 2,3 - ✔✔- Multiple
image is still legible
- Missing marking is not more than 10% of the character
✔✔kjlkj - ✔✔
✔✔Marking - Lables - Readability | Acceptable - Class 1,2,3 - ✔✔Spots or voids on
printed surfaces or machine is readable code as permiss
✔✔Defect- Class 1,2,3 - ✔✔Machine readable code
