IPC A 610 CORRECT EXAMS ANSWERS AND
QUESTIONS SET A+
✔✔Does Class 3 mean every cosmetic imperfection is a defect? - ✔✔No; apply the
actual applicable Class 3 criteria.
✔✔Does Class 1 mean anything that functions is acceptable? - ✔✔No; Class 1 still has
defined acceptance requirements.
✔✔What is an Acceptable condition? - ✔✔A condition that meets the applicable
acceptance requirements.
✔✔What is a Defect? - ✔✔A condition that fails an applicable acceptance requirement
and requires disposition.
✔✔What is a Process Indicator? - ✔✔A condition indicating process variation that is not
itself automatically a defect.
✔✔Is a Process Indicator automatically a defect? - ✔✔No.
✔✔Does a Process Indicator automatically require rework? - ✔✔No.
✔✔What are Conditions Not Specified? - ✔✔Conditions for which the standard does not
provide an acceptance requirement.
✔✔What should be done with a Condition Not Specified? - ✔✔Resolve it through
applicable documented requirements rather than automatically accepting or rejecting it.
✔✔What are Specialized Designs? - ✔✔Designs with characteristics requiring
specifically documented acceptance requirements when normal A-610 criteria do not
adequately apply.
✔✔What does "shall" indicate? - ✔✔A mandatory requirement.
, ✔✔What does "should" indicate? - ✔✔A recommendation.
✔✔What is requirements flowdown? - ✔✔Communicating all applicable customer,
engineering, class and workmanship requirements to the people responsible for
producing and accepting the product.
✔✔What is personnel proficiency? - ✔✔The ability of personnel to correctly understand
and apply the applicable requirements.
✔✔What ultimately controls an inspection decision? - ✔✔The applicable acceptance
requirement and invoked documentation.
✔✔What does F/F/F mean? - ✔✔Form, Fit and Function.
✔✔What does MEC mean? - ✔✔Minimum Electrical Clearance.
✔✔What is minimum electrical clearance? - ✔✔The required separation between
conductive features to prevent an unintended electrical path or breakdown.
✔✔Is there one universal MEC value for all assemblies? - ✔✔No.
✔✔Can mechanical hardware create an electrical-clearance violation? - ✔✔Yes.
✔✔What are common conductors? - ✔✔Conductors intentionally connected to the
same electrical potential.
✔✔What are noncommon conductors? - ✔✔Conductors that are not intended to be
electrically common.
✔✔Why is the distinction between common and noncommon conductors important? -
✔✔Unintended connection between noncommon conductors can create a short.
✔✔What is a nonfunctional land? - ✔✔A land having no intended electrical function for
that connection on that layer.
✔✔What is the Primary Side? - ✔✔The side designated as primary by the applicable
board/assembly documentation.
✔✔What is the Secondary Side? - ✔✔The side opposite the designated Primary Side.
✔✔What is the Solder Source Side? - ✔✔The side from which solder is introduced.
✔✔What is the Solder Destination Side? - ✔✔The side toward which solder flows.
QUESTIONS SET A+
✔✔Does Class 3 mean every cosmetic imperfection is a defect? - ✔✔No; apply the
actual applicable Class 3 criteria.
✔✔Does Class 1 mean anything that functions is acceptable? - ✔✔No; Class 1 still has
defined acceptance requirements.
✔✔What is an Acceptable condition? - ✔✔A condition that meets the applicable
acceptance requirements.
✔✔What is a Defect? - ✔✔A condition that fails an applicable acceptance requirement
and requires disposition.
✔✔What is a Process Indicator? - ✔✔A condition indicating process variation that is not
itself automatically a defect.
✔✔Is a Process Indicator automatically a defect? - ✔✔No.
✔✔Does a Process Indicator automatically require rework? - ✔✔No.
✔✔What are Conditions Not Specified? - ✔✔Conditions for which the standard does not
provide an acceptance requirement.
✔✔What should be done with a Condition Not Specified? - ✔✔Resolve it through
applicable documented requirements rather than automatically accepting or rejecting it.
✔✔What are Specialized Designs? - ✔✔Designs with characteristics requiring
specifically documented acceptance requirements when normal A-610 criteria do not
adequately apply.
✔✔What does "shall" indicate? - ✔✔A mandatory requirement.
, ✔✔What does "should" indicate? - ✔✔A recommendation.
✔✔What is requirements flowdown? - ✔✔Communicating all applicable customer,
engineering, class and workmanship requirements to the people responsible for
producing and accepting the product.
✔✔What is personnel proficiency? - ✔✔The ability of personnel to correctly understand
and apply the applicable requirements.
✔✔What ultimately controls an inspection decision? - ✔✔The applicable acceptance
requirement and invoked documentation.
✔✔What does F/F/F mean? - ✔✔Form, Fit and Function.
✔✔What does MEC mean? - ✔✔Minimum Electrical Clearance.
✔✔What is minimum electrical clearance? - ✔✔The required separation between
conductive features to prevent an unintended electrical path or breakdown.
✔✔Is there one universal MEC value for all assemblies? - ✔✔No.
✔✔Can mechanical hardware create an electrical-clearance violation? - ✔✔Yes.
✔✔What are common conductors? - ✔✔Conductors intentionally connected to the
same electrical potential.
✔✔What are noncommon conductors? - ✔✔Conductors that are not intended to be
electrically common.
✔✔Why is the distinction between common and noncommon conductors important? -
✔✔Unintended connection between noncommon conductors can create a short.
✔✔What is a nonfunctional land? - ✔✔A land having no intended electrical function for
that connection on that layer.
✔✔What is the Primary Side? - ✔✔The side designated as primary by the applicable
board/assembly documentation.
✔✔What is the Secondary Side? - ✔✔The side opposite the designated Primary Side.
✔✔What is the Solder Source Side? - ✔✔The side from which solder is introduced.
✔✔What is the Solder Destination Side? - ✔✔The side toward which solder flows.
