IPC A 610 Study Guide With Questions And Detailed Answers /Be Sure To Pass 100 %/Graded A+

1. Describe the ESD susceptibility symbol. - ANSWER A triangle with a reaching hand and a slash across both. 2. Static Shielding Packaging - ANSWER Prevents an electrostatic discharge from passing through the package and into the assembly causing damage. 3. Antistatic (low charging) packaging materials - ANSWER Used to provide inexpensive cushioning and intermediate packaging for ESD sensitive (ESDS) items. 4. Are eating, drinking or use of tobacco products in the work area permitted? - ANSWER No. 5. Should work areas be kept clean and neat? - ANSWER Yes. 6. What are typical contaminants that might cause soldering and coating problems? - ANSWER Body salts and oils, and unauthorized hand creams. 7. What should be done to prevent ESD and EOS damage to sensitive components? - ANSWER All handling, unpacking and assembly shall be performed at a static-controlled workstation. 8. Lane width or land diameter of =.25 to =.5mm will have a ... - ANSWER magnification power inspection range of 7.5x to 10x and a maximum referee of 20x. 9. A main goal of the IPC Professional Training and Certification Programs is to... - ANSWER provide an understanding of accept/reject criteria to enhance an individual's ability and motivation to consistently and correctly apply the technical discrimination criteria. 10. How long are IPC certs good for? - ANSWER Master IPC Trainer, Certified IPC Trainer, and Certified IPC Specialist certifications expire after two years. Certification is valid through the last day of the month, regardless of the day of the month the certification was granted. 11. IPC Certifications are personal and portable credentials... - ANSWER granted to individuals, not the employing company. Certifications are personal property and are retained when changing employment. 12. Certified IPC Specialist recertification may be provided by... - ANSWER any Master IPC Trainer or Certified IPC Trainer. 13. Certified IPC Trainers are authorized to grant a single extension of _ days to a certified IPC specialist. Such exceptions should be noted on the certification document. - ANSWER 90 14. What does a certified IPC specialist training program accomplish? - ANSWER Certified IPC Specialist training programs will train, test and certify in the correct application of the criteria for all product classes. 15. Materials authorized for reproduction by the user will be so identified and provided by IPC in ____ format, e.g. student training materials (previously called student handbooks) - ANSWER electronic 16. An applicant who completes the training course but fails to pass the certification measurement criteria can retest not sooner than 24 hours nor more than _ days following the original testing, except as authorized in writing by IPC's director of certification. - ANSWER 90 17. Who do you swear to? - ANSWER BATMAN 18. Disposition - ANSWER The determination of how defects should be treated. These include rework, use as is, scrap, and repair. 19. Who dispositions defect conditions? - ANSWER The manufacturer, based on design, service and customer requirements. 20. Process Indicator Conditions - ANSWER A condition (not a defect) that does not affect the form, fit or function of a product. 21. Process indicators should be... - ANSWER monitored as part of the process control system 22. Is disposition of individual process indicators required? - ANSWER No, and affected products should be used as-is. 23. Conditions Not Specified - ANSWER A condition that is neither a defect, nor a process indicator. A condition not specified may be considered acceptable unless it can be established that the condition affects user-defined form, fit or function. 24. Primary Side - ANSWER The side of a packaging or interconnecting structure (PCB) defined as primary on the master drawing. This is usually the side with the most complex or greatest number of components. 25. The Primary Side is also known as... - ANSWER the component side, or the solder destination side (in through-hole mounting technology). 26. Solder source side - ANSWER The side of the PCB to which solder is applied. This is usually the secondary side, but might be the primary side in some cases. 27. Solder Destination Side - ANSWER The side of the PCB that the solder flows toward in through-hole technology. The destination is normally the primary side of the PCB, but might be the secondary side in some cases. 28. Cold Solder Connection - ANSWER A solder connection that exhibits poor wetting and that is characterized by a grayish porous appearance. 29. What can cause a cold solder connection? - ANSWER Excessive impurities in the solder, inadequate cleaning prior to the soldering, and/or insufficient application of heat during the soldering process. 30. Any violation of minimal electrical clearance is a... - ANSWER defect condition for all classes. 31. Meniscus (component) - ANSWER Sealant or encapsulant on a lead, protruding from the seating plane of the component. This includes ceramic, epoxy or other composites, and f lash from molded components. 32. Nonfunctional Land - ANSWER A land that is not connected electrically to the conductive pattern on its layer. 33. Wire Overwrap - ANSWER A wire/lead that is wrapped more than 360 degrees and remains in contact with the terminal post. 34. Wire Overlap - ANSWER A wire/lead is wrapped more than 360 degrees and crosses over itself (and does not remain in contact with the terminal post). 35. Examples and illustrations... - ANSWER are often grossly exaggerated in order to depict the reasons for this classification. 36. Inspection Methodology - ANSWER The inspector does not select the class for the assembly under inspection. 37. Verification of Dimensions - ANSWER The actual measurements provided in this document (i.e., specific part mountings and solder fillet dimensions and determination of percentages) are not required except for referee purposes. 38. The tolerance for magnification aides is... - ANSWER +/- 15% of the selected magnification power. 39. If documents other than IPC-A-610 are cited, the order of precedence shall be defined in the _ - ANSWER Procurement documents 40. Target Condition - ANSWER A condition that is close to perfect, but is not always achievable and may not be necessary to ensure the reliability of the assembly. 41. Acceptable Condition - ANSWER A condition that, while not necessarily perfect, will maintain integrity and reliability of the assembly 42. Defect Condition - ANSWER The form, fit or function of the assembly is inadequate for use in its end use environment. 43. A defect for Class 1... - ANSWER automatically implies a defect for Class 2 and 3. A defect for Class 2 implies a defect for Class 3. 44. Illumination at the surface of workstations should be at least _ - ANSWER 1000lm/m2 [approximately 93 foot candles]. 45. Light sources should be selected to prevent _. - ANSWER shadows 46. IPC-T-50 - ANSWER Terms and definitions for interconnecting and packaging electronic circuits. 47. Electrostatic Discharge (ESD) - ANSWER The rapid transfer of static electric charge from one object to another of a different potential that was created from electrostatic sources. 48. Electrical Overstress (EOS) - ANSWER The internal result of an unwanted application of electrical energy that results in damaged components. 49. Class 1 Product - ANSWER General Electronics Product - includes products where the major requirement is function of the completed assembly. 50. Class 2 Product - ANSWER Dedicated Service Electronic Product - Continued performance and extended life required. Uninterrupted service is desired but not required. 51. Class 3 Product - ANSWER High Performance Electrical Product - Continued high performance or performance-on-demand is critical. Equipment downtime cannot be tolerated. Equipment might be used for life-support or other critical systems. 52. Who as the ultimate responsibility for identifying the class to which the assembly is evaluated? - ANSWER The Customer. 53. Shall - ANSWER Invokes a requirement for manufacturers of all classes or product, and failure to comply with the requirement is a noncompliance to this standard. 54. Order of Precedence in event of conflict 1 - ANSWER 1. Procurement as agreed and documented between customer and supplier. 55. Order of Precedence in event of conflict 2 - ANSWER Master drawing or master ass. drawing reflecting the customer's detailed requirements. 56. Order of Precedence in event of conflict 3 - ANSWER IPC-1-610 when invoked by the customer or contract.