This test consists of twenty multiple-choice questions. All questions are from the video: IPC-A-610E Common Inspection Errors DVD-71C). Use the supplied Answer Sheet and circle the letter or word corresponding to your selection for each test item. If more than one answer appears to be correct, pick the answer that seems to be the most complete response. Should you wish to change an answer, erase your choice completely. When you are finished, check to make sure you have answered all of the questions. Turn in the test materials to the instructor. The passing grade for this test is 70% (14 correct answers), or better. Good luck! 1
ANSWER SHEET Name: Date: 1 A B C D 2 A B C D 3 A B C D 4 A B C D 5 A B C D 6 A B C D 7 A B C D 8 A B C D 9 A B C D 10 A B C D 11 Yes No 12 Yes No 13 Yes No 14 A B C D 15 Yes No 16 A B C D 17 A B C D 18 Yes No 19 Yes No 20 A B C D 2
1. Without an internationally recognized consensus workmanship standard, such as the IPC-A-610 a. each company would use its own standard b. the industry would lack a common inspection language c. there would be inconsistent product reliability 2. Over inspection can a. cost your company time and money b. make you more efficient c. make your products more reliable 3. Class 1, 2 and 3 inspection criteria is determined by a. a QA professional b. the inspector c. the customer 4. The inspector s job is to use the IPC-A-610 to judge if the solder connections are a. target or acceptable b. process indicators c. defects 5. Evaluate the acceptability of this solder joint a. target b. acceptable c. process indicator d. defect 3
6. Evaluate the acceptability of this solder joint for Class 2 and 3. a. target b. acceptable c. process indicator d. defect 7. When a Class 1 product is judged by Class 3 standards, it a. makes the product more desireable b. can cost your company unnecessary time and money c. creates a Class 3 product 8. Identify the side of the board for this through hole assembly. a. solder source side b. solder destination side c. secondary side d. bottom of the board 4
9. Minimum electrical clearance is based upon a. the thickness of the solder mask that covers a conductor b. how much voltage exists between conductors c. the clinching of component leads 10. The criteria for electrical conductor spacing may be found in a. Appendix A of the IPC-A-610 b. IPC-2221 Generic Standard on Printed Circuit Board Design c. the approved customer documentation for the assembly 11. Is this solder joint defective for Class 2 and 3? 12. Is this solder joint acceptable for Class 2 and 3? 5
13. Is this amount of solder depression acceptable for Class 2 and 3? 14. A minimum of 50% vertical fill may be allowed for Class 2 when a. there is a thermal heat sink plane surrounding the plated through hole b. products are designed for aerospace applications c. lead free solder is used 15. Can a circuit board assembly containing this part clearance be shipped for Class 2 and 3? 16. The minimum side joint length for a gull wing lead with a short foot length is a. 100% of the foot length b. 75% of the foot length c. 50% of the foot length d. 25% of the foot length 6
17. Solder should not touch the body of gull wing components except for a. fine pitch QFPs b. BGAs c. plastic SOICs and SOTs d. QFNs 18. Is this an example of a Bottom Termination Component (BTC)? 19. Would you evaluate this as a defective condition for Class 2 and 3? 20. Billboarding occurs when a chip component a. rotates onto the side of the termination edge during assembly b. stands on one termination end c. is soldered to traces instead of lands d. has defective terminations 7