This test consists of twenty-five multiple-choice questions. All questions are from the video: IPC-A-610F Component Level Acceptance Criteria (DVD-180C). Use the supplied Answer Sheet and circle the letter corresponding to your answer selection for each test item. If more than one answer appears to be correct, pick the one that appears to be the most complete response. If you wish to change an answer, erase your choice completely. When 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% (17 correct answers) or better. Good luck! 1
Answer Sheet 1 True False 2 Yes No 3 A B C D 4 Yes No 5 True False 6 Yes No 7 True False 8 Yes No 9 True False 10 A B C D 11 True False 12 Yes No 13 A B C D 14 Yes No 15 True False 16 A B C D 17 True False 18 A B C D 19 True False 20 Yes No 21 Yes No 22 True False 23 A B C D 24 A B C D 25 Yes No Name: Date: Circle the answer corresponding to the appropriate test question. 2
1. Lead forming (bend radius, space between lead, weld / bend) is designed to provide stress relief to both the component leads and the solder joint. 2. Bend radius dimensions have nothing to do with the thickness of component leads. 3. A tilted component is acceptable when it does not a. violate minimum electrical clearance b. exceed the maximum component height requirement c. affect form, fit or function d. all of the above 4. Is this 90-degree bend radius a defect for Class 3 axial components? 5. This orange device is an example of an axial component. 3
6. Is this a defective bend radius? IPC-A-610F COMPONENT LEVEL ACCEPTANCE CRITERIA 7. This bend radius is to be considered a defect for Class 3. 8. Does the arrow indicate the weld bead for this component? 4
9. This cracked seal is considered a defect for every class of product. 10. To meet minimum Class 3 requirements for lead protrusion, the lead a. does not need to be seen in the hole b. must be two inches above the solder c. must be three inches above the solder d. must be discernible 11. There is an acceptable electrical clearance between these two components. 5
12. Is this adhesive height and circumference acceptable for securing a vertical component? 13. This small amount of adhesive on the land a. is always a defect condition b. assists in preventing solder joint oxidation c. is acceptable for Class 1 and a process indicator for Class 2 d. none of the above 14. Is this amount of adhesive acceptable for staking a Class 2-3 vertical component? 6
15. A lead deformed from repeated bending is always a defect. 16. The arrow indicates a. a burned or charred component b. a witness mark c. advanced dewetting d. improper wetting 17. The following is an example of an acceptable lead indentation for Class 3. 7
18. The following is an example of IPC-A-610F COMPONENT LEVEL ACCEPTANCE CRITERIA a. an acceptable void in the side metallization b. a defective void in the side metallization c. an acceptable nick or chip out d. a defective nick or chip out 19. This is a defect for any class of product. 20. Is this type of damage an example of a process indicator? 8
21. Is this a defect for all three product classes? IPC-A-610F COMPONENT LEVEL ACCEPTANCE CRITERIA 22. A non-press fit connector pin that is more than 50% off center is acceptable for any class of component. 23. The following is an example of a. solder splashes on a pin b. mushrooming on the top of a pin c. exposed basis metal on a pin d. a slightly abused tent stake 9
24. The following is an example of IPC-A-610F COMPONENT LEVEL ACCEPTANCE CRITERIA a. a short circuit b. mushrooming of the top of a pin c. a burr on a pin d. a misaligned pin 25. Is this condition acceptable? 10