The IPC classifications set the rules to follow when designing a printed circuit board. And between Class 2 and Class 3, the design requirements are fairly different. How much do you know about the different design rules for IPC Class 2 and Class 3? Take the quiz and find out!

Results Congratulations, you sure know a lot about the different design rules between IPC Class 2 and Class 3. We can help you design and build your IPC Class 3 PCB It looks like you could still learn a thing or two about the different design rules for IPC Class 2 and Class 3 next #1. What is IPC? The International Printed Circuit Organization The Association Connecting Electronics Industries The International Patent Classification next #2. What is IPC Class 2 for? For general electric boards with a limited life and a “simple” function. For dedicated service electronic products – boards that have an extended life. For products where continued high performance or performance-on-demand is critical. next #3. What kind of boards usually require IPC-6012DS Class 3A? Boards for VR headsets. Boards for smartphones and tablets. Boards for space and military avionics. next #4. What does happen when a surface-mount component is slightly placed off pad during assembly for a Class 3 board? This is a visual defect that does not impact the inspection. The electrical and mechanical performance of the board have to be tested to pass the inspection. This assembly misstep will cause the board to fail the inspection. next #5. What is the amount of barrel fill required for through-hole leads for IPC Class 2 boards? 50% 75% 90% next #6. Which of the following is true about annular ring requirements for IPC Class 3 boards? IPC Class 3 has the exact same requirements as IPC Class 2. IPC Class 3 allows breakouts from the annular ring. IPC Class 3 does not accept any lifted or fractured annular rings. next #7. When a minimum lateral spacing is maintained, what is the breakout of the hole from land allowed by IPC Class 2? 60-degree breakout 90-degree breakout 180-degree breakout next #8. For IPC Class 3, the minimum internal annular ring cannot be… Less than 1 mil. Less than 2 mils. More than 2 mils. next #9. And the minimum external annular ring for IPC Class 3 cannot be… Less than 1 mil. Less than 2 mils. More than 2 mils. next #10. What is the minimum dielectric for IPC Class 2 and Class 3? 2 mils for Class 2 and 1 mil for Class 3. 3 mils for Class 2 and 2 mils for Class 3. 3.5 mils for both Class 2 and Class 3. next #11. What is the void in copper requirements for IPC Class 2 boards? One void in 5% of the holes. One void in 15% of the holes. Two voids in 15% of the holes. next #12. What is the through-hole plating thickness requirement for IPC Class 3 boards? 0.8 mil 1 mil 2 mils finish

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