PCB components are the functional part of the board and designers should know everything about them. Take this quiz to test your knowledge on PCB components.

Results Congratulations! You are ready for PCB assembly . It may still be worth your time going through our DFM Handbook Oops! It looks like components aren't your strength. That's ok, Sierra Circuits checks for component errors. And you can learn more in our DFM Handbook next #1. Can you spot the passive component? Resistor Diode Transistor next #2. What is impedance? The ratio of the change in an electric charge in a system to the corresponding change in its electric potential Electromotive force to be generated by a change in the current flowing Resistance, inductive reactance, and capacitive reactance in AC circuits next #3. Utilization of 3D component models in the PCB layout can assist with: Electrical clearance Component clearance Core material selection next #4. What is Surface Mount Technology (SMT)? Component leads are placed into drilled holes on a bare PCB Components are mounted directly onto the surface of the PCB None of the above next #5. The life cycle of an electronic component is an important attribute that should be considered during PCB assembly. True False next #6. Identify the quad flat no-leads (QFN) package. Answer 1 Answer 1 Answer 2 Answer 2 next #7. Why use a Ball Grid Array (BGA) in a circuit? BGAs have a higher density of connections than a conventional SMT package of the same size BGAs are mounted closer to the surface of the PCB which leads to a lower lead inductance, lower levels of distortion, and superior electrical performance All of the above next #8. What are the factors that play a prominent role in components placement? Placement of support components like resistors and capacitors initially, and then placing big/main/critical components such as MCU, DSP, FPGA, DDR, and clock devices around them Utilization of 50 or 100mil as component grid to place big components like QFP, BGA, SOP, SOIC, or through hole connectors and isolation of analog, digital, and power supply section Clock driver/synchronizer should not be located close to clock oscillator next #9. What is the function of a bypass capacitor? To conduct an alternating current around a component or group of components. The AC is removed from an AC/DC mixture To decouple AC and DC signals so as not to disturb the quiescent point of the circuit when AC signals are injected at the input Bypasses DC noise present in AC signals next #10. What is the purpose of local fiducial marks with respect to component placement? Fiducials serve as the reference position during PCB assembly Fiducials assist in choosing the prepreg material Fiducial hide from machine vision recognition systems next #11. What do inaccurate BOMs lead to? Wrong component quantity/inaccurate inventory Incorrect costing of product/accounting variances All of the above finish