element14 has been talking about polymer capacitors a lot in the last few months. Before we talk too much, we thought we would give Community members a chance to show their stuff. We wrote a 25-question quiz on polymer capacitors for you to take. Have fun!
After you have answered all the questions, click "Submit Answers." Once you have scored a 100%, leave a comment on this page, and give the page a rating and you will earn a Polymer Capacitor badge and receive a little swag prize to honor your achievement. If you don't get a perfect score, that's fine. You will be given a link to the sources used to write the quiz. You can take it as many times as you want.
1) True or False: A polymer capacitor is a type of electrolytic capacitor in which a conductive polymer is used as the cathode.
2) True or False: Polymer hybrid aluminum capacitors combine both a liquid and conductive polymer to serve as the electrolyte. The polymer offers high conductivity and a low ESR while the liquid portion of the electrolyte provides higher capacitance ratings due to its large effective surface area.
3) _________ polymer aluminum capacitors are intended for larger capacitance values compared to rectangular polymer capacitors.
4) Polymer tantalum capacitors employ a ________ polymer as the cathode and have a tantalum _____.
5) True or False: One benefit of polymer capacitors is that they are self-healing.
6) Choose the best answer from the selections below. Polymer tantalum electrolytic capacitors which are exposed to surge, peak, or pulse currents in highly inductive circuits, require a ___________.
7) Polymer tantalum electrolytic capacitors use high purity ________ tantalum powder as an anode with tantalum pentoxide (Ta2O5) as a dielectric.
8) True or False: The capacitance of polymer capacitors drifts over the course of time and temperature changes.
9) Conductive polymer electrolyte allows the realization of significant improvements in capacitor ___________.
10) True or False: The high conductivity of PEDOT in comparison to the conductivity of manganese dioxide (MnO2) provides a low ESR in polymer tantalum capacitors, making them ideal for high frequency applications.
11) Conventional electrolytic capacitors utilize a _______ electrolyte while conductive polymer capacitors use a ______ electrolyte.
12) True or False: One of the benefits of polymer electrolytic capacitors is that they do not experience the dry-out of electrolyte.
13) Since polymer capacitors have low ________, using them as input and output smoothing capacitors can decrease the size of power supply units.
14) True or False: Over a wide frequency range, polymer capacitors typically exhibit similar capacitance stability to that of multi-layer ceramic capacitors (MLCC).
15) True or False: For the same volume and footprint, polymer capacitors achieve a higher level of capacitance than a comparable MLCC.
16) Select the best answer from the options listed below. Which of the following indicates that it is a wet electrolytic capacitor and NOT a polymer capacitor?
17) The diagram listed below is a simplified illustration of an aluminum polymer capacitor. Identify the location of the conductive polymer.
18) What is the preferred conducting polymer currently used in solid electrolyte capacitors today?
19) Why is polymeric material used in the cathode of solid metal polymer capacitors?
20) True or False: Low-profile, layered polymer aluminum capacitors use conductive polymer as the cathode and have an aluminum anode, and are often used in handheld electronic devices.
21) In fabricating a polar polymer dielectric capacitor, a physical vapor ________ process is used to coat polycarbonate foil with an aluminum layer to act as the electrode plates.
22) True or False: PEDOT is commonly used as a polymeric anode material for solid tantalum capacitors.
23) True or False: Polymer foils such as polystrene and Teflon (PTFE) are used in the majority of static capacitors today because they provide better stability at high temperatures and age better than paper dielectrics.
24) Choose the best selection from the list below. What is NOT a very common circuit application of conductive polymer capacitors?