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Polymer Capacitor Quiz

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Test your polymer capacitor knowledge on how they achieve benefits such as a low ESR, improved stability, and greater tolerance for high ripple currents.

Passive Components | Resource | Experimenting with Polymer Capacitors

Polymer Capacitors

Polymer Capacitors
Complete our Polymer Capacitors course, earn 100% on the quiz, leave a comment in the document...

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. 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.

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  • Great info there. I am really happy how some passives have improved.

    Recently used 10uf MLCC for a project and they are very small! I used

    to use polarized Aluminum caps for inputs, so this is pretty nice, and not

    too expensive even on Mouser. A friend was telling me about "organic

    Aluminum capacitors" to replace Tants. Anyone know about these?

     

    "It is estimated that there are less than 50 years left of tantalum resources,

    based on extraction at current rates."

     

    Something to think about...

  • in reply to pjnoxon

    organic Aluminum capacitors

    Polymer or Polymer Electrolytics are organic. Some manufacturers include “organic” in their name/description, some don’t.

     

    There are both polymer aluminum and polymer tantalum. The aluminums come in a chip and can style while Polymer Tantalums only come in chip style. For maximum capactiance in a package size tantalum is still significantly more “volumetrically efficient.”

     

    Keep in mind with either type, the “organic polymer” is the cathode layer, not the dielectric.

     

    You’ll probably find this intro polymer video helpful.

     

    “It is estimated that there are less than 50 years left of tantalum resources”

    That estimate is out of date and wildly inaccurate. When it first surfaced (excuse the pun) there were a very limited number of mines in operation. Since that statement was made, mines in multiple parts of the world have been discovered. Currently, most of them are not in operation for economic reasons. (Other sources are much cheaper.)

     

    Ironically, another reason that statement is out of date is because when it was made, it was predicted tantalum usage would decline faster than it did. However, heavy polymer-tantalum usage in tablets and mobile phones has kept its usage relatively high.

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  • in reply to pjnoxon

    organic Aluminum capacitors

    Polymer or Polymer Electrolytics are organic. Some manufacturers include “organic” in their name/description, some don’t.

     

    There are both polymer aluminum and polymer tantalum. The aluminums come in a chip and can style while Polymer Tantalums only come in chip style. For maximum capactiance in a package size tantalum is still significantly more “volumetrically efficient.”

     

    Keep in mind with either type, the “organic polymer” is the cathode layer, not the dielectric.

     

    You’ll probably find this intro polymer video helpful.

     

    “It is estimated that there are less than 50 years left of tantalum resources”

    That estimate is out of date and wildly inaccurate. When it first surfaced (excuse the pun) there were a very limited number of mines in operation. Since that statement was made, mines in multiple parts of the world have been discovered. Currently, most of them are not in operation for economic reasons. (Other sources are much cheaper.)

     

    Ironically, another reason that statement is out of date is because when it was made, it was predicted tantalum usage would decline faster than it did. However, heavy polymer-tantalum usage in tablets and mobile phones has kept its usage relatively high.

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