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Documents The Learning Circuit 40: Learning About Polymer Capacitors
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  • Author Author: tariq.ahmad
  • Date Created: 25 Dec 2018 12:25 AM Date Created
  • Last Updated Last Updated: 4 May 2021 2:37 PM
  • Views 2698 views
  • Likes 11 likes
  • Comments 6 comments
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The Learning Circuit 40: Learning About Polymer Capacitors

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Learning About Polymer Capacitors

The Learning Circuit | element14 presents |  Project Videos

 

 

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Capacitors are a seemingly simple device. In this episode, James goes deep into what makes polymer capacitors different from other capacitor types. Spoiler alert: it is a material found on the cathode side of the capacitor that makes a polymer, a polymer. Additionally, he covers what to consider when trying to switch from a multilayer ceramic capacitor (MLCC) to a polymer.

 

Take the Polymer Capacitor Quiz

Learn more about Passive Components

Join the Experimenting with Polymer Capacitor Competition

Related Episode:  The Learning Circuit 42: Replacing MLCCs with Polymer Capacitors

 

Finding specifications on capacitors varies by manufacturer. Some provide very detailed, yet complicated, charts in their datasheets while others provide on-line tools. In this video James used a simulation tool from KEMET Electronics called K-SIM and one from Murata called Sim Surfer.

 

One downside to these tools is that they are vendor specific. Unlike circuit simulation tools, these "simualtors" are simulating the capacitor's parameters. Many engineers will simply use their design's worst case when trying to get information from these tools. Keep in mind that most will let you export a netlist for use in circuit simulation tools. Unforutantely, those netlists are only valid for the specific conditions that they were generated. For example, if you generate an X5R model at 70°C, you would need a seperate model for 85°C.

 

Often over looked, there are application engineers available to help you. One option is to start with your favorite distributor, like Farnell or Newark. If they do not have someone on their support team that can answer your capacitor questions, they can reach out to manufacturers on your behalf to get application specific data. And, of course, you can leave questions below for help from the element14 community!

 

Supplemental Content:

 

  • The Learning Circuit 29: How Capacitors Work
  • The Learning Circuit 30: Capacitor Substitution Box!

 

Bill of Material:

 

PartManufacturerQuantityBuy KitBuy Kit
Aluminum Polymers

560 µF  SP-CAP

Panasonic1Buy NowBuy Now

100 µF 25V

KEMET1Buy NowBuy Now
EEH-ZE1V151P - 150 µF 35  V (Hybrid)Panasonic1Buy NowBuy Now
16SVPK680M 680 µF 16 VPanasonic1Buy NowBuy Now
Tantalum Polymers
T530X158M2R5ATE005 - 1500 µF KO-CAPKEMET1Buy NowBuy Now
T530X158M2R5ATE005 - 1500 µF KO-CAPKEMET1Buy NowBuy Now
T520V107M006ATE007 - 100 µF 6.3 VKEMET1Buy NowBuy Now
  • polymer capacitors
  • polymers
  • kocap
  • oscon
  • capacitors
  • polymer electrolytic capacitors
  • tantalum
  • e14presents_baldengineer
  • poscap
  • passive components
  • aluminum capacitor
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Top Comments

  • DAB
    DAB over 4 years ago +3
    Very good update on the current capacitor types and issues. I have not been keeping up with the technology changes, so I appreciate the detailed presentation. Well done. DAB
  • baldengineer
    baldengineer over 4 years ago +3
    Update on the "ESR is flat with frequency." In the video, I used Murata's SimSurfing to show the behavior of a ceramic capacitor (MLCC). One thing that puzzled me was that the ESR graph in their simulator…
  • jw0752
    jw0752 over 4 years ago +1
    Thank you for the taste of the complexity of different capacitor types. It would be great to see this essentials further expanded so that we could get more of you normal 1 hour presentation on capacitors…
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  • DAB
    DAB over 4 years ago

    Very good update on the current capacitor types and issues.

    I have not been keeping up with the technology changes, so I appreciate the detailed presentation.

     

    Well done.

     

    DAB

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  • DAB
    DAB over 4 years ago

    Very good update on the current capacitor types and issues.

    I have not been keeping up with the technology changes, so I appreciate the detailed presentation.

     

    Well done.

     

    DAB

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