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Q&A Capacitor ESR vs. Impedance

One of the ceramic capacitors that I've found(link to the capacitor) specifies the following characteristics at 10 kHz: The difference in value is quite significant, almost 100 fold. Which grap...

3 answers  ·  posted 3y ago by 2kind‭  ·  last activity 3y ago by TonyStewart‭

Question capacitor ESR ESL
#2: Post edited by user avatar 2kind‭ · 2021-05-08T13:39:18Z (over 3 years ago)
  • One of the ceramic capacitors that I've found([link to the capacitor](https://product.tdk.com/en/search/capacitor/ceramic/mlcc/info?part_no=CGA6P1X7R1N106K250AC&utm_source=mlcc_automotive_general_en.pdf&utm_medium=catalog)) specifies the following characteristics:
  • ![Impedance and ESR graph](https://electrical.codidact.com/uploads/xWyLQDx2uh8CWkVuDJcDCpoC)
  • The difference in value is quite significant, almost 100 fold.
  • Which graph on the picture above better represents real-world use-case?
  • What is the point of specifying the ESR solely for AC loads?
  • One of the ceramic capacitors that I've found([link to the capacitor](https://product.tdk.com/en/search/capacitor/ceramic/mlcc/info?part_no=CGA6P1X7R1N106K250AC&utm_source=mlcc_automotive_general_en.pdf&utm_medium=catalog)) specifies the following characteristics at 10 kHz:
  • ![Impedance and ESR graph](https://electrical.codidact.com/uploads/xWyLQDx2uh8CWkVuDJcDCpoC)
  • The difference in value is quite significant, almost 100 fold.
  • Which graph on the picture above better represents real-world use-case?
  • What is the point of specifying the ESR solely for AC loads?
#1: Initial revision by user avatar 2kind‭ · 2021-05-08T10:43:48Z (over 3 years ago) 
Capacitor ESR vs. Impedance
One of the ceramic capacitors that I've found([link to the capacitor](https://product.tdk.com/en/search/capacitor/ceramic/mlcc/info?part_no=CGA6P1X7R1N106K250AC&utm_source=mlcc_automotive_general_en.pdf&utm_medium=catalog)) specifies the following characteristics:
![Impedance and ESR graph](https://electrical.codidact.com/uploads/xWyLQDx2uh8CWkVuDJcDCpoC)

The difference in value is quite significant, almost 100 fold. 

Which graph on the picture above better represents real-world use-case?

What is the point of specifying the ESR solely for AC loads?
capacitor ESR ESL