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Muruta Capacitors

GRM31CL8EL225KE07_(3216M(1206), -(MURATA), 2.2μF, DC 100V)- industrial Grade

https://search.murata.co.jp/Ceramy/image/img/A01X/G101/ENG/GRM31CL8EL225KE07-01A.pdf

GRT32EC70J107ME13_ (1210, X7S:EIA, 100uF, DC6.3V)

https://search.murata.co.jp/Ceramy/image/img/A01X/G101/ENG/GRT32EC70J107ME13-01.pdf

( KCM55 Series [Rat. Vol.: DC25V to DC100V] )for Automotive in accordance with AEC-Q200

https://search.murata.co.jp/Ceramy/image/img/A01X/G101/ENG/KCM55_E.pdf

GCM32EM8EA227ME08_ (1210, X8M, 220uF, DC2.5V)

https://search.murata.co.jp/Ceramy/image/img/A01X/G101/ENG/GCM32EM8EA227ME08-01.pdf

GCG32ER70J476KE01_

https://search.murata.co.jp/Ceramy/image/img/A01X/G101/ENG/GCG32ER70J476KE01-01.pdf

RCE_X7R_X7S_25V-100V_E.pdf

https://search.murata.co.jp/Ceramy/image/img/A01X/G101/ENG/RCE_X7R_X7S_25V-100V_E.pdf

GCJ31BR73A472KXJ1_(3216M(1206), X7R(EIA), 4700pF, DC 1000V)

https://search.murata.co.jp/Ceramy/image/img/A01X/G101/ENG/GCJ31BR73A472KXJ1-00B.pdf

Multilayer Ceramic Capacitors - Performance Characteristics

https://www.cde.com/resources/catalogs/ceramperf.pdf

Difference between X7R, X5R, X8R, Z5U,Y5V, X7S, C0G Capacitor dielectricsDifference between X7R, X5R, X8R, Z5U,Y5V, X7S, C0G Capacitor dielectrics - Embedded World

Ceramic capacitors are broadly categorized into 4 classes based on the dielectrics used in them,

Class 3and Class 4capacitors are not widely used and hence have not been standardized.


Class 1 capacitors have following characteristics,

  • Their capacitance varies linearly with temperature
  • Their capacitance does notdepend on the applied voltage
  • They do not suffer significant aging process due to para electric materials used in manufacturing
  • Have significantly low electrical losses compared to Class 2capacitors
  • Due to the above properties they are used in applications likeresonant circuits, PLL and Oscillators.

They use a 3 digit notation to indicate the dielectric used in them according to EIA RS-198 standard

Look at the below table, (Source : Wikipedia)

 

Class 2 capacitors are specifications mentioned above are for operation within fixed temperature range of +25 degrees centigrade to +85 degrees centigrade. 


Class 2 capacitors have following characteristics

  •  Their capacitance varies non linearly with temperature
  •  Their capacitance highly depends on the applied voltage
  •  They suffer significant aging process due to ferro electric materials used in manufacturing
  •  Have significantly high electrical losses compared to Class 1 capacitors
  •  Due to high Permittivity they have high volumetric efficiency
  •  Due to high Permittivity large capacitance values can be achieved in small device casings like 0201, 0402, 0603 
  •  Due to the above properties they are used in applications like bypassing, coupling, decoupling.

They use a 3 digit notation to indicate the dielectric used in them according to EIA RS-198 standard

Refer the table below, (Source : Wikipedia)

So according to the above table,

When manufacturer says that this is a  capacitor, it means that the capacitor can operate from – degrees centigrade to +degrees centigrade temperature and the capacitance of the capacitor will not vary more or less than  from its nominal value specified.

Similarly, When manufacturer says that this is a capacitor, it means that the capacitor can operate from -30 degrees centigrade to +85 degrees centigrade temperature and the capacitance of the capacitor will not increase more than  and not decrease below  from its nominal value.

 

Most commonly used capacitor dielectrics are .


Although Class 1 capacitors have more advantages than Class 2 capacitors, I encounter more X7R and X5R capacitors on day to day basis than C0G capacitors. 

Watch this video too :

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