Ceramic Capacitor Temperature Ratings

Nominal capacitance c the nominal value of the capacitance c of a capacitor is the most important of all capacitor.

Ceramic capacitor temperature ratings.

Mlccs are used instead if capacitance values allow. These capacitor characteristics can always be found in the data sheets that the capacitor manufacturer provides to us so here are just a few of the more important ones. The first character indicates the lowest temperature that the capacitor can handle. 5 as in x5r corresponds to 85 c and 7 as in x7r corresponds to 125 c.

The second character indicates the maximum temperature. All ratings are from 25 to 85 c. The theoretical range is from 45 c to 200 c. Ceramic names temperature coefficients α α tolerances and letter codes for α.

Ceramic disc capacitors are usually through hole components and are falling out of favor due to their size. Multi layer ceramic capacitor mlcc. This tutorial explains how ceramic capacitor type designations such as x7r and y5v imply nothing about voltage coefficients. Ceramic capacitors which are usually tiny pancakes with two pins typically list the tolerance value as one letter immediately after the three digit capacitance value.

Engineers must check the data to know really know how a specific capacitor will perform under voltage. The reality of modern small form factor ceramic capacitors is a good reminder to always read the data sheet. The capacitor as with any other electronic component comes defined by a series of characteristics. A ceramic capacitor is a fixed value capacitor where the ceramic material acts as the dielectric.

The third letter gives the maximum tolerance from that in ppm k.