Ceramic Capacitor Typical Voltage Rating

Figure 1 graphs the data that i extracted from the murata tool for several different 4 7µf ceramic capacitors.

Ceramic capacitor typical voltage rating.

If a capacitor is marked with 2a474j the capacitance is decoded as described above the two first signs is the voltage rating and can be decoded from the table given below here. I investigated 4 7µf capacitors of various sizes and voltage ratings. A ceramic capacitor marked 104 has a value plus as much as 80 to 20 tolerance of 100000pf or 100nf or 0 1uf. Ceramic disc capacitors are usually through hole components and are falling out of favor due to their size.

The 104 capacitance indicator has no bearing whatsoe. I looked at both x5r and x7r types in package sizes from 0603 to 1812 and with voltage ratings from 6 3v dc to 25v dc. Ceramic disc capacitors have a capacitance value of about10pf to 100μf with a wide variety of voltage ratings between 16v to 15 kv and more. Ceramic disc capacitors have a capacitance value of 10pf to 100μf with a wide variety of voltage ratings between 16 volts to 15 kv and more.

Ceramic disc capacitors are made by coating a ceramic disc with silver contacts on both sides as shown above illustrates. It could even be 250v. Codes of polyester film and metallized film capacitor. 2a is a 100vdc rating according to the eia electronic industries alliance standard.

Mlccs are used instead if capacitance values allow. The typical style for ceramic capacitors beneath the disc at that time called condensers in radio applications at the time after the war from the 1950s through the 1970s was a ceramic tube covered with tin or silver on both the inside and outside surface. The voltage rating could be 50v it could be 100v.