Ceramic Cap Voltage Rating

Typically the markings on a capacitor may give the figures like 22 and 6v.

Ceramic cap voltage rating.

If there is room on the body of the capacitor the manufacturer usually lists voltage as a number followed by a v vdc vdcw or wv for working voltage. 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. Multi layer ceramic capacitor mlcc. Codes of polyester film and metallized film capacitor.

Ceramic disc capacitors are usually through hole components and are falling out of favor due to their size. Also the specified dc working voltage is valid within a certain temperature range normally 30 c to 70 c. 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. It could even be 250v.

Check the voltage rating. They can actually fit an x7r decoupling cap in this tiny. This indicates a 22µf capacitor with a maximum voltage of 6v. For example if you go onto digi key and search for a 0 1 µf c0g cap the smallest in stock part is a 1206.

Meaning they hold a certain size charge 1µf 100µf 1000µf etc at a certain. The main thing you need to know about capacitors is that they store x charge at x voltage. Value and not the maximum or peak value which is 1 414 times greater. A variety of schemes may be used.

2a is a 100vdc rating according to the eia electronic industries alliance standard. A ceramic capacitor is a fixed value capacitor where the ceramic material acts as the dielectric it is constructed of two or more alternating layers of ceramic and a metal layer acting as the electrodes the composition of the ceramic material defines the electrical behavior and therefore applications. In contrast you can find a 0 1 µf x7r cap in the 0306 package and with a voltage rating 10 v high enough for 3 3 v or even 5 v circuitry. Remember that capacitors are storage devices.

Mlccs are used instead if capacitance values allow. Dc and ac voltage values are usually not the same for a capacitor as the ac voltage value refers to the r m s. This is the maximum voltage the capacitor is designed to handle. The 104 capacitance indicator has no bearing whatsoe.

A ceramic capacitor marked 104 has a value plus as much as 80 to 20 tolerance of 100000pf or 100nf or 0 1uf. The voltage rating could be 50v it could be 100v.