Ceramic Capacitor Rating

The first two numbers describe the value of the capacitor and the third number is the number of zeros in the multiplier.

Ceramic capacitor rating.

A variety of schemes may be used. A capacitor with a 50v rating or higher would be used. Smaller ceramic capacitors can have a nominal value as low as one pico farad 1pf while larger electrolytic s can have a nominal capacitance value of up to one farad 1f. If the capacitor experiences a voltage between its terminals higher than its rated voltage the dielectric may break down and electrons will flow between the thin metal layers inside of the capacitor creating a short.

Image courtesy of digi key. 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. Ceramic capacitors are generally smaller than types like electrolytic capacitors and therefore the markings need to be more concise. Often the value may be given in picofarads.

Multi layer ceramic capacitor mlcc mlccs are manufactured by accurately mixing finely ground granules of paraelectric and ferroelectric materials and alternatively layering the mix with metal contacts. Method of finding the value meaning of codes of capacitor. All capacitors have a tolerance rating that can range from 20 to as high as 80 for aluminium electrolytic s affecting its actual or real value. In another 50 volts may be needed.

Click here for resistor colour code and smd resistor code ceramic disc capacitors have two to three digits code printed on them. 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. They can actually fit an x7r decoupling cap in this tiny form factor. 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.

When the first two numbers are multiplied with the multiplier the. A capacitor with a 12v rating or higher would be used in this case. Sometimes figures such as 10n will be seen and this indicates a 10nf capacitor. Most ceramic capacitors have a fairly high voltage rating.