Ceramic Disc Capacitor Symbol

I have always been unaware of the markings on a disc ceramic capacitor such as j m and other symbols.

Ceramic disc capacitor symbol.

To gain higher capacitances these devices can be made from multiple layers. The early style of the ceramic disc capacitor could be more cheaply produced than the common ceramic tube capacitors in the 1950s and 1970s. Many larger capacitors like electrolytic capacitors disc ceramics and many film capacitors are large enough to have their markings printed on the case. It is consists of two number disc electrodes and placed in parallel.

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. The letter j signifies the tolerance of 5. Ceramic capacitor polarity and symbol. The first two digits represent the value of the capacitor and the third digit represents the number of zeros to be added.

On a larger capacitors there is sufficient space to mark the value the tolerance working voltage and often other data such as the ripple voltage. It has small value capacitance and due to the high dielectric strength of the medium the voltage rating goes up to 1kv. An american company in the midst of the apollo program launched in 1961 pioneered the stacking of multiple discs to create a monolithic block. When the first two numbers are multiplied with the multiplier the.

Ceramic capacitors are also called disc capacitors a code of 3 digit is generally printed on the body of this type of capacitors to tell their capacitance in pico farads. When the ceramic capacitor are layered multiple times it becomes mlcc. Taking a look at this site today has enlightened me to not only letters on the caps but voltage codes as well. The first two numbers describe the value of the capacitor and the third number is the number of zeros in the multiplier.

Method of finding the value meaning of codes of capacitor. The first ceramic capacitor was disc shaped and now it is available in different shapes and sizes. The first two significant digits represent the first two digits of the actual value which is 47. Ceramic disc capacitor code label will normally consist of three numbers followed by a letter.

The third digit is the multiplier which is 1000. 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. They are very easy to decode to find the value. Depending on the shapes and sizes they are used as feed through capacitors electro magnetic interference supressers and even as power capacitors in transmittors.