Ceramic Disc Capacitor Identification

The working voltage for a capacitor is very important and therefore this parameter is often marked on capacitors and particularly in situations where there is space for alphanumeric coding.

Ceramic disc capacitor identification.

Ceramic capacitors come in various shapes and styles. 47pf 1 000 3 zero s 47 000 pf 47nf or 0 047uf the j indicates a tolerance of 5. There are several tolerance marking systems used. Ceramic disc capacitor code label will normally consist of three numbers followed by a letter.

The first two significant digits represent the first two digits of the actual value which is 47. The first is used with small ceramic capacitors and appears as a single letter. Then by just using numbers and letters as codes. A lacquer or ceramic coating protects the capacitor against moisture and other ambient influences.

The following prefixes are the modern convention. Multilayer ceramic chip capacitor mlcc rectangular block for surface mounting. To express those small values succinctly we use the metric system. The third digit is the multiplier which is 1000.

The capacitor on the left is of a ceramic disc type capacitor that has the code 473j printed onto its body. The two most common types are multi layer ceramic capacitors and ceramic disc capacitors. They are very easy to decode to find the value. Ceramic capacitor definition a ceramic capacitor is a capacitor which uses a ceramic material as the dielectric.

In addition to the capacitance value and possibly the working voltage or breakdown voltage the capacitor may be marked by its tolerance. Ceramic disc capacitors have two to three digits code printed on them. When the first two numbers are multiplied with the multiplier the resulting value is the value of the capacitor in picofarads. Two of the most common are shown here.

Capacitor values are usually tiny often in the millionths or billionths of a farad. The above image shows a mylar film capacitor. Then the 4 1 st digit the 7 2 nd digit the 3 is the multiplier in pico farads pf and the letter j is the tolerance and this translates to. To get this value you multiply the leading digits 68 in this case by 10 raised to the power of the last digit 3 and the result is the capacitance in picofarads in this case we get 68x10 3 pf.

The top 683 marking indicates the capacitance value which is 68 000 picofarads pf. Some of the most common are. Ceramic disc capacitor single layer disc resin coated with through hole leads. Ceramic capacitors have a great frequency response due to low parasitic effects such as resistance or inductance.

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. The first two numbers describe the value of the capacitor and the third number is the number of zeros in the multiplier. The letter j signifies the tolerance of 5. Capacitor identification capacitor marking review.

Capacitor working voltage codes.