Ceramic Disc Capacitor Identification

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 disc capacitor identification.

The above image shows a mylar film capacitor. When the first two numbers are multiplied with the multiplier the resulting value is the value of the capacitor in picofarads. There are several tolerance marking systems used. Ceramic capacitor definition a ceramic capacitor is a capacitor which uses a ceramic material as the dielectric.

The third digit is the multiplier which is 1000. Let s face it a farad is a lot of capacitance. The first is used with small ceramic capacitors and appears as a single letter. In addition to the capacitance value and possibly the working voltage or breakdown voltage the capacitor may be marked by its tolerance.

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. The top 683 marking indicates the capacitance value which is 68 000 picofarads pf. The letter j signifies the tolerance of 5. Capacitor values are usually tiny often in the millionths or billionths of a farad.

Capacitor identification capacitor marking review. Multilayer ceramic chip capacitor mlcc rectangular block for surface mounting. The two most common types are multi layer ceramic capacitors and ceramic disc capacitors. 47pf 1 000 3 zero s 47 000 pf 47nf or 0 047uf the j indicates a tolerance of 5.

Ceramic disc capacitors have two to three digits code printed on them. A lacquer or ceramic coating protects the capacitor against moisture and other ambient influences. Capacitor working voltage codes. Ceramic capacitors have a great frequency response due to low parasitic effects such as resistance or inductance.

Ceramic disc capacitor code label will normally consist of three numbers followed by a letter. They are very easy to decode to find the value. The first two significant digits represent the first two digits of the actual value which is 47. 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.

Two of the most common are shown here. In many instances where the capacitor is small no voltage coding is provided and care must be taken when using a capacitor without any knowledge of its working voltage. Then by just using numbers and letters as codes. Ceramic disc capacitor single layer disc resin coated with through hole leads.

This letter represents the tolerance of the capacitor meaning how close the actual value of the capacitor can be expected to be to the indicated value of the capacitor. To express those small values succinctly we use the metric system. Ceramic capacitors come in various shapes and styles. Some of the most common are.

The following prefixes are the modern convention.