Picofarads is used to denote the capacitor s value. Capacitor code guide value type code value type code 1. If we consider a four color band capacitor, then the first and second colors marked on the capacitor represents the value of the capacitor and the third color band represents the decimal multiplier in. This chart allows one to convert between picofarads, nanofarads, and microfarads. You have the voltage rating correct, but you need a capacitor of the same capacitance to be sure of getting the same performance out of your speaker system. This calculator is used to find the value of a capacitor from the 3 digit code printed on its side.
Every value shown in microfarads, nanofarads, picofarads, european and eiamil codes, and colour codes. How to read capacitor codes large capacitor have the value printed plainly on them, such as 10. Capacitors have a variety of marking codes on them. If the capacitor code consist only 1 or 2 digits, it is simply their capacitance value in picofarads pf. Handy formulae for series and parallel capacitors, stored charge, and stored energy. This chart is easily accessible and can be incorporated into any of your personal uses. Three digit codes are often accompanied by an additional tolerance letter code as given below. The example capacitor has a 3 digit number printed on it 103. It bears many similarities to the numeric code system adopted for some surface mount resistors. Larger capacitors the cylindrical aluminum electrolyte type or the doublelayer type. A three letter code consists of the two value digits and a multiplier much like the resistor colour codes in the resistors section. Here is my complete conversion chart for all standard capacitor values. How to interpret capacitor markings zach wendt and jeremy cook posted on january 24. May 9, 2019 in this section you know ceramic capacitor code value, how to read capacitor value of ceramic capacitor.
For codes s, x, and z, the actual capacitance may be as much as 20% below the stated value or as much as 50%, 40%, or 80% over the stated value. If you are new to capacitor codes, then the best way to start is with a chart, because that way, you can see the arrangement of the code. Capacitor conversion chart uf mfd nf pf mmfd uf mfd nf pf mmfd uf mfd 000 nf 000000 pf mmfd 6. Both parts of each calculator work separately you do not have to enter both value code and tolerance code. Understanding capacitor codes and markings homemade. How to read capacitor code value ceramic capacitor code.
How to read capacitor codes illinois institute of technology. In general, four or more than four colors or dots are used to mark capacitors. Monolithic capacitor these nonpolar capacitors have equal length leads that can be installed in either direction and come in many colors. Hi, im looking to establish a table for acceptable esr values for caps, i know that for each specific cap you can look at the data sheet and get the esr and the tan d d to know if your cap is with spec, but when diagnosing caps in a malfunctioning circuit with a lot of caps you will need a ballpark numbers for esr because desoldering all those caps would be a problem. Capacitor color codes how to read capacitor value codes. Short forms for micro farad include uf, mfd, mfd, mf and uf. The first two digits of a capacitor value reference give you a number that you then divide or multiply by factors of ten according to the value of the third digit. Capacitor identification codes and ceramic capacitor code. The smallest capacitors made from ceramic, film, or tantalum use units of picofarads pf, equal to 10 12 farads. This is a simple online calculator for color band resistor marking, inductor color band marking, ceramic or tantalum capacitor 3 digit marking and smd resistor 3digit, 4digit, 10%, 5%, 2% and eia96 e96 1% tolerance code marking. This guide does not cover in detail, application of nonpolar aluminum electrolytic capacitors such as ac motorstart capacitors.
Capacitor code calculator these calculators can convert the 3digit value codes and alphabetical tolerance codes found on some capacitors into the corresponding value and viceversa. Method of finding the value meaning of codes of capacitor. Capacitors are available in a huge range of package styles, voltage and current handling capacities, dielectric types, quality factors, and many other parameters. In case, small values with decimal points needs to be represented, then the alphabetical letter r is used such as. Physically small capacitors are especially difficult to read, due to the limited space available for printing. Click here for resistor colour code and smd resistor code. If youre trying to specify capacitors for a new design, a datasheet is. The first two digits, in this case the 10 give us the first part of the value. Download the pdf here electrolytic capacitor these polaritysensitive capacitors are the easiest to decipher because their value and maximum voltage ratings are listed directly on the metal component can. Early life failures are initially caused by deficiencies in the capacitor manufacturing process, such as burred or rough foil edges, thin regions in separator paper, deficiencies in oxide films, etc. The color of the ceramic body material can be sometimes helpful. If you come across these capacitors, try looking up a capacitor color code guide like the one here to decipher the codes for capacitance, breakdown voltage, and other values. For example if a ceramic capacitor has a code 5 and other has 47, their respective capacitance values are 5 pf and 47 pf. Capacitor color code capacitor color code not ceramic, capacitor values standard pf, capacitor values.
In this article you will learn the most standard capacitor values, the prefixes used and how to calculate a capacitor value. Large capacitor have the value printed plainly on them, such as 10. The first two numbers describe the value of the capacitor and the third number is the number of zeros in the multiplier. First, most will have three numbers, but sometimes there are just two numbers. Capacitor voltage code and capacitor tolerance code. Unlike resistors, capacitors use a wide variety of codes to describe their characteristics. Every capacitor is rated with a certain tolerance around its nominal value. How to identify an smd ceramic capacitor, and how do i.
Today most capacitors are marked with alphanumeric codes but older capacitors may be seen that have colour codes. It is a bit confusing, but its easy to learn what it means. Ceramic disc capacitors like the one on the left are printed with a code. The basics of capacitor values build electronic circuits. How to read capacitor code value capacitors, coding. Now look up the code in the alphanumeric listing which forms the main part of this book by clicking on the first character shown in the left menu. The top 683 marking indicates the capacitance value, which is 68,000 picofarads pf. Ceramic disc capacitors have two to three digits code printed on them. These markings and codes indicate various properties for the capacitors and it is essential to understand them in order to select the required type. This code indicates what the capacitance of the capacitor is. Mkp capacitors for motor applications general information electrical specifications and definitions dielectric.
Databank, component codes, electronic symbols, electronic. For codes p and w, the manufacturer promises that the capacitance will be no less than the stated value but may be as much as 100% or 200% over the stated value. The 3 digit capacitor code 153 stands for 15 nf, in words. Click here for resistor colour code and smd resistor code ceramic disc capacitors have two to three digits code printed on them. First, most will have three numbers, but sometimes there are. Capacitor code information this table is designed to provide the value of alphanumeric coded ceramic, mylar and mica capacitors in general. If the rightmost digit is zero, then the code may be a value in pf instead of the 3digit code. Capacitor chart, capacitor code guide, mica capacitor values. Capacitor colour codes and colour code descriptions. The first two digits are the two most significant digits of the value, and the third digit is the exponent on the 10. To identify a particular smd device, first identify the package style and note the id code printed on the device. Displayed capacitor chart with tantalum capacitor color codes, capacitor code guide, mica capacitor values etc. When reading schematics, repairing radios and buying capacitors, you often must convert between uf, nf and pf. It is even worse when you have to go around the shops looking for the value you need, because some shops might list it in pf whilst.
Standard capacitor values conversion chart pf nf uf. Understanding ceramic disc capacitor values kitronik. Smaller capacitors may only have room for a few figures printed as a code for the value. Paper and electrolytic capacitors are usually expressed in terms of uf microfarads. They come in many sizes, shapes, values and ratings. Enter the code in the box below and then hit the button to calculate the value of the capacitor. Modern capacitors use the numerical markings we outlined above, but older capacitors employed a now obsolete color coding system. View, download or print capacitor code chart pdf completely free. The chart illustrates how to determine their value using the threenumber and letter code found on most monolithic capacitors. A ceramic disc capacitor does not have a polarity and connects in any direction on the printed circuit board. Decade value tables resistor decade value tables, pdf file. It is also adopted by various other standards including din 40825 1973, bs 1852 1974, is 8186 1976 and en 60062 1993. The notation to state a capacitors value in a circuit diagram varies.