There is a similarity between this marking system and the resistors color codes system which can be observed here, except for the color which is used in the coding system. However, when the value of the capacitance is of a decimal value problems arise with the marking of the decimal point as it could easily not be noticed resulting in a. Both parts of each calculator work separately you do not have to enter both value code and tolerance code. It usually consists of three numbers, which indicates the value, and a letter, which indicates the tolerance.
How to read capacitor code value ceramic capacitor code chart. It is also adopted by various other standards including din 40825 1973, bs 1852 1974, is 8186 1976 and en 60062 1993. Tantalum surface mount capacitors standard tantalum t491 industrial grade mno. Unfortunately, each device code is not necessarily unique. Smaller capacitors may only have room for a few figures printed as a code for the value. All you need to decode the markings on many types of capacitors. The first letter if present is a manufacturer code i. Understanding capacitor codes and markings homemade circuit. Solid tantalum capacitors frequently asked questions faqs general what is vishays selection of tantalum capacitors with solid mno2 electrolyte. The smd components marking codes database index page. Uptodate marking of epcos ac film capacitor series b3233 and. Having trouble determining the value of that capacitor on your bench. Capacitor chart, capacitor code guide, mica capacitor values. Film capacitors marking and ordering code system tdk electronics.
This guide does not cover in detail, application of nonpolar aluminum electrolytic capacitors such as ac motorstart capacitors. The construction of an aluminum electrolytic capacitor is illustrated in fig. K capacitance tolerance a failure rate anot applicable 1 termination 1 pdag t plated ni and sn 1a packaging marking 1a 7 reel unmarked 3a reel unmarked 10 pf 100 9a bulkunmarked 100 pf 101 1,000 pf 102 22,000 pf 223. First, most will have three numbers, but sometimes there are. Marking types the capacitors may have either an inkjet marking or a laser marking. Therefore, epcos capacitors which have been manufactured after the acquisition carry the kemet id symbol, but their marking system remains different. So this is how a capacitor valuecode calculator calculates the ceramic capacitor value from the capacitor code, or vice versa. Since the oxide film has rectifying properties, a capacitor has polarity.
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. In addition to the capacitance value and possibly the working voltage or breakdown voltage the capacitor may be marked by its tolerance. General description of aluminum electrolytic capacitors. For example, if the marking is 101p, the actual capacitance is no less than 100 pf but may be as much as 200 pf. Direct value marking some manufacturers mark the capacitance value directly on the case, along with other information. How to interpret capacitor markings zach wendt and jeremy cook posted on january 24, 2018.
On several capacitors marking or code indicates the temperature coefficient of the capacitor. Capacitor outline drawings kemet ordering information c 0805 z 101 k 5 g a l marking capacitors shall be legibly laser marked in contrasting color with the kemet trademark and 2digit capacitance symbol. The more a capacitor is charged, the larger its voltage drop. They use instead a marking code typically composed of a combination of 2 or 3 letters or digits. 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. Ceramic disc capacitors have two to three digits code printed on them. The capacitance value will be calculated as follows. All these codes are standardized by eia electronics industries alliance, these codes are typically used for ceramic and film type capacitors. The first is used with small ceramic capacitors, and appears as a single letter. Modern capacitors use the numerical markings we outlined above, but older capacitors employed a now obsolete color coding system.
Moreover, because the laser marking process reduces the amount of chemicals used, it is an environmentally friendly marking solution. What is the shelf life of this part in the original packaging. Surface mount multilayer ceramic chip capacitors smd mlccs. Physically small capacitors are especially difficult to read, due to the limited space available for printing. Understanding motor nameplate information nema vs iec. It is mostly used by the europeans and sometimes by the chinese. Looking at our capacitor we will see its marked 474j, this should be read as follows, 47 times the value that can be found in table 1 corresponding to the 3rd number, in this case 0.
Ordering code substitute product date of withdrawal deadline last orders last shipments b41121 20222 20930 20140331 for further information please contact your nearest epcos sales office, which will. The first two numbers describe the value of the capacitor and the third. Labeled capacitance values below follow the pn order code single y cap. These capacitor colour codes are less common than in previous years, but some may still be seen. Tables usually provide a means to decode the numbers. A capacitor marking is a code, which indicates the value of the component. The top 683 marking indicates the capacitance value, which is 68,000 picofarads pf. How to use the smd codebook to identify a particular smd device, first identify the package style and note the id code printed on the device. The rkm code, also referred to as letter and digit code for resistance and capacitance values and tolerances or r notation, is a notation to specify resistor and capacitor values defined in the international standard iec 60062 formerly iec 62 since 1952. Capacitor colour codes and colour code descriptions. If youre trying to specify capacitors for a new design, a datasheet is always best. Nichicon capacitor date code marking datasheet, cross reference, circuit and application notes in pdf format. These calculators can convert the 3digit value codes and alphabetical tolerance codes found on some capacitors into the corresponding value and viceversa.
To identify a particular smd device, first identify the package style and note the id code printed on the device. 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. Surface mount multilayer ceramic chip capacitors smd mlccs x7r dielectric, 6. F, meaning it has a capacitance of 100 microfarads. How to read a capaci tor how to decipher capacitor codes when working with electronics, one of the more daunting and tedious yet necessary tasks is figuring out. Most of the time the last digit tells you how many zeros to write after the first two digits, but the standard eia. Tantalum surface mount capacitors standard tantalum. How to read a capacitor how to decipher capacitor codes when working with electronics, one of the more daunting and tedious yet necessary tasks is figuring out. This means that it is necessary to know the smd capacitor codes.
So in the example the 10,000 pf capacitor can be written as a 10 nf capacitor. Every value shown in microfarads, nanofarads, picofarads, european and eiamil codes, and colour codes. The first two significant digits represent the first two digits of the actual value, which is 47. The image above is of an electrolytic capacitor marked with 100.
Moreover, because the laser marking process reduces the amount of chemicals used, it is an environmentally friendly marking. Has a very low dissipation factor and are very stable over wide variations in temperature, frequency, voltage, and time. Smd capacitor code calculate smd capacitor value chart. First, most will have three numbers, but sometimes there are just two numbers. Details of capacitor markings can be found in the technical data section. When repairing an unknown electronic board, it becomes so difficult to know what is the exact type of a given component. For a detailed analysis of specific part numbers, please visit ksim.
New codes have been unofficially added over the years however. Ceramic capacitor may have 3 or 4 numbers at its body. The main advantage of laser marking is that it cannot be removed by solvents, which ensures the reliable identification of the capacitor. Understanding motor nameplate information nema vs iec standards. A guide to understanding ceramic disc capacitor values. It lists well over 3,400 device codes in alphabetical order, together with type numbers, device characteristics or equivalents and pinout information. If the marking is 101z, the capacitance is between 80 pf and 180 pf. Ceramic disc capacitor codes are always measured in pico farads or pf.
The marking on the b3233 and b3333 series of epcos ac film capacitors manufactured in our plants in nashik and bawal, india, and gravatai, brazil, for motor run applications will be changed. Jun 18, 2019 thus, abbreviated markings are used in such cases wherein three characters are used to mark the code of the capacitor. Ordering code cover material package material safety class ce previous new marking. Handy formulae for series and parallel capacitors, stored charge, and stored energy. Pdf 17jan06 marking code capacitors eia marking code capacitance code eia j code marking marking code e3 104 capacitance value manufacture logo vishay date code vishay capacitor code marking vishay marking code.
In common with other marking codes the first two indicate the significant figures, and the third is a multiplier. In most of the rest of the world, the international electrotechnical commission iec sets the. The letter indicates the working voltage and the 3 digits 2 digits and multiplier give the capacitance in pf. There are many different types of capacitors, but typically most do not have color coding like resistors. Kemet automotive grade products meet or exceed the requirements outlined by the automotive electronics council. Capacitor values are usually tiny often in the millionths or billionths of a farad. Figure 1 shows some others examples of number, letters and color code. Smd ceramic capacitors are sometimes marked with a code, consisting of one or two letters and a digit. Table 2a electronic industries alliance eia dc voltage code table. Kemet ksim is designed to simulate behavior of components with respect to frequency, ambient temperature, and dc bias levels. Understanding ceramic disc capacitor values kitronik. Because the safety protection classes have been more clearly definedin the. Termination h nickel guarded, soldercoated sn60 l 7030 tinlead plated failure rate % hours a standard not applicable. A ceramic disc capacitor does not have a polarity and connects in any direction on the printed circuit board.
Ceramic disc capacitor code label will normally consist of three numbers followed by a letter. However, when the value of the capacitance is of a decimal value problems arise with the marking of the decimal. Table 2 color code cap mark for temperature coefficient. Size also plays a major part in determining how the capacitor is marked small components must use abbreviated coding systems, whereas larger capacitors such as. This database allows to quickly find the part number of a smd component when you have only the marking code. This is analogous to the more a membrane is stretched, the more it pushes back on the water. The capacitor marking codes vary in their format according to whether the component is a surface mount device or whether it is leaded device, as well as the capacitor dielectric. By using this capacitor value calculator, we can calculate the value of that capacitor, or vice versa.
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. Codes of polyester film and metallized film capacitor. 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. Npo type capacitors are frequently used for precision timing, filtering, frequency setting, and tuning circuits. As ceramic capacitors have less surface area because of their tiny size, their value is not written in the capacitor, instead an encoded code is written on them.
Sometimes a code is used instead, which normally consists of a letter and 3 digits. Well, now follow to the next page and pick up the data sheet you need. Marking on b3233 and b3333 series of epcos ac film capacitors. The letter after the marking often indicates the tolerance. When a capacitor can be written without needing any extra zeros to be added to. Iec 60062 marking codes for resistors and capacitors iec 60068 basic environmental testing procedures special standards for ceramic capacitors en 600 and iec 603848 fixed capacitors of ceramic dielectric, class 1 en 700 and iec 603849 fixed capacitors of ceramic dielectric, class 2 standard for special application purposes csa c22. The number tells how much zeros contains multiplied. How to read capacitor code value ceramic capacitor code. Understanding capacitor codes and markings homemade. Marking and ordering code system please read important notes page6of7 and cautions and warnings.
Grade capacitor marking these capacitors shall be stamped or laser marked with kemet s trademark, 2005 capacitor class and rated voltage date lot code ah first two digits are the significant. If a capacitor is marked with 2a474j, the capacitance is decoded as described above, the two first signs is the voltage rating and can be decoded from the table given below here. Jan 03, 2018 codes of polyester film and metallized film capacitor. This foil and paper are then wound into an element and impregnated with electrolyte. This code is similar to the color code on resistors, but uses digits instead of. B41121 the following products presented in this data sheet are being withdrawn. The number tells how much zeros contains multiplied number. Solid tantalum capacitors frequently asked questions faqs. Unlike resistors, capacitors use a wide variety of codes to describe their characteristics. Generally, the actual values of capacitance, voltage or tolerance are marked onto the body of the capacitors in the form of alphanumeric.
A three figure smt capacitor code is normally used as there is usually little space for anything more. Capacitor code calculator this page will convert capacitor codes to values or capacitor values to codes. Uptodate marking of epcos ac film capacitor series b3233. Smd capacitor code calculate smd capacitor value chart code surface mount device. Thus, abbreviated markings are used in such cases wherein three characters are used to mark the code of the capacitor. In addition, the ce marking will be added to the marking of the product as per the low voltage directive 201435eu. Charge can flow through a capacitor even though no individual electron can get from one side to the other. Small signal transistors and diodes marking codes diode type number to marking code type number marking code package 1n821 1n821 sod68 do34 1n821a 1n821a sod68 do34 1n823 1n823 sod68 do34 1n823a 1n823a sod68 do34 1n825 1n825 sod68 do34 1n825a 1n825a sod68 do34 1n827 1n827 sod68 do34 1n827a 1n827a sod68 do34 1n829 1n829. Capacitor colour codes page 1 generally, the actual values of capacitance, voltage or tolerance are marked onto the body of the capacitors in the form of alphanumeric characters. Capacitor colour codes generally, the actual values of capacitance, voltage or tolerance are marked onto the body of the capacitors in the form of alphanumeric characters. How to read capacitor codes large capacitor have the value printed plainly on them, such as 10.
1290 1133 21 1591 716 881 1060 132 1456 1318 593 1033 1494 1412 1050 501 710 1456 1426 1261 1224 1084 1090 342 713 884 686 517 1389 535 678 563 1024 999 1492 419 144 1077 1473