Understanding the basics of them helps you to choose the capacitor for your application. Some capacitors will have their capacitance and voltage ratings printed directly on the. An electronic color code is used to indicate the values or ratings of electronic components, usually for resistors, but also for capacitors, inductors, diodes and others. Tolerance color other than gold and silver for capacitors only. Even a value that you are accustomed to thinking of in microfarads, such as a. 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. 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. But it is difficult to identify the values in the case of old capacitors. This shows how some common capacitor values are represented using this notation. The capacitor on the left is of a ceramic disc type capacitor that has the code 473j printed onto its body. Paper and electrolytic capacitors are usually expressed in terms of uf microfarads.
How to find the value of burnt resistor by four handy methods difference between a battery and a capacitor. Capacitor color codes modern capacitors use the numerical markings we outlined above, but older capacitors employed a now obsolete color coding system. The dielectric is made from a thin filmlike sheet of insulating material, and the plates are made from filmlike sheets of metal foil. Basically, a capacitor is formed from two conducting plates separated by a thin insulating layer. A number code is often used on small capacitors where printing is difficult. Let us see an example of ceramic or disc capacitor for calculating the color code on it.
There are two types of flat capacitors and one cylindrical that use color codes. 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. A further surface mount resistor code scheme or smd resistor coding scheme has started to be used, and it is aimed at 1% tolerance smd resistors, i. A separate code, the 25pair color code, is used to identify wires in some telecommunications cables. These calculators can convert the 3digit value codes and alphabetical tolerance codes found on some capacitors into the corresponding value and viceversa. 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.
Resistor and capacitor color codes complete with mica. Silver mica capacitors are thicker, bulge at the ends where the leads are attached, and are shiny and sometimes colorful red, blue, yellow, and green are common colors for silver mica capacitors. In a conventional capacitor, the electric energy is stored statically by charge separation, typically electrons, in an electric field between two electrode plates. Capacitor colour codes and colour code descriptions. Complete guide to electric guitar capacitors electric herald. First of all, capacitors are coded in pico farads pronounced peko farads. Some capacitors will have their capacitance and voltage ratings printed directly on the component, but some may have a three or four digit code. Ceramic smd capacitors for military and high reliability applications series capacitance voltage sizes dielectric process hirel series 1 pf to 6. The various parameters of the capacitors such as their voltage and tolerance along with their values is represented by different types of markings and codes. How to read capacitor codes large capacitor have the value printed plainly on them, such as 10. The first dot on a mica capacitor is white to indicate eia six dot code. First, most will have three numbers, but sometimes there are just two numbers. Remember that line and add black 0, brown 1, grey 8 or white 9 as above to complete the sequence. 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.
Sometimes a code is used instead, which normally consists of a letter and 3 digits. As higher tolerance resistors are used, further figures are needed. Handy formulae for series and parallel capacitors, stored charge, and stored energy. This html book is designed to provide an easy means of device identification. See below if you suspect your capacitor uses a code for voltage a single. Capacitor code guide value type code value type code 1. The letter indicates the working voltage and the 3 digits 2 digits and multiplier give the capacitance in pf.
Short forms for micro farad include uf, mfd, mfd, mf and uf. Smd electrolytic capacitors are often marked with their capacitance and working voltage, e. If there is room on the body of the capacitor, the manufacturer usually lists voltage as a number followed by a v, vdc, vdcw, or wv for working voltage. This is the maximum voltage the capacitor is designed to handle. Understanding capacitor codes and markings homemade.
In either case, read the capacitance in picofarads from. Capacitor identification codes and ceramic capacitor code. To ensure that the capacitor is discharged to a voltage capacitor values capacitor is required, is possible but it decreases the surge protection level. First, most will have three numbers, but sometimes there are. There are different types of capacitors that are manufactured in many forms, styles, and materials. Polyester film greencaps are coated in a thermosetting epoxy resin to enhance mechanical strength and humidity resistance. If water is leaking into the room, it may indicate one of the following.
May 9, 2019 in this section you know ceramic capacitor code value, how to read capacitor value of ceramic capacitor. Standard capacitor color codes voltage across capacitor. Before going to each of them, let us understand the basic. Capacitor voltage code and capacitor tolerance code. The amount of charge stored per unit voltage is essentially a function of the size of the plates, the plate materials properties, the properties of the dielectric material placed between the plates, and the separation distance i. Capacitor chart, capacitor code guide, mica capacitor values. If there are only two digits listed, the number is simply the capacitance in pf. Ignore any letters they just indicate tolerance and voltage rating. Solid tantalum capacitors frequently asked questions faqs. Select the number of bands, then their colors to determine the value and tolerance of the resistors or view all resistors digikey has to offer. Some of these markings and codes include capacitor polarity marking. Both parts of each calculator work separately you do not have to enter both value code and tolerance code. However, solderability and covertape peel strength may be.
In general, four or more than four colors or dots are used to mark capacitors. Molded mica capacitor color code bills antique radios. Colour code carbon resistors for resistors bc d tol and c10pf c capacitors note. Every value shown in microfarads, nanofarads, picofarads, european and eiamil codes, and colour codes. Capacitor uf nf pf conversion chart when reading schematics, repairing radios and buying capacitors, you often must convert between uf, nf and pf. While it is normal for the system to generate condensate water in coolingmode, it is designed to drain this water via a condensate drain system to a safe location. Then the 4 1 st digit, the 7 2 nd digit, the 3 is the multiplier in picofarads, pf and the letter j is the tolerance and this translates to.
Heres a clear explanation of what these codes mean and how to read them. Capacitor colour codes page 2 capacitor voltage colour code table band colour voltage rating v type j type k type l type m type n black 4 100 10 10 brown 6 200 100 1. How to read capacitor code value ceramic capacitor code. It lists well over 3,400 device codes in alphabetical order, together with type numbers, device characteristics or equivalents and pinout information. Different codes are used for wire leads on devices such as transformers or in building wiring. These colour codes are used from many years for nonpolarized capacitors like disc and ceramic capacitors. Capacitor chart tantalum capacitor color codes charts color color 1st figure 2nd figure multiplier voltage black 0 1 10 brown 1 1 10 red 2 2 100 orange 3 3 parallel capacitance math.
327 536 709 710 660 1225 9 146 387 502 1452 566 467 1271 939 808 83 1465 1469 496 480 354 1234 490 998 492 500 490 386 215 1032 453 334 197 1111 1498 1002 493 366 1256 246 1494 1134 424 172 43