Instead letters such as p (pico) or n (nano) are used in place of the decimal point to identify its position and the weight of the number.Also, sometimes capacitors are marked with the capital letter K to signify a value of one thousand pico-Farads, so for example, a capacitor with the markings of 100K would be 100 x 1000pF or 100nF.
It consists of coloured bands (in spectral order) known commonly as the Capacitor Colour Code system and whose meanings are illustrated below. This system of colour coding is now obsolete but there are still many old capacitors around. ![]() 103 Capacitor Code Code Is UsedWhere a two number code is used the value of the capacitor only is given in picofarads, for example, 47 47 pF and 100 100pF etc. A three letter code consists of the two value digits and a multiplier much like the resistor colour codes in the resistors section. Three digit codes are often accompanied by an additional tolerance letter code as given below. 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: 47pF 1,000 (3 zeros) 47,000 pF, 47nF or 0.047uF the J indicates a tolerance of - 5. They are sometimes called safely capacitors and commonly come in the colors of yellow, orange, or grey. I have been fortunate enough to work with a variety of green technology including fuel cells. 103 Capacitor Code How To Take ThoseI will teach you how to take those letters and digits and determine the value. Looking at the image you see 4 resistors, the first being 391 the seconed 270 and the two at the bottom are the same 30R9. The formula for breaking the code down is as follows. K ohm resistor There are some resistors which have 4 digits. The formula is the same with the addition to a digit. K ohm resistor You may askwhy some have three diigits and some have four three digits typically means that the resistor is 5 tolerance the four digit typically means the resistor is 1 tolerance. If a letter is used to represent tolerance use the chart below. B.1 C.25 D.5 F1 G2 J5 K10 M20 Z80 Now you will notice that the last two resistor have an R in the equation. So 30R9 is a 30.9Ohm resistor. R23.23 ohm 5R6 5.6 ohm 45R3 45.3 ohm Of course you can read the values with a meter, but whats the fun in that I hope you all learned something from this little write up. 103 Capacitor Code Download Participated InAdd Tip Ask Question Comment Download Participated in the Electronics Tips and Tricks View Contest. ![]() You should be able to find what you need here- 0 Shawners06 ColorBomb. As a newbie to SMD I have found myself a little daunted by this miniature hardware, but I am now more confident of installing the correct resistor when constructing my projects. Lance - I now have a (cheap) bulk lot of mixed SMD on the way to practice my soldering skills - 0 David InnesA. I will recommend this explanation to everyone who is searching for a good basic understanding. Dave. 0 ibrahimazam11. It has to do with a three number scheme that allows 1 values. ![]() Terms of Service Privacy Statement Privacy settings Legal Notices Trademarks.
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