CAPACITOR CODE CHART .011 TO .047 SERIES
Part of a larger tutorial series on capacitors. Tantalum: Are smaller, ranging up to about 1,000 F. You find these two common types of electrolytic capacitors: Aluminum: Can be quite large, with as much as a tenth of a farad or more (100,000 F). The first two numbers are the value, the third number is the multiplier. If you apply voltage in the wrong direction, the capacitor may be damaged and might even explode.
Most capacitor numerical markings are 3 digit and express the value in pF (pico Farad = 10^-12 Farad) with the last digit being a power of 10 multiplier.Ģ23 = 22,000 pF = 22 nF = 0.022 uF = 0.000 000 022 F There should be a code on it, in the lower left corner of the writing on the cap. You can generally substitute one of these for a single cap in a given circuit. However, you might occasionally find an unusual value such as 0.15 or 0.27. Capacitor values are usually standardized-.10.22. Typically this sort of capacitor is 50 Volt rated but this is not certain. mF microFarad (not milliFarad as youd expect)1 F 1 000 000 000 000 pF. There are several different colour/voltage systems. The green dot is quite likely to be a voltage rating, but alas I don't know what system it uses. However page 70 of this superb Vishay ceramic single layer capacitors document suggests you might expect to meet any of eg Note that the use of xNx here is (probably) unqiue to capacitors in the nF range - I do not recall seeing eg xPx or xUx markings ever. The brown capacitors have values in picoFaradsĤ7 = 47 picoFarad = 47 pF = 0.000 000 000 047 Farad !įor the yellow and green capacitors with markings of the form