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The colour code chart is given below: Color Here is the different colors used on the capacitor, each colour has its digit, multiplier tolerance and temperature co-efficient. The dielectric is varied for different ceramics and hence the temperature and voltage rating is also different. These are available from pico farads to micro farad range. This type of capacitors are suitable cost saving and space saving purpose. This capacitors have low ESR values when compared with other group of capacitors. The color code for this capacitor is written on the body as capacitance value and the voltage. This type of electrolytic capacitor are made of aluminum used for power supply and switching DC circuits. This capacitor has 224 written on it which gives the capacitance value of 22 x 10 4 = 220000pF or 220nF. So we should take 1 st and 2 nd digit and multiply with a 3 rd digit which gives the capacitance value of the particular capacitor. In this a 3 digit code 103 written on it. In disc capacitor or ceramic capacitor is shown below, there is a three digit number written on it. They are mostly used in electronic circuits due to their low inductance and resistance and better frequency response. The values for ceramic disc capacitors varies from 1 nano farad to 1000 micro farad. They are also known as multi layer chip capacitor (MLCC) or disc capacitor. This capacitor uses ceramic as dielectric material (insulator). LCR meter can be used to measure inductance, capacitance and resistance. For this type of capacitors, we have to measure using an LCR meter. Most of time leaded capacitor have + or -, while chip or ceramic capacitors having no marking. The sign or marking (+ or -) tells the polarity of capacitor is positive or negative. As the tolerance value increases the precision or rate of change of capacitance increases. The best tolerance is the lowest percentage one.
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The tolerance value of capacitor ranges from ☐.1 pF to 10%. Tolerance of a capacitor shows the how much percentage the capacitance varies with respect to temperature. This feature may help you not to burn up your circuit. The voltage rating of capacitor tells the ability of the capacitor to withstand high or low voltages when applied across its terminals. The DC voltage rating of a capacitor plays a major role to determine how strong the capacitor insulation is. But most of the capacitors have their value and their voltage printed on their body. There are different types of capacitor and each has its specified capacitance value, voltage rating, temperature range, tolerance and life time. It represents the value or colour code of capacitor.
#Capacitor code chart pdf how to
To know the capacitance values of the capacitors we need to follow this steps: How to Read Capacitor Values?Įvery capacitor has a special marking printed on its body. The capacitance can range from 1pico factor to 1 farad. Every capacitor has colors or alphanumeric characters on the body which indicates the nominal capacitance value of the capacitor. For identifying the capacitor values and tolerances international colour coding scheme ( electronic colour coding) was introduced. To use a capacitor in your electronic projects, understanding capacitor colour code is required.