How do you read capacitor numbers?

What do numbers on a capacitor mean?

If you have a capacitor that has nothing other than a three-digit number printed on it, the third digit represents the number of zeros to add to the end of the first two digits. The resulting number is the capacitance in pF. For example, 101 represents 100 pF: the digits 10 followed by one additional zero.

How do I read a capacitor with a multimeter?

How do you read an electrolytic capacitor?

The first two numbers represent the value in picofarads, while the third number is the number of zeroes to be added to the first two. For example, a 4.7 μF capacitor with a voltage rating of 25 volts would bear the marking E476. This translates to 47000000 pF = 47000 nF = 47 μF.

What does 40/85 21 Mean on a capacitor?

40/85 is the operating temperature range -40 Celsius to +85 Celsius. The 21 indicates the number of days which the capacitor can withstand within specified limits if exposed to a relative humidity of 95 % and a temperature of + 40 °C.

How do you decode a capacitor?

How to Decode Capacitor Number Marking
  1. Step 1 – First Two Digits of Capacitor Number. The three digit code of the capacitor is 681J. …
  2. Step 2 – Third Digit of Capacitor Number. The third digit says how many zeros we have to add in it to get the actual capacitance value. …
  3. Step 3 – Fourth letter of Capacitor Number.

What is a 103 capacitor?

The example capacitor has a 3 digit number printed on it (103). … The third digit indicates the number of extra zeros, in this case 3 extra zeros. So the value is 10 with 3 extra zeros, or 10,000. Ceramic disc capacitor codes are always measured in pico Farads or pF.

What does 25 85 21 Mean on a capacitor?

CMRW, CMRW-S, UCW- -M and CDW lines are identified with 25/85/21, which indicates the minimum operating temperature of-25 ºC, maximum of 85 ºC and 21 severity days to humid heat. The CMLW and CDWV capacitors are identified with 25/70/21; therefore, the maximum temperature must not exceed 70 ºC.

What does 40 100 21 mean on a capacitor?

Examples include 55/100/56, 40/85/21, 40/105/21, 40/100/56, -25/70/21, etc. This code is called the Climatic Category and consists of the climatic conditions that can be present when the capacitor is in use. It does not describe any other parameters of the capacitor such as capacitance, voltage rating or package.

What value is a 101 capacitor?

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Marking Capacitance (pF) Capacitance (ìF)
101 100 pF 0.0001 ìF
221 220 pF 0.00022 ìF
471 470 pF 0.00047 ìF
102 1,000 pF 0.001 ìF
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Mar 26, 2016

What does K and J mean in capacitor?

K means that the capacitance tolerance is 10% (F=1%, J=5%, K=10%. These are most common resistance and capacitance tolerances). MF does not mean Micro Farad. Probably it stands for Metallized Film, which indicates the capacitor type/material.

What is a 224 capacitor?

For example: 224 becomes 22 + 0000 (4 zeroes) pF = 220000 pF = 220 nF = .22 uF. A capacitor that has a decimal is typically measured in uF.

What is the value of capacitor mark 152?

Capacitor Letter Codes Table
Picofarad (pF) Nanofarad (nF) Code
750 0.75 751
820 0.82 821
1000 1.0 102
1500 1.5 152

What does 104 on a capacitor mean?

104 refers to 10 x 10^4 picofarads or 100 000 picofarads. The first two digits form the base value while the third digit is a multiplier of 10 raised to the power of the third digit. A capacitor marked 104 is commonly described as 0,1 uF.

What does J mean on a capacitor?

j is the imaginary number, used in this case to sort out reactance and impedance from pure resistance. This is because the reactance of a capacitor is a leading reactance. That means that the current leads the voltage across it by 90 degrees.

What do the letters on a capacitor mean?

The letter represents the voltage rating according to the table below. The first two numbers represent the value in picofarads, while the third number is the number of zeroes to be added to the first two. For example, a 4.7 μF capacitor with a voltage rating of 25 volts would bear the marking E476.

What is a 106 capacitor?

So, for example, if the digits are ‘106’, this equals a capacitance value of 10μF. The first 2 digits are ’10’ and the multiplier factor is 1,000,000, so the value is 10,000,000pF or 10μF (10pF x 1,000,000= 10,000,000pF= 10μF).

How do you read a capacitor color coded?

Fig. 3 – An Example to Understand How to Read Capacitor Color Markings
  1. The first colour band is Brown. That means the first digit is 1.
  2. The second colour band is Red. That means the second digit is 2.
  3. The third colour band is Green. …
  4. The fourth colour band is white. …
  5. The last colour band is Yellow.