# What do the letters on capacitors mean?

## What do the letters on capacitors mean?

Many capacitor manufacturers use a shorthand notation to indicate capacitance on small caps. The resulting number is the capacitance in pF. For example, 101 represents 100 pF: the digits 10 followed by one additional zero. If there are only two digits listed, the number is simply the capacitance in pF.

### What do the numbers on a ceramic capacitor mean?

Ceramic capacitors usually uses 3 digits like 102, 103, 101 for indicating their values and the values are in term of Pico farad. If a ceramic capacitor has three digits – ABC, then the value would be AB*10^C Pico Farad. If ABC is 104 then the digit 104 means 10*104pF = 100000pF = 100nF = 0.1uF.

What are the numbers on capacitors?

If there are only two digits listed, the number is simply the capacitance in pF….In This Article.

Marking Capacitance (pF) Capacitance (ìF)
103 10,000 pF 0.01 ìF
223 22,000 pF 0.022 ìF
473 47,000 pF 0.047 ìF
104 100,000 pF 0.1 ìF

What do the letters and numbers 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 side of capacitor is positive?

Electrolytic capacitors have a positive and negative side. To tell which side is which, look for a large stripe or a minus sign (or both) on one side of the capacitor. The lead closest to that stripe or minus sign is the negative lead, and the other lead (which is unlabeled) is the positive lead.

### How do you read a ceramic capacitor marking?

The first two digits, in this case the 10 give us the first part of the value. 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 are the different markings and codes for capacitors?

Some of these markings and codes include capacitor polarity marking; capacity colour code; and ceramic capacitor code respectively. There are various different ways in which the marking is done on the capacitors. The markings’ format is dependent upon what type of capacitor is given.

What is the tolerance capacitor marking code for an EIA capacitor?

EIA Tolerance Capacitor Marking Code Letter code Tolerance Z +80%, -20% – this is used with electroly M ±20% K ±10%

## What does the polarity marking on an electrolytic capacitor indicate?

Marking on an electrolytic capacitor – stripe indicates negative connection In this case the marking stripe also has a negative sign on it to reinforce the message. If the capacitor is an axial version having leads at both ends of the package, the polarity marking stripe may be accompanied by an arrow that points to the negative lead.

### What are the markings on a leaded tantalum capacitor?

Markings of leaded tantalum capacitor: The unit, “Microfarad (µF)” is used to mark the values in the leaded tantalum capacitors. An example of a typical marking observed on a capacitor is “22 and 6V”. These figures indicate that the capacitor is of 22µF and 6V is its maximum voltage.

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