What does 33 mean on a capacitor?
Capacitor Letter Codes Table
| Picofarad (pF) | Nanofarad (nF) | Code |
|---|---|---|
| 33 | 0.033 | 330 |
| 47 | 0.047 | 470 |
| 100 | 0.1 | 101 |
| 120 | 0.12 | 121 |
How do you read capacitor markings?
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.
How can you tell if a ceramic capacitor is positive or negative?
The negative pin of the cap is usually indicated by a “-” marking, and/or a colored strip along the can. They might also have a longer positive leg. Below are 10µF (left) and a 1mF electrolytic capacitors, each of which has a dash symbol to mark the negative leg, as well as a longer positive leg.
How to read ceramic capacitors?
So today, we’re just going to be focusing on how to read ceramic capacitors. The one on the left is for electrolytic capacitors. Ceramic capacitors don’t have a polarity. It is why the schematic symbol is slightly different than the electrical added capacitor. Now there are two charts we have to reference when we’re talking about a capacitor.
How many terminals does a ceramic capacitor have?
The ceramic capacitor has two terminals. It is a non-polarized capacitor, which means there’s no difference between the positive and negative terminal. Look here inside the ceramic capacitor.
What does the black mark on a ceramic disc capacitor mean?
The black mark at the top of the disc represents the operating temperature range, which is approximately -25-°C to +85-°C. Replacement Ceramic disc capacitors come in many versions. For basic general applications, the brown ones are usually utilised for decoupling in low voltage circuits.
What is the polarity of a ceramic disc capacitor?
A ceramic disc capacitor does not have a polarity and connects in any direction on the printed circuit board. If you are new to capacitor codes, then the best way to start is with a chart, because that way, you can see the arrangement of the code. Engineers usually do not require calculators because the code is so simple.