What Is 220 ohm Resistor Color Code?

220 Ohm resistor Image source Project Point

Control and regulation are key features when it comes to dealing with electricity. You should be able to regulate the flow of electric current. This is exactly why resistors are needed. They are used for controlling and regulating the flow of electric current.

Resistors have built-in electric resistance to the flow of electric current. Each resistor is designed to offer a specific level of electric resistance. One such resistor is a 220 Ohm resistor. It has a wide range of applications in the world of electronics.  It is used by both hobbyists and as well as people handling electric commercial projects.

In case you believe a 220-ohm resistor is right for your project, this is a perfect guide for you. We are going to discuss everything that you should know about it. One of the key topics that we will cover is the 220-ohm resistor color code. You will learn what these colors are and their relevance.

Overview of 220 Ohm resistor

What is a 220 Ohm resistor? You may ask. This is a resistor that is designed to offer a resistance value of 220 ohms. With this level of resistance, it can fully regulate the flow of electric current in its designated circuit. Keep in mind that  Ohms is the SI unit for resistance.

When integrated in an electric circuit this resistor will offer the defined or designated resistance value to the flow of the circuit.  

Before you decide that you need a 220 Ohm resistor, you start by analyzing the circuit, and its components.  For example, if the circuit will have an LED, you should define the voltage rating of the load and also the current that will be running through the circuit. Once that is decided, you will then decide the resistance that should be applied to the circuit.

In our case, you would use a 220 ohm resistor if you want to regulate the brightness of your LED bulb. The resistor will also protect the bulb from excess current, something that can easily damage the LED.

You will know it is a 220 Ohm resistor using its label. Alternatively, resistor color codes will also give you hints about the value of the resistor.

Like other resistors, a 220 ohm resistor has two terminals on both ends. They allow you to connect the resistor directly to your electric circuit onto which it will offer the desired resistance.

Color codes for 220 ohm resistor

 Now let's discuss the 220 ohm resistor color code and what they stand for.

A 220 ohm resistor with 5%  tolerance has four main color bands. These are red, red brown, and gold.

· 1^st color band is Red and has the value of 2

· The second band  is Red and also has a value of 2

· The third band is Brown and is a multiplier band with a value of 10

· The fourth band is Gold and represents the tolerance with a value of +-5%

From the above color bands, we can get the resistance value which will  be approximately 220 ohms.

220 ohms resistors with 10% tolerance

The color codes for  220 ohm resistor with a 10% tolerance are as follows:

· 1^st color band is red and has a value of 2

· The second band is also red and has a value of 2

· The third band is brown with a multiplier of 10

· The fourth band is silver with a  tolerance of ±10%

Using the above color codes, the final resistance value will range between 220 ohms to 240 ohms.

In both the two scenarios, each band has an important role to play. It represents a significant value that you will use for calculating the total value of the resistor.

The first three bands in a 220 ohm resistor  are used for indicating the nominal resistance value of the resistor. The fourth band stands for the tolerance level. The same rule applies if the resistor has five bands. The fifth band will represent the tolerance of the resistor.

However, the color codes of some 220 ohm resistors come with six color bands. In such a case, the extra sixth band will represent the temperature coefficient of the resistor. This is how the resistor behaves about the temperature changes.

Take note that all resistors have some levels of tolerance. This tends to affect the value of resistance as it should be close to 220 ohms.  The best resistor should have a narrow range of tolerance.

How do I read the color codes on 220 ohm resistor?

To read these codes, you should start by identifying the last color band on the resistor. In most cases, it is either silver or gold. The last band in most cases represents the tolerance of the resistor. It is usually separated from the rest of the bands by a small gap.

Once you have identified the last band, turn your attention to the other bands. Start with the first two bands that are on the opposite sides of the last band. They will give you the base value of the resistor.

The third band is the multiplier and you will multiply its value with the first two bands. The answer will be the complete value of the 220 ohm resistor. 

Conclusion

Are you working on an electronic project? You should have full information or knowledge about the 220 Ohm resistor color code. This information will come in handy whenever you are working on any part of a circuit that should be connected to this resistor.

Additionally,  knowledge of the color codes will be relevant when you are buying the resistors. You will just spot the color codes or bands and determine whether it is suitable for your application. The ultimate goal is to get a resistor whose features and resistance are compatible with your application.

Beyond the numbers, you should  focus on the quality of  the resistor. This will have an impact on the performance and reliability of the resistor. Where  you buy 220 Ohm resistors will determine the quality that you get. Buying from the best suppliers and distributors is the surest way of ensuring that you end up with the best quality.

In case you want to buy 220 Ohm resistors in China, consider choosing ICRFQ. We are a reputable electronic components supplier in China and resistors are among the products that we supply.  Do not hesitate to place bulk orders for the 220 Ohm resistors.