What is a 100 Ohm Resistor?

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A 100-ohm resistor has a special place in the world of electronic components. The fact that it has a wide range of applications makes it necessary for anyone in the industry to have full knowledge about it.  Other than knowing about its technical specifications, you should also gather some relevant data about the color code of a 100-ohm resistor. This is vital when it comes to the identification of a resistor.

Are you interested in using a 100-ohm resistor for your application? This is a perfect guide for you. We are going to discuss everything you should know about it.  At the end of the day, we will guide you on how to choose the best 100-ohm resistors for your application.

What is a 100 ohm resistor?

You probably know that a resistor's main function is to regulate the flow of electric current in a circuit. It does this by providing a defined value of electric resistance depending on how it has been constructed and rated.

So, what does a 100 ohm mean? Defined, this is a resistor whose resistance rating is 100 ohms. It is designed to conduct 10 milliamps or .01 amps in case a 1-volt power source is connected to the circuit, or 100 milliamps in case  10 volts is connected across the circuit.

These figures are obtained by establishing the relationship between current and voltage (V=IR).

Made from a carbon-based compound, a typical 100-ohm resistor has all that it takes to offer the required resistance to the electric circuit's flow.

The current-regulation property of this resistor helps to shield other components in the circuit from a potential overload. This occurs when the current exceeds the amount that is required to power the load.

What is a 100 ohm resistor used for?

Is a 100-ohm resistor perfect for me? This is a question that you are likely to ask when it comes to choosing resistors for your applications.

100-ohm resistors are commonly used in breadboards and many other types of prototyping electronic applications.

 The resistance value of 100-ohm resistors makes them suitable to function as pull-ups, current limiters, and even pull-downs.

Furthermore, their physical size and properties mean that can tightly fit into the breadboard without having an unnecessary movement. In other words, you can easily integrate the resistor into your application without worrying about the availability of space.

Like with other resistors, you should confirm the power requirements of your application before deciding whether a 100-ohm resistor is suitable for you.

Proper consultation with your technicians and electricians will be of great help in deciding whether this resistor is perfect for your specific application needs.

100 ohm resistor color code

100-ohm resistors have four bands of color codes. Each band has a special meaning on the resistor.

The first three bands represent the nominal value of the resistor, which should sum up to 100 ohms The fourth color band represents the tolerance of the resistor.

Each resistor in the market has defined levels of tolerance, a key factor that defines the stability, accuracy, and reliability of a resistor.

When it comes to identifying the band, start from the last one on the resistor. In most cases, it has either silver or gold colors. It stands for the tolerance of the resistance.

After identifying the fourth band, you can proceed to identify the rest of the color bands. The first two represent the foundational value which you can use a multiplier to establish the actual resistance value of the resistor. The third color band is used as a multiplier and you will multiply it with the values of the two-color bands.

Calculating the resistance if 100 ohms resistor

 To give you a clear illustration, let’s try to calculate the resistance value of a 100 ohms resistor using the color bands.

· The first brand which is brown represents the 1

· The second black band is rated o

· The third brown band represents has a value of 1 and is a multiplier

· The fourth band is Gold and represents the tolerance level. It is rated +-5%

To calculate the overall resistance, 100 ×1+- 5%. You will end up with 100 ohms. Theoretically, the resistance value of most 100 ohm resistors varies between 95 to 105 ohms.

In case you are not sure of the color bands and codes, you can always refer to the chart that comes with the resistor. Alternatively, you can use the internet for more information. 

100-ohm resistor manufacturers

Many electronic components manufacturers specialize in making 100-ohm resistors. They are located in different parts of the world.

Initially, Panasonic, Vishay, and Bourns were among the largest manufacturers. With the general growth of industrialization, many other manufacturers have emerged and are doing quite a good job. For instance, China hosts many manufacturers that produce 100-ohm resistors.

With the many manufacturers saturating the market, you should still be careful about which one to choose for your 100-ohm resistor. Limit yourself to the best brands and you will be sure to get high-quality resistors. Even when working with suppliers, ensure that they source their resistors from the best manufacturers.

Conclusion

So, do you think a 100-ohm resistor is the right one for you? You can go ahead and get it for your application needs. While making this choice, you must consider all the key factors such as wattage, temperature coefficient, and tolerance.  They will determine the relevance and suitability of the resistor in your application.

With the diversity and flexibility of a 100-ohm resistor, you will find it relevant in your application area.  When it comes to buying one, ensure that you source it from the best supplier or distributor.

In case you are planning to buy 100 ohm resistors in China, you should consider choosing ICRFQ. We are a reputable electronic component supplier in China and resistors are among the products that we distribute. In addition to selling the products, we also give technical advice to buyers of electronic components, thanks to our 20 years of experience in this industry.