What is a 47k ohm resistor and color code?

47k ohm resistor is one of the most notable types of resistors that are widely used in the electronics industry. While it may not be your small resistor that you will use in small DIY projects, it still holds a significant place in major electronics projects. Given its high resistance value, you are likely to find it in high-power electronics applications.

Just like many other resistors, 47k ohm resistors have different color bands on their surfaces. These bands represent different values, which eventually give the actual resistance value. The bands end up forming a resistor color code.

It is important to have full information about resistor color codes before making that purchase.  In this article, we are going to discuss everything that you should know about 47k ohm resistor color codes.  You will learn what each color band on this resistor means and how to read the code.

47K ohm resistor color code

The main reason why you should pay attention to the resistor code is to verify the value of a resistor. In this case, you will use the color code to verify that actually, the resistance is 47,000 ohms as stated by the manufacturer.

You can read the code by analyzing the color bands on the surface of the resistor. Each color band represents a particular value which when combined will give you a hint of the total resistance value.

These bands are well-spaced next to each other. Furthermore, they have different colors, a key factor that makes it easy to differentiate them.

 The general resistor code is as follows:

· The first band on the resistor represents the very first value of the resistor

· The second band represents the second digit of the resistor’s value

· The third band represents the multiplier value. This is the number of zeroes  after the first two resistance values

· The fourth band stands for the tolerance of the resistor. In most cases, it tends to vary between 5% to 10%

· Some resistors have fifth bands which are used for representing the temperature coefficient of the resistor.

Using the above standards, we can proceed to analyze the color code for a 47k ohm resistor.

The number of bands on 47k ohm resistors varies between 3 to 5. Ome bands have three resistors while others have five.  As we get deeper into these resistors you will get to know the difference between these two and how you should read their resistor color code.

· The first band of a 47k  ohm resistor is yellow and represents the first value of the resistance which is 4.

· The second   band is violet and represents the second digit which is 7

· The third band is orange and represents the multiplier. In this case, it is 10^3

· The fourth band is  gold and stands for the tolerance value of the resistor which is 5%

You will consider all these values to find the total resistance of a 47k ohm resistor. This translates to (47×1000)+-5%. The final value will be 47k ohms ±5%

Applications of 47k ohm resistor

Here are some of the most common use cases of 47k ohm resistors:

Voltage division:

Most electric applications have several circuits, systems, and components. How do you ensure that each component gets the right voltage and current? This is where the importance of resistors comes in.

47k ohm resistors are introduced into voltage divider circuits to facilitate the distribution of voltage. The end result is each component will get the right current and voltage that it needs.

Used as filters

A 47k ohm resistor can be used in the filtering circuit to implement accurate signal filtering. This is ideal especially if the device or application is designed for handling large amounts of electric signals.

In signal filtering circuits, resistors work with other electronic components such as capacitors and even inductors to implement this functionality.

Transistor biasing

Transistor biasing refers to the process of setting the DC operating voltage and current. It defines the amount of either current or voltage that is allowed to go through the transistor. It ensures that the transistor operates within a defined linear region.

Resistors are introduced to such circuits to set the base voltage of the transistor. This will eventually have a direct impact on the operating current of the transistor.

Setting gain in amplifier circuits

 47k ohm resistors are used for setting gain in amplifier circuits. Gain, in this case, refers to the ratio of input signals to the output signal. Various techniques and methods are used for setting this gain. One of them entails the use of resistors.

 By including a 47k ohm resistor in a circuit, you will be able to adjust and control the gain until you get the desired amplification.

So, what type of electronic application are you building? Do you think it will need a 47k ohm resistor? Let us know and we will give you proper guidance.

Final thoughts

 If during your electric circuit design process, you have decided that you need a 47k ohm resistor, then you should proceed to get it and use it in our application. It is an important device that will play its designated role in the circuit.

We have mentioned some of these functions, so you should not have a hard time when it comes to putting the resistor into its rightful application area.

However, to get the best from your 47k ohm resistor, you should ensure that it is of good quality.  Confirm its design and construction to verify it meets the minimum standards that are required for your application.

But, where can I find high-quality resistors for my electronics application? This is where the importance of resistor suppliers and manufacturers comes in. Ensure that the 47k ohm resistors are sourced from the best brands. Working with a reliable supplier such as ICRFQ  is one of the surest ways of ensuring that you get the best 47k ohm resistors.

As a reputable electronic components supplier in China, we will ensure that you get the right 47k ohm 5% resistor that will be perfect for your electronic needs. Contact us directly about buying resistors in bulk and we will give you the maximum help that you need.