What is 6.8 K Ohm Resistor? 6.8 K Ohm Resistor Color Code

Contents

• What is 6.8 K Ohm Resistor?

• How to read 6.8 K resistor color code?

• 6.8 K ohm resistor color code

• Application of 6.8K Resistor

• Summary

6.8k ohm resistors(6800 ohm resistors) are common resistors in life. This article will introduce the meaning of different color codes on 6.8k color code resistors and the application of 6.8k color code resistors in detail.

What is 6.8 K Ohm Resistor?

A 6.8k ohm resistor, often written as 6.8kΩ, is an electronic component that has a resistance value of 6800 ohms. The "k" in 6.8k stands for "kilo," which represents a multiplication factor of 1000. Therefore, 6.8k ohms is equal to 6800 ohms (6.8 * 1000).

Resistors are passive electronic components used in circuits to control the flow of electric current. They are commonly used for various purposes, including voltage division, current limiting, biasing transistors, and setting the operating point of electronic devices.

How to read 6.8 K resistor color code?

6.8k Resistor Color Code Chart

Color	First Band	Secon Band	Multiplier Band	Tolerance Band
Blue	6	6	1MΩ	+/- 0.25%
Grey	8	8	100MΩ	+/- 0.05%
Red	2	2	100Ω	+/- 2%
Gold	none	none	0.1Ω	+/- 5%

To read the color code of a 6.8k ohm resistor, you need to interpret the color bands on the resistor. The color code consists of four bands that represent the resistance value and tolerance of the resistor. Here's how you can read the color code for a 6.8k ohm resistor:

1. First Band (First Digit): This band represents the first digit of the resistance value. Look at the color of this band and match it to the corresponding number in the color code chart. For a 6.8k ohm resistor, the first band is usually Blue, representing the digit "6."

2. Second Band (Second Digit): This band represents the second digit of the resistance value. Again, match the color of this band to the corresponding number in the color code chart. For a 6.8k ohm resistor, the second band is usually Grey, representing the digit "8."

3. Third Band (Multiplier): This band represents the multiplier for the value you've obtained from the first two bands. The color of this band corresponds to a power of 10. For a 6.8k ohm resistor, the third band is usually Red, representing a multiplier of 10^2 (100).

4. Fourth Band (Tolerance): The fourth band (gold) represents the tolerance of the resistor, which is +/- 5%. This means the actual resistance value of the resistor can vary by up to 5% from the nominal value of 6.8k ohms.

To calculate the resistance value using the color code:

Resistance = (First Digit * 10 + Second Digit) * Multiplier
Resistance = (6 * 10 + 8) * 100 = 6800 ohms = 6.8k ohms (+/- 5%)

6.8 K ohm resistor color code

The color code for a 6.8k ohm resistor is as follows:

1. First Band (First Digit): Blue (6)

2. Second Band (Second Digit): Grey (8)

3. Third Band (Multiplier): Red (10^2)

4. Fourth band(Tolerance): Gold(+/- 5%)

So, the color bands "Blue Grey Red Gold" represent a 6.8k ohm resistor.

Application of 6.8K Resistor

A 6.8k ohm resistor can be used in various electronic applications where precise resistance values are required to achieve specific circuit behaviors. Here are some common applications of a 6.8k ohm resistor:

Voltage Dividers

In voltage divider circuits, resistors are used to divide a voltage into smaller fractions. A 6.8k ohm resistor can be used in conjunction with other resistors to create specific voltage levels in a circuit.

Biasing Transistors

Transistors often require biasing resistors to establish the appropriate operating point for proper amplification. A 6.8k ohm resistor could be used in the base or emitter circuits of a transistor to set the bias voltage.

Analog Signal Processing

In analog signal processing circuits, such as amplifiers and filters, resistors are used to control gain, attenuation, and filtering characteristics. A 6.8k ohm resistor might be used in feedback networks of operational amplifiers or in filter circuits.

Pull-Up and Pull-Down Resistors

Pull-up and pull-down resistors are used to ensure that a signal line (often in digital circuits) is at a defined logic level when it's not being actively driven. A 6.8k ohm resistor can be used for this purpose.

Current Limiting

In LED circuits or current source circuits, a 6.8k ohm resistor could be used to limit the current flowing through a component or to set the current source value.

Timing Circuits

Resistor-capacitor (RC) timing circuits are used in applications like oscillators and pulse generators. A 6.8k ohm resistor might be part of an RC timing network.

Voltage Regulation

Resistor networks are used in voltage regulator circuits to set reference voltages or feedback paths.

Sensor Interface

In sensor circuits, resistors can be used to set biasing or voltage levels for sensor output signals.

It's important to note that the specific application of a 6.8k ohm resistor depends on the circuit's requirements and the desired behavior. The resistor's value plays a role in determining how it affects the circuit's operation, and its use can range from signal processing to biasing and voltage division.

Summary

Through the author's introduction, I believe you will find that it is not difficult to read the color code of 6.8K resistors. When you learn to read 6.8K color code resistors, you can easily read the meaning of its color code when you encounter 2.2 K color code resistors.