Common Resistor Values

Explore the most frequently used resistor values in electronics. Each resistor includes detailed specifications, color codes for all band configurations, and practical applications.

E12 Series Standard
📊 Multiple Band Configurations
🔧 Practical Applications

Low Resistance (1Ω - 100Ω)

Power applications, current sensing, and low-impedance circuits

1Ω
E12
±1%
1W-5W

Ultra-low resistance for current sensing and power applications

Applications:

Current Sensing
Power Supplies
Motor Control
10Ω
E12
±5%
0.25W-1W

Low resistance for pull-down circuits and current limiting

Applications:

Pull-down Resistors
Current Limiting
Voltage Dividers
100Ω
E12
±5%
0.25W-0.5W

Versatile resistance for general purpose applications

Applications:

General Purpose
Biasing
Feedback Circuits

Medium Resistance (220Ω - 4.7kΩ)

LED circuits, pull-up/pull-down resistors, and general purpose

220Ω
E12
±5%
0.25W

Popular for LED current limiting in 5V circuits

Applications:

LED Current Limiting
Base Resistors
Voltage Dividers
330Ω
E12
±5%
0.25W

Ideal for LED current limiting in 3.3V systems

Applications:

LED Current Limiting
Pull-up Resistors
Signal Conditioning
470Ω
E12
±5%
0.25W

Common choice for LED circuits and general applications

Applications:

LED Circuits
Pull-up/Pull-down
Timing Circuits
1kΩ
E12
±5%
0.25W

Most popular resistor value for digital circuits

Applications:

Pull-up Resistors
Base Resistors
Voltage Dividers
2.2kΩ
E12
±5%
0.25W

Excellent for transistor biasing and signal processing

Applications:

Transistor Biasing
Op-amp Circuits
Filters
4.7kΩ
E12
±5%
0.25W

Standard pull-up resistor for I2C and digital interfaces

Applications:

I2C Pull-ups
Digital Interfaces
Microcontroller Circuits

High Resistance (10kΩ - 1MΩ)

High-impedance circuits, precision applications, and low-power design

10kΩ
E12
±5%
0.25W

Universal resistor for analog and digital applications

Applications:

Pull-up/Pull-down
Voltage Dividers
Op-amp Circuits
22kΩ
E12
±5%
0.25W

High-value resistor for low-current applications

Applications:

High-impedance Circuits
Biasing
Feedback Networks
47kΩ
E12
±5%
0.25W

Common in audio circuits and high-impedance applications

Applications:

Audio Circuits
High-impedance Inputs
Timing Circuits
100kΩ
E12
±5%
0.25W

High resistance for precision and low-power circuits

Applications:

Precision Circuits
Low-power Design
Input Impedance
220kΩ
E12
±5%
0.25W

Very high resistance for specialized applications

Applications:

High-impedance Circuits
Precision Measurements
Low-noise Circuits
470kΩ
E12
±5%
0.25W

Ultra-high resistance for sensitive analog circuits

Applications:

Sensitive Analog Circuits
High-impedance Buffers
Precision Instruments
1MΩ
E12
±5%
0.25W

Megohm resistor for ultra-high impedance applications

Applications:

Ultra-high Impedance
Precision Instruments
Low-leakage Circuits

Understanding Standard Resistor Values

E12 Series Standard

The E12 series is the most common standard for resistor values, providing 12 values per decade with approximately 10% spacing. This series covers the most frequently used resistor values in electronic circuits.

These standard values ensure compatibility across different manufacturers and applications, making them readily available and cost-effective for most electronic projects.

Choosing the Right Value

Selecting the appropriate resistor value depends on your specific application. Consider factors such as current requirements, voltage drops, power dissipation, and circuit impedance.

Each resistor value page provides detailed information about color codes, specifications, and practical applications to help you make the right choice for your project.