330 Ohm Resistor

Ideal for LED current limiting in 3.3V systems and pull-up applications

E12 Series
±5%, ±1% Tolerance
0.25W, 0.5W Power
Color Code Configurations

3-Band Configuration

1st2nd×

3-band: Orange-Orange-Brown

Orange
Orange
Brown

4-Band Configuration

1st2nd×±

4-band: Orange-Orange-Brown-Gold (±5%)

Orange
Orange
Brown
Gold

5-Band Configuration

1st2nd3rd×±

5-band: Orange-Orange-Black-Brown-Brown (±1%)

Orange
Orange
Black
Brown
Brown

6-Band Configuration

1st2nd3rd×±TC

6-band: Orange-Orange-Black-Brown-Brown-Brown (±1%, 100ppm/°C)

Orange
Orange
Black
Brown
Brown
Brown
Practical Applications

3.3V LED Current Limiting

Optimal current limiting for LEDs in 3.3V microcontroller systems

Pull-up Resistors

Suitable pull-up value for 3.3V digital systems

Signal Conditioning

Used in signal conditioning circuits for sensors

Microcontroller Interfaces

Common in Arduino and other microcontroller projects

Detailed Information

The 330 ohm resistor is perfectly suited for modern 3.3V systems, particularly for LED current limiting in microcontroller projects. As electronics move toward lower voltage systems, this resistor value has become increasingly important. It provides optimal current limiting for LEDs in 3.3V systems while also serving as an excellent pull-up resistor for digital interfaces.

💡 Pro Tips

  • Perfect for 3.3V LED circuits
  • Common in modern microcontroller projects
  • Good pull-up value for 3.3V systems
  • Lower power consumption than 220Ω in 3.3V systems
Specifications
Resistance:
330Ω
Tolerance:±5%, ±1%
Power Rating:0.25W, 0.5W
Temp. Coeff.:±100 ppm/°C
Voltage Rating:Up to 250V
Series:E12
Circuit Calculations
Current At3 V3:
10mA
Power At3 V3:
0.033W
Led Current At3 V3:
~8mA

Why Choose 330Ω Resistors?

Key Benefits

  • Standard E12 series value for universal compatibility
  • Available in multiple tolerance and power ratings
  • Cost-effective and widely available
  • Suitable for both hobbyist and professional applications

Technical Advantages

  • Stable performance across temperature ranges
  • Low noise characteristics for sensitive circuits
  • Multiple package sizes available
  • Compatible with automated assembly processes