100 Ohm Resistor

Versatile medium-low resistance for general purpose applications

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

3-Band Configuration

1st2nd×

3-band: Brown-Black-Brown

Brown
Black
Brown

4-Band Configuration

1st2nd×±

4-band: Brown-Black-Brown-Gold (±5%)

Brown
Black
Brown
Gold

5-Band Configuration

1st2nd3rd×±

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

Brown
Black
Black
Brown
Brown

6-Band Configuration

1st2nd3rd×±TC

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

Brown
Black
Black
Brown
Brown
Brown
Practical Applications

Impedance Matching

Matches impedances in RF and high-frequency circuits

Termination Resistors

Terminates transmission lines to prevent reflections

General Purpose

Widely used in various analog and digital applications

Biasing Circuits

Sets operating points in amplifier and transistor circuits

Detailed Information

The 100 ohm resistor is one of the most versatile components in electronics, offering a good balance between current limiting and voltage division. It's commonly used in impedance matching, termination resistors for transmission lines, and general-purpose applications where moderate resistance is needed. Its popularity stems from its ability to work well in both analog and digital circuits.

💡 Pro Tips

  • Excellent for general-purpose applications
  • Common in impedance matching circuits
  • Good choice for learning electronics
  • Standard value in most resistor kits
Specifications
Resistance:
100Ω
Tolerance:±5%, ±1%
Power Rating:0.25W, 0.5W
Temp. Coeff.:±100 ppm/°C
Voltage Rating:Up to 250V
Series:E12
Circuit Calculations
Current At5 V:
50mA
Power At5 V:
0.25W
Voltage Drop At10m A:
1V

Why Choose 100Ω 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