100 Ohms Black VR-Original Code: 19600936

A 100-ohm variable resistor (often labeled as “101”) is a component used to adjust circuit resistance from 0 Ω to 100 Ω. Commonly found as trimpots (for PCB calibration) or potentiometers (for panels), they feature typical power ratings of 0.1W to 0.25W and tolerances ranging from ± 5% to ± 20%.

Common specifications and details for a 100-ohm variable resistor include:

• Resistance Range: 0 Ω to 100 Ω (labeled as 101)
• Power Rating: Typically 0.1W, 0.25W, or 0.5W depending on the package type
• Tolerance: Standard tolerances are usually ± 5%, ± 10%, or ± 20%
• Operating Voltage: Usually rated for 50V to 200V DC/AC depending on the model
• Temperature Range: Commonly -55°C to +125°C

Common Physical Types

1. Trimmer Potentiometers (Trimpots):

• Single-turn: Adjusted with a small screwdriver; common for fine-tuning circuits
• Multi-turn (e.g., 3296 series): Requires multiple rotations of the adjustment screw, allowing for highly precise resistance settings.
• Mounting: Available in through-hole (DIP) or surface-mount (SMD) packages.
  2. Rotary Potentiometers:
• Features a shaft and knob for manual user adjustment (e.g., for volume or fine control panels).

Typical Applications

• Current Limiting: Used in small LED or sensor circuits to restrict current to safe levels.
• Calibration: Trimming or tuning reference voltages in operational amplifiers (Op-Amps) and comparators.
• Biasing: Adjusting the bias point for transistors or ICs.