16mm Linear Carbon Potentiometers

Description

• What it is: A standard 16mm rotary, variable resistor that uses a carbon composition element to adjust resistance as you turn the knurled shaft.

• Key Specs:

  • Taper: Linear (“B” prefix) — resistance changes evenly/proportionally as the shaft rotates.

  • Resistance Values: Available in 5kΩ (B5K), 10kΩ (B10K), 20kΩ (B20K), and 100kΩ (B100K).

  • Power Rating: Typically 0.125W (1/8 Watt).

  • Rotation Angle: ~$300^\circ$ mechanical rotation.

• Key Features: Standard 3-pin panel-mount design with an $M7\times0.75$ threaded bushing, nut, and washer for easy chassis mounting; fits standard press-on or set-screw knobs.

• Common Uses: Volume and tone controls in audio equipment, speed adjustments for DC motor controllers, light dimmers, and analogue input tuning on Arduino, ESP32, and synth projects.