WH148 10K Potentiometer 15mm Splined Shaft - Linear Rotary Variable Resistor for Audio Control, Arduino & DIY Electronics

The WH148 10K Potentiometer is the industry-standard rotary variable resistor relied upon by makers, engineers, and audio technicians worldwide. Whether you are building a custom guitar effects pedal, designing an intuitive user interface for an Arduino dashboard, or adding volume and tone controls to an audio amplifier, this component delivers dependable analog performance. Featuring a classic three-terminal configuration and a smooth mechanical sweep, it translates physical rotation into precise electrical resistance changes. Its robust construction ensures longevity through thousands of adjustment cycles, making it an essential addition to any electronics workbench, maker space, or prototyping lab.

At the core of the WH148 is a reliable carbon resistive element that provides a linear taper (B-taper), meaning the resistance changes in direct proportion to the rotational angle of the shaft. This predictable response curve makes it ideal for tuning parameters, setting threshold voltages, and controlling analog inputs on microcontrollers like Arduino, ESP32, and Raspberry Pi via analog-to-digital converter (ADC) pins. The component is engineered with a standard threaded bushing that mounts securely through metal or plastic project enclosures, minimizing strain on the internal traces. The robust solder lugs provide ample surface area for secure wire connections, ensuring stable electrical contact even in portable or vibration-prone environments.

Resistance Value: 10K Ohms

Resistance Tolerance: +/- 20 percent

Taper Type: Linear (B-type)

Power Rating: 0.125 Watts

Maximum Operating Voltage: 200V AC

Rotational Life: 10,000 cycles minimum

Rotational Torque: 2 to 20 mN.m

Shaft Type: Knurled and splined (15mm length)

Terminal Type: Solder lugs (3 pins)

Mounting Hole Diameter: 7mm

The WH148 10K potentiometer is exceptionally versatile and finds its home in a wide variety of electronic circuits and DIY builds. Common applications include audio equipment volume, balance, and tone controls, variable speed controllers for DC motors, adjustable LED dimmer circuits, power supply voltage regulators, and front-panel user input controls for custom microcomputer instrumentation. It is fully compatible with standard breadboards when wired correctly and fits seamlessly into printed circuit board (PCB) designs requiring panel-mounted user controls.

When wiring the potentiometer as a voltage divider, connect the outer two terminals to your reference voltage (e.g., 5V) and ground, while connecting the center wiper terminal to your microcontroller analog input pin. Ensure proper mechanical alignment when mounting the threaded bushing to a front panel to prevent undue bending stress on the solder lugs. When soldering hookup wires to the terminals, use a temperature-controlled soldering iron and apply heat for a minimal duration to avoid internal heat damage to the resistive track. Always pair this component with an appropriate push-on knob designed for a 15mm splined shaft to complete your professional-grade enclosure build.

1 x WH148 10K Potentiometer with Mounting Nut and Washer