# Rotary potentiometer WH148, 15 mm, 20K

> Rotary potentiometer WH148, linear, 20K, with 3 pins. Metal shaft 6mm, shaft length 15mm, threaded body for panel mounting, includes washer and nut. Rotation angle 300 degrees, lifespan 10,000 cycles. Used as a voltage divider for manual adjustment of signal or voltage, compatible with Arduino, STM32, ESP32 and other platforms with analog inputs.

- Page: https://sigmanortec.ro/en/rotary-potentiometer-wh148-15-mm-20k
- Price: 1.32 RON
- Availability: In stock; 1-2 zile
- Reference: 33211-3 · EAN: 5942155868553
- Category: Electronic components > Resistants and Potentiometers
- Specifications: Model: WH148; Shaft length: 15 mm; Nominal resistance: 20 kΩ
- Package (shipping data): 0.006 kg
- Updated: 2026-09-14
- Shop: [Sigmanortec.ro](https://sigmanortec.ro/en/llms.txt)
- Prices: RON, VAT included; prices and stock as of 2026-10-22 02:22 (Europe/Bucharest)

## Description

Linear rotary potentiometer 20K with 3 pins, ideal for manual adjustment of voltage or signal in Arduino, STM32, or ESP32 projects, provides smooth control for brightness, motor speed, or analog level. It has a 6mm metal shaft for standard knobs and panel mounting with threaded bushing, includes washer and nut, 300-degree rotation angle, and a lifespan of up to 10,000 rotations.
WH148 rotary potentiometer with 3 pins, 20K value, intended for applications where manual adjustment of a signal or voltage is required. The resistance variation follows a linear curve between minimum and maximum, making it suitable for smooth and predictable adjustments such as brightness control, motor speed control, or analog signal tuning.
The 6mm diameter metal shaft allows the installation of a standard knob, and the body features a threaded bushing for panel mounting.
The package includes the washer and nut needed for installation. The robust construction provides a service life of 10,000 rotations, and the 300-degree rotation angle offers good resolution across the full adjustment range.
The potentiometer is compatible with Arduino, STM32, ESP32 boards, or other platforms with analog inputs, and is often used as a voltage divider for reading a variable value through the ADC converter.
Specifications:
Model: WH148
Value: 20K
Potentiometer type: Linear
Number of pins: 3
Rotation angle: 300 degrees
Rotation life cycle: 10,000 cycles
Shaft length: 8.5mm
Shaft length with thread: 15mm
Shaft thickness: 6mm
Included accessories: Washer and nut
Pinout:
Usage:
Insert the potentiometer shaft through the hole in the panel and secure it with the included washer and nut.
Connect pin 1 to VCC and pin 3 to GND to use it as a voltage divider.
Connect pin 2 (the wiper) to an analog input of the development board, for example A0 on Arduino.
Rotate the shaft to vary the output voltage between 0V and the supply voltage.
Read the value through the ADC converter and use it in your desired application.
Avoid forcing the shaft beyond its mechanical limits to prevent damage to the resistive element.