WH148 Carbon Film Potentiometer 3PIN B20K – KSH 40 at HIMASTORES Mombasa – best electronics in Kenya
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WH148 Carbon Film Potentiometer 3PIN B20K

SKU: HMJ1058 Category: Capacitors and resistors
KSH 40.00
Out of Stock

Product Description

WH148 Carbon Film Potentiometer 3PIN B20K

SingleGang Linear Potentiometer for MediumImpedance Mono Control Applications

The WH148 B20K is a singlegang (3pin) carbon film rotary potentiometer with a 20K ohm resistance and a linear (Btaper) response curve. This compact 16mm diameter component features one independent potentiometer in a single housing, making it ideal for mediumimpedance mono audio circuits, instrument controls, bias adjustments, and precision single-channel applications.

Resistance value: 20K ohms ±20% tolerance
Linear (Bcurve) taper resistance changes proportionally with rotation angle
Single-gang design with 3 pins (input, wiper, ground)
Total mechanical rotation: 300° ±5°
Ensure proper wiring identification - pin 1 (input/high), pin 2 (wiper/output), pin 3 (ground/low)
Do not exceed 200V maximum operating voltage (B-curve variants)

Technical Specifications

ParameterValue
Resistance20K ohms ±20%
TaperLinear (BCurve) resistance changes linearly
Number of Gangs1 (Single)
Number of Pins3 (1 input, 1 wiper, 1 ground)
Rated Power0.125W (B-curve)
Max Operating Voltage200V (B-curve)
Total Rotation Angle300° ±5°
Rotational Life10,000 cycles
Rotational Noise≤47mV
Shaft Diameter6mm
Shaft Length15mm (typical)
Operating Temperature-10°C to +70°C
Insulation Resistance> 100MΩ at DC500V

= Key Features =

SingleGang Design One independent potentiometer for mono or single-channel control

Linear (B) Taper - Predictable linear resistance change for precision adjustments

3Pin Configuration Simple inputwiperground connections

Versatile Resistance Value 20K ohms ideal for balanced audio and instrument circuits

Low Rotational Noise - ≤47mV ensures clean, stable signal output

Compact 16mm Form Factor - Fits standard panel mounting applications

Carbon Film Element Reliable, costeffective resistive material for general-purpose use

= Applications =

  • Mono volume and tone controls
  • Instrument preamps and effects
  • Audio mixing consoles
  • Voltage divider circuits
  • Laboratory test equipment
  • Arduino/ESP analog input controls
  • Hobbyist and DIY electronics projects
  • Bias and calibration adjustments
SingleGang Simplicity Easy 3-pin connection for mono applications
20K Medium Resistance Good balance for audio and generalpurpose circuits

√ Ready to use - standard 6mm shaft with nut and washer included

√ Low rotational noise - 47mV maximum for clean operation

√ 10,000 cycle durability longlasting performance

Package Includes

  1. 1x WH148 3-Pin Potentiometer (B20K)
  2. 1x Mounting Nut
  3. 1x Washer
For Arduino projects, this 20K pot provides stable analog readings - connect wiper to analog input, outer pins to GND and 5V/3.3V
For audio applications, this value offers a good balance between noise performance and signal integrity
For instrument preamps, the 20K value works well with many circuit topologies
Identify pin functions: pin 1 input/high, pin 2 wiper/output, pin 3 = ground/low
This 20K value is commonly used in professional audio and instrument equipment
Potentiometer is also known as the RV16AF series in some markets

Avoid exceeding 0.125W power rating to prevent overheating

Avoid overtightening the mounting nut- as this can damage the shaft or housing