WH148 Carbon Film Potentiometer 3PIN B500K – KSH 40 at HIMASTORES Mombasa – best electronics in Kenya
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WH148 Carbon Film Potentiometer 3PIN B500K

SKU: HMJ1060 Category: Capacitors and resistors
KSH 40.00
Out of Stock

Product Description

WH148 Carbon Film Potentiometer 3PIN B500K

SingleGang Linear Potentiometer for HighImpedance Mono Control Applications

The WH148 B500K is a singlegang (3pin) carbon film rotary potentiometer with a 500K 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 highimpedance mono audio circuits, guitar tone controls, tube amplifier bias adjustments, and precision single-channel applications where high resistance values are required.

Resistance value: 500K 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
Resistance500K ohms ±20%
TaperLinear (BCurve) resistance changes linearly
Number of Gangs1 (Single)
Number of Pins3 (1 input, 1 wiper, 1 ground)
Rated Power0.033W (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

High Resistance Value 500K ohms ideal for high-impedance guitar and tube 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 =

  • Guitar tone and volume controls (high-Z pickups)
  • High-impedance mono audio circuits
  • Tube amplifier bias adjustments
  • Instrument preamps
  • Voltage divider circuits (high impedance)
  • Laboratory test equipment
  • Hobbyist and DIY electronics projects
  • Sensor signal conditioning (high-Z sensors)
SingleGang Simplicity Easy 3-pin connection for mono applications
500K High Resistance Perfect for guitar circuits and highimpedance tube applications

√ 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 (B500K)
  2. 1x Mounting Nut
  3. 1x Washer
For guitar tone control, this 500K pot works well with highimpedance singlecoil and vintage-style pickups
For high-impedance voltage dividers, the 500K value ensures minimal loading on the signal source
For tube amplifier bias circuits, this pot provides fine adjustment capability with good resolution
Identify pin functions: pin 1 input/high, pin 2 wiper/output, pin 3 = ground/low
This 500K value is commonly used in vintage guitar and tube-based audio equipment
Potentiometer is also known as the RV16AF series in some markets

Avoid exceeding 0.033W power rating to prevent overheating

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

Avoid use in lowimpedance circuits- as the high resistance may cause noise and signal degradation