All categories
Featured selections
Trade Assurance
Buyer Central
Help Center
Get the app
Become a supplier
Alibaba
Electronic Components, Accessories & Telecommunications
Passive Components
Potentiometers, Variable Resistors
Rotary Potentiometers, Rheostats
  • 24mm Potentiometer WH138 Soundwell Potentiometer With Switch B500K Rotary Potentiometer With Metal Shaft
  • 24mm Potentiometer WH138 Soundwell Potentiometer With Switch B500K Rotary Potentiometer With Metal Shaft
  • 24mm Potentiometer WH138 Soundwell Potentiometer With Switch B500K Rotary Potentiometer With Metal Shaft
  • 24mm Potentiometer WH138 Soundwell Potentiometer With Switch B500K Rotary Potentiometer With Metal Shaft
  • 24mm Potentiometer WH138 Soundwell Potentiometer With Switch B500K Rotary Potentiometer With Metal Shaft
  • 24mm Potentiometer WH138 Soundwell Potentiometer With Switch B500K Rotary Potentiometer With Metal Shaft
24mm Potentiometer WH138 Soundwell Potentiometer With Switch B500K Rotary Potentiometer With Metal Shaft

24mm Potentiometer WH138 Soundwell Potentiometer With Switch B500K Rotary Potentiometer With Metal Shaft

$0.25-$0.60/ Piece|500 Piece/Pieces(Min. Order)

Customization:

Customized packaging（Min.Order: 10000 pieces）
View product details

24mm Potentiometer WH138 Soundwell Potentiometer With Switch B500K Rotary Potentiometer With Metal Shaft

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Variable Resistance Control: A 24mm rotary potentiometer with a B500K resistance range, designed to adjust electrical resistance in circuits via a metal shaft and integrated switch.
  • Carbon Film Technology: Utilizes carbon film material for stable performance, with a ±20% resistance tolerance, ensuring reliability in diverse electronic applications.

Key features

  • 1. Durable Metal Shaft Construction

    • With a corrosion-resistant metal shaft and carbon film technology, you can ensure long-lasting performance in demanding electronic applications. The metal construction withstands mechanical stress better than plastic alternatives, while carbon film guarantees stable resistance over time. Disclaimer: Resistance stability may vary based on environmental conditions.

  • 2. Ergonomic Knurled Design for Precise Control

    • The knurled metal shaft and adjustable knob allow for smooth, tactile adjustments even in low-light or gloved conditions. This design outperforms smooth-surface potentiometers in precision and usability. Disclaimer: Rotation smoothness may depend on mounting orientation.

  • 3. High Voltage and Tolerance Reliability

    • With a 50V operating voltage and ±20% resistance tolerance, you can handle robust electrical demands while maintaining consistent performance. This exceeds basic specifications for standard PCB applications. Disclaimer: Voltage ratings are tested under controlled lab conditions.

  • 4. Compact Form Factor for Space-Constrained Electronics

    • The 24mm size enables seamless integration into tight PCB layouts, making it ideal for audio/video equipment and industrial controls where space is limited. Disclaimer: Actual compatibility depends on specific circuit design requirements.

  • 5. Built-in Switch for Dual Functionality

    • The integrated switch functionality allows simultaneous control of resistance and circuit on/off states, reducing the need for additional components compared to standalone potentiometers. Disclaimer: Switch durability may vary with frequent use.

Product details

24mm Potentiometer WH138 Soundwell Potentiometer With Switch B500K Rotary Potentiometer With Metal Shaft

The Soundwell WH138 Potentiometer is a compact, high-performance rotary potentiometer with a metal shaft and integrated switch, designed for precision control in electronic circuits. Featuring carbon film technology and a 50V operating voltage rating, it is ideal for PCB applications requiring reliable resistance adjustment.

Technical specifications

FeatureSpecificationBenefit
MaterialDurable plastic body, metal shaftEnhanced durability and corrosion resistance
Resistance500kΩ (B500K)Versatile for audio/volume control
Tolerance±20%Consistent performance across ranges
TechnologyCarbon filmStable electrical properties
Operating Voltage50VSafe for most electronic circuits
Shaft TypeMetal (aluminum)Withstands mechanical stress
ApplicationPCBCompact design for space-constrained PCBs

Customization guide

Adjustable parameters include resistance value (e.g., 10kΩ, 50kΩ, 100kΩ), shaft length, and terminal configuration. Customize tolerance levels (e.g., ±5% for precision applications) or switch type to meet specific circuit requirements.

Get inspired

From audio equipment to industrial controls, the WH138’s compact design and metal construction make it a go-to component for precise signal adjustment. Pair it with your PCB projects to achieve seamless volume control, tone adjustment, or sensor calibration.

Choose your model

ParameterBase Model (WH138)Advanced ModelPro Model
Resistance Range500kΩ1MΩ10MΩ
Operating Voltage50V75V100V
Tolerance±20%±10%±5%
Shaft MaterialAluminumStainless SteelStainless Steel
Switch TypeStandardWaterproofWaterproof + Lock

Supplier's note

  1. Technical Breakthroughs:

    • Metal Shaft Strength: The aluminum shaft (Base) and stainless steel (Pro) ensure longevity in high-stress environments.
    • Carbon Film Stability: Superior to traditional wire-wound designs, offering smoother resistance transitions.
    • Integrated Switch: Enables dual functionality (resistance adjustment + on/off control) without extra components.

  2. Version Selection Guide:

    • Base Model (WH138): Ideal for hobbyists and basic PCB applications where cost-efficiency is key.
    • Advanced Model: Suitable for audio engineers needing higher resistance (1MΩ) and waterproofing for humid environments.
    • Pro Model: Designed for industrial automation and robotics, offering ±5% tolerance and 100V rating for precision control in harsh conditions.

With the Pro’s 10MΩ range, you can achieve ultra-fine adjustments in high-precision systems. The Advanced model’s waterproof switch ensures reliability in outdoor equipment. Choose the Base model for straightforward PCB integration with 20% tolerance—perfect for prototyping.

Frequently asked questions

  • Which rotary potentiometer model suits PCB applications with a 500K resistance requirement?

  • How do I maintain the metal shaft of a Soundwell WH138 Potentiometer?

  • Carbon film vs. wire-wound resistors: Which is better for audio equipment?

  • Can I customize the resistance tolerance of the WH138 Potentiometer?

  • Is the 50V max voltage rating sufficient for industrial control systems?

  • What makes the WH138 suitable for audio equipment like mixers or amplifiers?

  • How does the ±20% resistance tolerance affect performance in circuits?

  • Why choose a metal shaft over plastic for potentiometers in harsh environments?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Rotary PotentiometersAudio/Video, Industrial ControlsResistance: 10kΩ (Std) ▲ 50kΩ (Base) ▲ 100kΩ (Adv)
Shaft: Plastic (Std) ▲ Aluminum (Base) ▲ Stainless Steel (Adv)
Tolerance: ±20% (Std) ▲ ±10% (Base) ▲ ±5% (Adv)
Max Voltage: 50V (IEC 60068)		Adjustable resistance, compact design, durable shafts (Aluminum ▲ Stainless Steel)
Smooth rotation for precise control		Wear over time, requires manual adjustment, higher cost for advanced versions
Trimmer PotentiometersCircuit Calibration, Embedded SystemsResistance: 1kΩ-10kΩ (Std)
Non-rotary design (screwdriver adjustment)
Size: 5mm x 5mm (IEC 60137)		Space-saving, precise adjustments, cost-effective for factory setupsNot user-adjustable, requires tools, limited resistance range
Linear PotentiometersSlider Controls, Medical EquipmentTravel Distance: 10mm (Std) ▲ 25mm (Adv)
Resistance: 1kΩ-1MΩ (IEC 60320)
Linearity: ±2% (Std) ▲ ±0.5% (Adv)		Intuitive linear control, smooth adjustment for audio/medical applicationsLarger footprint, complex installation, higher cost for high-precision variants
Preset PotentiometersFactory Calibration, Consumer ElectronicsResistance: 1kΩ-100kΩ (Std)
Non-adjustable post-installation
Temperature Range: -20°C to 70°C (IEC 60068)		Secure settings, prevents tampering, compact sizeCannot adjust post-installation, limited customization
Audio Control PotentiometersAudio Mixers, HeadphonesTaper Type: Logarithmic (for audio)
Resistance: 10kΩ-100kΩ (IEC 60117)
Carbon Film Tech (AS 1359)
Rotation Smoothness: 270° (Std) ▲ 360° (Adv)		Accurate volume control, tactile feedback, carbon film durabilityHigher cost, limited to audio applications
High-Temperature PotentiometersAutomotive, AerospaceOperating Temp: 85°C (Std) ▲ 150°C (Adv)
Material: Plastic (Std) ▲ Ceramic (Adv)
Resistance Stability: ±15% (Std) ▲ ±5% (Adv)		Withstands extreme temperatures, robust ceramic constructionHeavier, larger size, higher cost, limited to industrial use

Related searches

hydrogen gas inhalersuper gym adjustable bench techno gymcustom leggings cartoon letter printed sportsSonic Electric Toothbrushelectric cargo trucksuk 13a light switch usb type-ccar parts accessories foglight fog lampcustom logo cooler bagcustom logo party decorationsevening silk satin dress bodycon casualElei tribal dressportable bass DJ subwooferspeaker 6 inch with microphone compressionbest sellers series high performance highwayploughing machine farm equipment disc harrow

The Product Description is generated by third-party, and Alibaba.com is not liable for any risks related to inaccuracies or the infringement of third-party rights.

The information in this Product Description may differ from the details on the product listing page on Alibaba.com. Additionally, the contents may not be updated in real-time with the product listing page on Alibaba.com, and there may be delays in reflecting the most updated information. The description on product listing page takes precedence. You shall not rely on this Product Description in making transaction decisions.

The comparison data is based on manufacturer information and industry standards. Actual results may vary depending on individual use cases. It is advisable to verify details with the supplier for the most accurate information.