WH138-1AK-3 Rotary Potentiometer with Switch 50K Ohm Linear Carbon Film 24mm Diameter
Professional WH138-1AK-3 rotary potentiometer with integrated switch, featuring 50K Ohm linear resistance, 0.5W rated power, and 24mm diameter. Carbon film construction ensures stable performance with 10,000 cycle lifespan. Ideal for audio equipment, lighting control, and electronic applications requiring precise resistance adjustment.
The WH138-1AK-3 is a high-quality rotary potentiometer featuring an integrated switch and carbon film construction. With a nominal resistance of 50K Ohm and linear resistance characteristics, this single-turn variable resistor delivers reliable performance for various electronic applications.
- Model: WH138-1AK-3
- Resistance: 50K Ohm (B500K)
- Material: Carbon Film
- Resistance Law: Linear (X Type)
- Rated Power: 0.5W
- Diameter: 24mm
- Handle Height: 15mm
- Total Rotation Angle: 300°±5°
| Parameter | Specification |
|---|---|
| Operating Temperature | -10℃ to 100℃ |
| Rated Power | Curve B: 0.5W, Other curves: 0.25W |
| Maximum Operating Voltage | Curve B: AC 500V, Others: AC 250V |
| Resistance Range | 1KΩ to 2MΩ |
| Resistance Tolerance | ±20% (1MΩ or more: 30%) |
| Rotational Noise | ≤47mV |
| Insulation Resistance | >100MΩ at DC 250V |
| Switch Contact Resistance | |
| Switch Rated Power | AC 125V 1A, 4A, 6A |
| Rotational Torque | 2-20 mN·m (20-200 gf·cm) |
| Shaft Stopper Strength | 6 kgf·cm |
| Switch Life | 10,000 cycles |
| Rotary Life | 10,000 cycles |
- Rotary type with integrated switch
- Enhanced tactile feedback and smooth operation
- Special tapers for precise control
- Metal shaft for durability
- Carbon film construction for stable performance
This versatile potentiometer is ideal for multimedia systems, computer speakers, stereo amplifiers, lighting regulation, and various electronic control applications requiring precise resistance adjustment with switching capability.
Produced by an experienced factory established in 2005, our potentiometers undergo rigorous quality control including pre-production sampling and final inspection before shipment. We support OEM customization and ODM orders with advanced production equipment and professional R&D capabilities.
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