Uxcell Potentiometer - RV30YN20S - 500 ohm

The Uxcell RV30YN20S Potentiometer is a high-quality single-turn carbon composition component desi...

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AmazonUxcell Black/Silver Sourcingmap Rv30yn20s 500 Ohm Round Shaft Wirewound Linear Variable Potentiometer
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Product Information

Full details

The Uxcell RV30YN20S is a reliable, single-turn carbon composition potentiometer designed for engineers, hobbyists, and technicians who need precise manual resistance control in their electronic circuits. It delivers consistent performance for applications ranging from audio equipment to industrial control panels; however, users should note that as a single-turn device, it is best suited for applications where coarse to medium-precision adjustment is sufficient rather than high-resolution fine-tuning.

All features

Model Part NumberRV30YN20S
BrandUxcell

Extended Product Information

FAQs

Is this a linear or logarithmic taper potentiometer?

The RV30YN20S is generally designed with a linear taper, making it suitable for general-purpose voltage and current adjustments.

Can I use this for high-power applications?

No, this is a signal-level potentiometer. It is not designed to handle high current loads or high-power dissipation.

What is the shaft length?

The shaft length is 10mm.

Is this potentiometer sealed against moisture?

No, this is an open-style carbon composition potentiometer and should be used in dry, indoor environments.

Does it come with a knob?

No, the package includes the potentiometer component and mounting hardware only.

Troubleshooting

Erratic resistance values when turning the knob

Check that the solder joints on all three terminals are secure and verify that the internal wiper is not obstructed by debris.

Shaft feels loose or wobbles

Ensure the mounting nut on the front of the potentiometer is tightened securely against the panel.

Pros and Cons

Pros

  • Durable construction suitable for frequent manual adjustment
  • Standardized 6mm shaft size fits most universal knobs
  • Compact form factor saves space on crowded control panels
  • Reliable carbon composition technology for consistent resistance

Cons

  • Single-turn limit may be less precise than multi-turn models
  • Lacks sealed housing for extreme dusty or wet environments
  • Requires manual soldering for terminal connections

Setup, Compatibility & Care

Installation of the RV30YN20S requires basic soldering skills. The three terminals are clearly marked and should be connected according to your circuit design: the center terminal is the wiper, while the two outer terminals connect across your supply voltage. When mounting, ensure the chassis hole is sized to accommodate the threaded mounting shaft. To maintain longevity, avoid applying excessive side-load force to the 6mm shaft during adjustment, as this can wear the internal wiper contact over time. Keep the unit clean and dry; if the potentiometer becomes scratchy or noisy during adjustment over years of use, a small amount of high-quality electronics-grade contact cleaner can be applied to the interior, though the unit is generally maintenance-free.

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