Description
Nidec Copal Precision Conductive Plastic Potentiometer
Model: JC40S | 1K Ohm | ±0.3% High Linearity | 40mm Single-Turn
Product Overview
The genuine Nidec Copal JC40S Precision Potentiometer is an industrial-grade, single-turn rotary variable resistor engineered for heavy-duty position sensing and precise instrument feedback loops. Featuring a nominal resistance of 1K Ohm and a highly accurate ±0.3% independent linearity rating, this 40mm diameter component leverages advanced conductive plastic technology to deliver essentially infinite tracking resolution. Built to perform reliably under continuous operation, its heavy-duty mechanical casing and low-friction design protect control loops against signal dropout and calibration drift over an extended service life.
Technical Specifications
| Parameter | Specification Details |
|---|---|
| Brand / Manufacturer | Nidec Copal Electronics Corp. (Japan) |
| Model Reference | JC40S |
| Nominal Resistance | 1K Ohm (1kΩ) |
| Linearity Accuracy | ±0.3% Independent Linearity |
| Body Diameter | 40 mm Robust Casing Frame |
| Element Technology | High-Stability Conductive Plastic (Infinite Resolution) |
| Rotational Envelope | Single-Turn Continuous / Servo Mount Design |
| Terminal Configuration | Heavy-Duty Gold-Flashed Solder Terminals |
Key Features & Operational Benefits
- High-Precision ±0.3% Linearity: Assures highly reliable proportional voltage conversion across the wiper track, critical for medical, lab, and robotic feedback control loops.
- Advanced Conductive Plastic Track: Delivers an exceptionally mirror-smooth surface element that completely gets rid of the step-changes found in wire-wound models, providing micro-level resolution adjustments.
- Exceptional Rotational Life: High mechanical durability enables smooth multi-million rotation performance with virtually zero contact resistance degradation.
- Robust 40mm Metal Housing: Premium aluminum structural enclosure shields the precision contact assembly against electromagnetic ambient fields, fine metal chips, and platform shock.

