What Is Copal jc40s potentiometer

A potentiometer is a variable resistor used to control electrical signals by varying resistance through a rotating or sliding contact. The Copal JC40S is a conductive-plastic, single-turn rotary potentiometer designed for precision control and measurement in electronic circuits. It offers smooth and accurate resistance adjustments, making it ideal for use in control panels, instrumentation, and industrial equipment.

The JC40S model features a 40 mm diameter body, single-turn operation with a wide electrical angle (approx. 345°), and conductive plastic resistive element for high resolution and low noise performance. It is designed to provide reliable resistance adjustment over millions of cycles, ensuring consistent performance in both new and retrofit applications.

Key Features

1. Precision and Resolution

The Copal JC40S delivers high linearity and accurate resistance tracking, with precision ratings as tight as ±0.3%, enabling reliable signal control and fine adjustment in sensitive circuits.

2. Long Operational Life

Built with robust materials and conductive plastic technology, the JC40S is rated for up to 30 million rotational cycles, making it exceptionally durable even in high-use environments.

3. Wide Resistance Options

Available in common resistance values (e.g., 500 Ω to 20 kΩ), this potentiometer can accommodate a broad range of design needs from fine signal trimming to coarse control.

4. Smooth Rotation and Low Torque

The JC40S offers smooth rotary operation with controlled torque, providing stable tactile feedback and minimizing mechanical stress during adjustment.

5. High Electrical Angle

With an effective electrical travel near 345°, this potentiometer allows extensive adjustment range, making it suitable for precise tuning and calibration tasks.

6. Compact and RoHS Compliant

Despite its precise mechanical and electrical design, the JC40S remains compact and compliant with environmental standards (RoHS), integrating easily into modern electronic systems.

Applications of the Copal JC40S Potentiometer

The versatility and precision of the JC40S make it suitable across various industries and electronic systems:

1. Industrial Control Panels

Used in equipment to adjust settings such as speed controls, gain adjustments, and manual trim controls, where smooth and accurate input is essential.

2. Audio Equipment

Ideal for volume, tone, and balance controls in professional and consumer audio gear, owing to its high resolution and low signal distortion.

3. Instrumentation & Test Equipment

Serves as an adjustable sensor or calibration tool in measurement devices where precise input variation correlates to accurate results.

4. Robotics and Automation

Can be implemented for position feedback or manual override settings in robotic arms, servo systems, and factory automation controllers.

5. OEM Electronics & Prototyping

Electronics designers use JC40S potentiometers as variable controls in custom circuits, prototype boards, and development systems.

6. Marine & Transportation Systems

In navigation and control panels for marine vessels or vehicles, these potentiometers provide robust and dependable manual control in harsh environments.

Why Choose the Copal JC40S Potentiometer?

Reliability & Longevity

With a rated life of up to 30 million cycles, the JC40S ensures minimal maintenance and long-term stability in demanding applications.

Precision Performance

Its conductive plastic element and tight linearity deliver smooth, predictable variation in resistance—crucial for fine-tuning electronic systems.

Versatility

Suitable for a wide range of resistance values and diverse applications—from industrial controls to audio, instrumentation, and automation.

Compact Design

Despite its precision, the JC40S maintains a compact form factor, enabling easier integration into both panel-mounted and PCB designs.

Trusted Brand

Manufactured by Copal (now part of Nidec), a respected name in passive electronic components, the JC40S combines quality engineering with global availability.