The Copal Electronics Inc. ST-32ETA20K is a trimming potentiometer designed for precision adjustment and calibration in electronic circuits. As a member of the ST-32 series, it offers a compact size and reliable performance, making it suitable for a wide range of applications where accurate resistance adjustment is required.

Applications:

• Calibration of test and measurement equipment.
• Gain adjustment in amplifier circuits.
• Setting reference voltages in power supplies.
• Fine-tuning frequency in oscillator circuits.
• Adjusting sensitivity in sensor circuits.

Features:

• Compact size for space-constrained applications.
• Enclosed construction for environmental protection.
• High resolution for precise adjustment.
• Stable resistance value over time and temperature.
• Through-hole mounting for secure PCB attachment.

Benefits:

• Enables precise calibration and adjustment of electronic circuits.
• Ensures accurate and reliable performance of equipment.
• Reduces the need for manual tuning and adjustments.
• Provides a cost-effective solution for resistance adjustment.
• Offers long-term stability and reliability.

Technical Specifications:

The ST-32ETA20K has a resistance value of 20kΩ. The power rating is typically around 0.25W. The operating temperature range is generally between -25°C to +85°C. The temperature coefficient of resistance (TCR) is typically ±100 ppm/°C. It features a through-hole mounting style with a standard pin spacing. The mechanical rotation angle is approximately 210 degrees. The resistance tolerance is usually ±10%. It is constructed with a cermet resistive element to ensure stability and precision. The body is commonly made of a durable plastic material.

Its enclosed construction protects the resistive element from dust, moisture, and other environmental contaminants, ensuring long-term reliability and consistent performance. This makes it suitable for use in industrial, commercial, and consumer electronic applications.