X9C103S Digital Potentiometer Module 10KOHM Adjustable Resistor Board Arduino

🔧 X9C103S Digital Potentiometer Module 10K | AuscomTech

The X9C103S Digital Potentiometer Module is a compact electronically adjustable resistor board designed for precise, programmable resistance control in embedded and industrial applications.

It provides a 10KΩ adjustable resistance range with 100 tap positions, allowing resistance to be digitally controlled via microcontroller signals instead of a mechanical potentiometer.

This module is ideal for Arduino, STM, and industrial control systems, including applications such as analogue reference signal adjustment for VFDs, calibration circuits, and automated tuning systems.

⭐ Key Features

• Digital resistance control – Replaces mechanical potentiometers with repeatable electronic adjustment.
• 100-step resolution – Fine control across the full 10KΩ range for accurate tuning.
• Wide supply compatibility – Operates from 3V to 5V, suitable for most microcontrollers.
• Analogue signal control capability – Can be used for reference voltage adjustment in control systems such as VFD inputs.
• Three-terminal interface – VL (low), VH (high), and VW (wiper output) for flexible circuit integration.
• Compact and lightweight – Ideal for embedded designs and space-constrained projects.

📊 Technical Specifications

• Chip: X9C103S
• Resistance Value: 10KΩ
• Resolution: 100 steps
• Supply Voltage: 3V to 5V DC
• Terminal Voltage Range: -5V to +5V (VL to VH)
• Typical Wiper Resistance: 40Ω
• PCB Size: 27.0mm × 13.0mm
• Weight: 2.40g
• Operating Temperature: -40°C to +85°C

🧩 Typical Applications

• VFD analogue reference signal control (speed input tuning)
• Programmable voltage dividers
• Automatic calibration systems
• Sensor signal conditioning
• Audio level or gain adjustment
• Microcontroller-based tuning and control systems

⚠️ Important Notes

• Designed for low-power signal control only, not for direct load driving.
• Suitable for analogue reference signals (e.g. 0–5V), not high-voltage VFD terminals.
• Ensure proper isolation when interfacing with industrial equipment.
• Header pins may require soldering before use.
• Control requires digital input signals from a microcontroller.

📦 Package Includes

• 1 × X9C103S Digital Potentiometer Module
• 1 × Pin Header Strip

🔗 Recommended Accessories (Not Included)

• Arduino UNO or Nano – for control and testing
• ESP32 development board – for wireless or IoT control
• Breadboard – for rapid prototyping
• Jumper wires – for quick connections