The part number **M2UDS2-22-R2/Q** refers to a high-precision **Potentiometer** or **Rotary Position Sensor**, typically manufactured by specialized industrial component brands (often associated with brands like Midori Precisions or similar aerospace/industrial sensor manufacturers). Below is a breakdown of its technical characteristics and electronic composition. --- ### 1. Technical Specifications The M2UDS series is known for being a "Conductive Plastic" type potentiometer, which offers high resolution and long life compared to wire-wound versions. | Feature | Description | | :--- | :--- | | **Sensor Type** | Rotary Potentiometer (Analog) | | **Element Material** | Conductive Plastic (Carbon/Resin) | | **Resistance Value** | Usually 2kΩ or 5kΩ (depending on specific "22" sub-code) | | **Mechanical Angle** | 360° Continuous Rotation | | **Electrical Angle** | 340° (standard for this series) | | **Linearity** | ±0.5% to ±1% (High Precision) | | **Durability** | ~10 million cycles | --- ### 2. Internal Electronic Components The device consists of four primary internal components that manage the signal output: * **The Resistive Element:** A circular track of conductive plastic. Unlike wire-wound elements, this provides "infinite resolution," meaning the output voltage changes smoothly without "steps." * **The Wiper (Collector):** A multi-fingered precious metal contact that slides along the resistive track. The "R2" in the part number often signifies a specific wiper configuration for low noise. * **The Housing:** Typically an aluminum or high-grade plastic syncro-mount housing designed to shield the internal signal from EMI (Electromagnetic Interference). * **Terminals/Leads:** Gold-plated or silver-plated pins used for Power ($V_{cc}$), Ground (GND), and Signal Output ($V_{out}$). --- ### 3. Part Number Breakdown (Nomenclature) | Segment | Meaning | | :--- | :--- | | **M2UDS** | Series identifier (Conductive Plastic, Single-turn) | | **2** | Size/Diameter code (usually 22mm or Size 9/11 equivalent) | | **22** | Specific resistance or mechanical variation | | **R2** | Dual-gang or specific rotational torque/tolerance setting | | **Q** | Qualification or Quality grade (often refers to Military or Aerospace standards) | --- ### 4. Typical Applications These parts are not found in consumer electronics but rather in high-reliability control systems: 1. **Aerospace:** Joystick position sensing and flap actuators. 2. **Medical:** Precision arm positioning in X-ray or surgical robots. 3. **Industrial:** Valve position feedback and tension control in printing presses. ---