The **3515AL-D14-R** is a specific electronic component typically associated with precision potentiometers or rotary encoders, often manufactured by brands like **Bourns** or similar industrial component specialists. Below is a detailed breakdown of its specifications and characteristics. --- ### 1. General Specifications This part belongs to a family of **panel controls** or **precision potentiometers**. These are used to adjust voltage levels or signals with high accuracy. | Feature | Specification (Typical) | | :--- | :--- | | **Component Type** | Precision Potentiometer / Rotary Sensor | | **Mounting Type** | Panel Mount | | **Shaft Diameter** | 1/4 inch (Standard) | | **Rotation** | Multi-turn (often 3, 5, or 10 turns) | | **Termination Style** | Solder Lugs or PC Pins | | **RoHS Status** | Compliant (indicated by the 'R' suffix) | --- ### 2. Part Number Breakdown The alphanumeric code follows a specific nomenclature that defines the physical and electrical attributes of the part: * **3515**: Refers to the series (Standard 7/8" Round Precision Potentiometer). * **AL**: Often indicates the bushing and shaft material/style (e.g., Aluminum or specific metal alloy). * **D14**: This segment usually identifies the electrical resistance and shaft length/configuration. * *D* may represent a specific taper or mechanical tolerance. * *14* often refers to the shaft diameter or length in specific increments. * **-R**: Indicates **RoHS compliance** (Lead-free). --- ### 3. Key Technical Attributes Precision components like the 3515AL series are engineered for longevity and stability. #### A. Mechanical Durability * **Rotational Life:** Often rated for 500,000 to 1,000,000 cycles. * **Construction:** Rugged housing designed to withstand industrial environments. #### B. Electrical Precision * **Linearity:** High independent linearity (typically ±0.25% or better), meaning the output voltage is highly proportional to the shaft position. * **Power Rating:** Usually around 1.0W to 2.0W at 70°C. --- ### 4. Common Applications These parts are not found in consumer gadgets but rather in professional-grade equipment: 1. **Industrial Controls:** Used in motor speed control or valve positioning. 2. **Medical Equipment:** Precise adjustment of diagnostic imaging or treatment machines. 3. **Test & Measurement:** Calibration knobs on oscilloscopes or power supplies. 4. **Avionics:** Control panels for cockpit instrumentation. ---