The term **94-1-R** typically refers to a specific part number within the **Bourns 94 Series** of single-turn rotary potentiometers. These are precision electronic components used to adjust voltage or current in a circuit. --- ### 1. Technical Specifications The "94" series identifies the physical build and internal mechanics, while the "R" suffix usually denotes compliance or specific terminal styles. | Feature | Specification | | :--- | :--- | | **Component Type** | Single-Turn Potentiometer | | **Resistance Range** | 100 Ohms to 1 Megohm (standard) | | **Power Rating** | 2.0 Watts at 70°C | | **Tolerance** | ±10% (standard) | | **Mounting Type** | Panel Mount / Through-hole | | **Rotation Angle** | 300° (Mechanical) / 280° (Electrical) | | **Operating Temp** | -1°C to +125°C | ### 2. Physical Construction The 94-1-R is known for its **Cermet** (Ceramic-Metal) element, which provides high stability and durability compared to standard carbon potentiometers. * **Housing:** Typically 5/8" square plastic or metal casing. * **Shaft:** Available in various lengths (FMS - Finished Metal Shaft). * **Terminals:** Usually features PC pins or solder lugs for secure connections. * **Sealing:** Often rated IP67 (Washable), making it suitable for industrial environments where dust or moisture is present. ### 3. Applications These parts are designed for precision control where reliability is critical: 1. **Industrial Controls:** Adjusting motor speeds or sensor thresholds. 2. **Audio Equipment:** High-end gain or volume control. 3. **Medical Equipment:** Calibration of diagnostic tools. 4. **Test/Measurement:** Voltage regulation in laboratory power supplies. --- ### 4. Part Number Breakdown (Example) The part number is typically structured to tell the engineer exactly what features are included: `94` (Series) - `1` (Terminal Style/Bushings) - `R` (RoHS Compliance / Packaging code) ```json { "Manufacturer": "Bourns", "Series": "94", "Material": "Cermet", "Compliance": "RoHS" } ```