The part number **47LAC-161G-R** typically refers to a high-precision, multi-turn wirewound potentiometer (often associated with brands like ETI Systems or similar manufacturers in the precision resistor industry). --- ### 1. Key Technical Specifications Below are the general specifications associated with this component type: | Feature | Specification | | :--- | :--- | | **Component Type** | Precision Potentiometer | | **Construction** | Wirewound | | **Number of Turns** | 10-Turn (Multi-turn) | | **Resistance Value** | 160 Ohms (Standard code "161") | | **Tolerance** | ±5% (Standard) | | **Power Rating** | ~2.0 Watts at 70°C | | **Linearity** | ±0.25% (Independent) | | **Mounting** | Bushing Mount | --- ### 2. Physical Construction The "47L" series is characterized by its robust mechanical design, intended for industrial or aerospace applications where reliability is critical. * **Housing:** Usually constructed from high-grade thermoset plastic or metal casing for thermal stability. * **Shaft:** Stainless steel shaft for smooth rotation and durability against lateral stress. * **Terminals:** Gold-plated or solder-lug terminals to ensure low contact resistance and prevent oxidation. --- ### 3. Part Number Breakdown (Deciphering the Code) While manufacturers vary slightly, the nomenclature usually follows this logic: 1. **47L:** Refers to the series model (7/8" diameter, 10-turn wirewound). 2. **AC:** Usually indicates the bushing/shaft configuration (e.g., standard bushing and shaft length). 3. **161:** The Resistance Code. The first two digits (16) are the value, and the third (1) is the multiplier (10^1). **16 x 10 = 160 Ohms**. 4. **G:** Represents the Linearity tolerance (G often indicates ±0.25%). 5. **R:** Often denotes RoHS compliance (Lead-free). --- ### 4. Common Applications * **Industrial Control:** Used as a feedback sensor for actuator positions. * **Medical Equipment:** High-precision setting adjustment for therapeutic machines. * **Test & Measurement:** Calibration equipment where a fine degree of adjustment is required (over 3600° of rotation). * **Avionics:** Cockpit instrumentation and control surfaces. --- ### 5. Mechanical Integration | Parameter | Detail | | :--- | :--- | | **Rotation Angle** | 3600° +10°/-0° | | **Torque** | Low starting torque (approx. 0.5 to 1.5 oz-in) | | **Life Expectancy** | ~1,000,000 shaft revolutions |