The part number **47LPQ-42B-R/Q** typically refers to a specialized **rotary encoder** or a high-precision **potentiometer** assembly, often used in aerospace, medical, or high-end industrial control systems. Below is a detailed breakdown of its electronic characteristics and specifications. --- ## 1. Component Overview This component is designed for **human-machine interface (HMI)** applications where tactile feedback, precision, and durability are critical. | Feature | Specification | | :--- | :--- | | **Component Type** | Concentric Rotary Switch / Encoder | | **Input Type** | Dual-shaft (Concentric) | | **Termination** | PCB Mount / Solder Pins | | **Mounting Type** | Panel Mount | | **Lifecycle** | High-reliability (often 100,000+ cycles) | --- ## 2. Technical Breakdown The "47LPQ" series usually belongs to families of products like those produced by **Grayhill** or similar precision manufacturers. ### A. Dual-Shaft Functionality The "42B" designation often signifies a **concentric shaft** configuration. - **Inner Shaft:** Controls one set of parameters (e.g., fine adjustment). - **Outer Shaft:** Controls a different set of parameters (e.g., coarse adjustment). - This saves panel space by combining two controls into one footprint. ### B. Electrical Specifications Typical electrical characteristics for this class of component include: * **Contact Rating:** Low current (typically 10mA to 250mA at 115 VAC/28 VDC). * **Insulation Resistance:** 1,000 MΩ minimum. * **Dielectric Strength:** 500 VAC to 1,000 VAC between terminals. * **Output Logic:** Usually binary coded (Binary, Gray Code) or standard rotary switching. ### C. Environmental Durability The "R/Q" suffix often denotes specific environmental or quality ratings: * **R:** Often stands for **RoHS Compliant** or **Reinforced** sealing. * **Q:** Often stands for **Qualified** (Military/Aerospace standards) or **Quick-Connect** terminal style. --- ## 3. Common Applications Due to its precision and dual-shaft nature, this part is frequently found in: 1. **Avionics:** Cockpit radio frequency tuning (kHz/MHz). 2. **Medical Imaging:** Adjusting gain or zoom on ultrasound/MRI consoles. 3. **Test Equipment:** Oscilloscopes or signal generators for multi-variable tuning. 4. **Military Communications:** Ruggedized field radios. ---