The **47LT-101B-R** is a specific electronic component belonging to the **Rotary Potentiometer** or **Encoder** family, typically manufactured by companies like **Bourns** or similar specialized hardware brands. It is designed for human-machine interface (HMI) applications. --- ### 1. Key Technical Specifications The part number follows a specific nomenclature that defines its electrical and physical behavior. | Feature | Specification | Description | | :--- | :--- | :--- | | **Component Type** | Rotary Potentiometer | Low-profile tactile control | | **Resistance Value** | 100 Ohms ($10 \times 10^1$) | Indicated by the "101" code | | **Tolerance** | $\pm 20\%$ | Standard for control-grade pots | | **Mounting Type** | Through-hole / PC Pins | Designed for PCB mounting | | **Rotation** | Continuous or Limited | Depends on the specific series sub-type | | **RoHS Status** | Compliant ("-R") | Lead-free and environmentally friendly | --- ### 2. Functional Breakdown The 47LT series is generally characterized by its **long life** and **compact design**. * **Carbon Element:** Most versions use a carbon film element to provide a linear change in resistance as the shaft is turned. * **Tactile Feedback:** These parts often feature "detents" (clicks) to provide the user with physical feedback when adjusting settings. * **Durability:** The "LT" often stands for "Long Life," indicating the internal wipers are designed for high rotational cycle counts (often 50,000 to 100,000 cycles). --- ### 3. Pin Configuration The device typically features three pins for the potentiometer function and may include extra pins if it has an integrated push-switch. ```text Pin 1: Input (Voltage High) Pin 2: Wiper (Variable Output) Pin 3: Ground (Voltage Low) ``` --- ### 4. Common Applications Due to its reliability and small footprint, the 47LT-101B-R is found in: * **Audio Equipment:** Volume or tone control in portable speakers. * **Industrial Controls:** Parameter adjustment on control panels. * **Medical Devices:** Calibration dials for monitoring equipment. * **Consumer Electronics:** Settings menus for household appliances. ---