The **47LPQ-02B-R** is a specific electronic component belonging to the family of **Rotary DIP Switches**. These parts are commonly used on Printed Circuit Boards (PCBs) to allow users or technicians to manually set binary or hexadecimal codes to configure device behavior. --- ### 1. Component Overview The "47L" series is typically manufactured by brands like **Grayhill** or similar precision switch manufacturers. This specific part is characterized by its low-profile design and its ability to interface directly with logic circuits. ### 2. Technical Specifications | Feature | Specification | | :--- | :--- | | **Component Type** | Rotary DIP Switch | | **Number of Positions** | 10 Positions (0-9) | | **Output Code** | BCD (Binary Coded Decimal) | | **Actuator Style** | Flush / Screwdriver Slot | | **Mounting Type** | Surface Mount (SMT) or Through-Hole (Model dependent) | | **Contact Rating** | Usually 100mA @ 50VDC (Non-switching) | | **Operating Temperature** | -40°C to +85°C | --- ### 3. Key Characteristics * **Low Profile:** The "LPQ" designation often refers to "Low Profile" and "Quad" (referring to the pin layout or square shape). This makes it ideal for compact electronics where vertical space is limited. * **BCD Output:** When you rotate the dial to a number (e.g., '3'), the pins output the corresponding binary code (0011). This is easily read by microcontrollers. * **Sealed Construction:** These switches are usually "process sealed," meaning they can withstand automated wave soldering and washing processes without internal contamination. --- ### 4. Pin Configuration (Typical BCD) In a standard 10-position BCD rotary switch, you will find a common pin and four output pins representing the binary bits: ```text Position | Pin 1 (1) | Pin 2 (2) | Pin 4 (4) | Pin 8 (8) ------------------------------------------------------- 0 | OFF | OFF | OFF | OFF 1 | ON | OFF | OFF | OFF 2 | OFF | ON | OFF | OFF 3 | ON | ON | OFF | OFF ... and so on up to 9. ``` --- ### 5. Common Applications 1. **Address Setting:** Used to set the unique ID of a device on a bus (like RS-485 or CAN bus). 2. **Mode Selection:** Choosing between different operational modes in industrial equipment. 3. **Configuration:** Setting baud rates or frequency channels in communication modules.