The **47LPQ-02W-R** is a specific part number typically associated with **Rotary DIP Switches** manufactured by companies like Grayhill or similar specialized component vendors. These switches are used to manually set binary or hexadecimal values on a circuit board. --- ### 1. Key Technical Specifications The "47LPQ" series generally refers to low-profile, high-reliability rotary switches. Below are the common specifications for this model: | Parameter | Specification | | :--- | :--- | | **Switch Type** | Rotary DIP Switch | | **Number of Positions** | 2 Positions (On/Off or Binary 0-1) | | **Actuator Style** | Flush / Screwdriver Slot (Low Profile) | | **Output Code** | Binary Coded (Standard) | | **Mounting Type** | Surface Mount (SMD) or Through-Hole (depending on footprint) | | **Contact Rating** | Usually 100mA at 50V DC | | **Operating Life** | ~2,000 to 10,000 Cycles | --- ### 2. Physical Characteristics * **Low Profile (LP):** The "LP" in the part number indicates a low-profile design, making it suitable for compact electronics where vertical space is limited. * **Sealed Construction:** These parts are often "process sealed" (indicated by the "W" or "R" suffixes in some series), meaning they can withstand wave soldering and board washing without internal contamination. * **Material:** Housing is typically made of high-temperature thermoplastic to withstand reflow soldering temperatures. --- ### 3. Applications These switches are rarely toggled by the end-user. Instead, they are "set-and-forget" components used for: 1. **Address Setting:** Setting unique IDs for devices on a communication bus (e.g., RS-485 or CAN bus). 2. **Configuration:** Selecting hardware modes (e.g., choosing between 110V and 220V logic or baud rates). 3. **Security Coding:** Setting manual keys for garage door openers or older RF transmitters. --- ### 4. Circuit Symbol and Pinout In a schematic, this part is represented as a series of switches connected to a common pin. ```text [ Common ] | --------------- | | | [Bit 0][Bit 1][Bit n] ``` --- ### 5. Identification Table If you are looking at the markings on the physical part: | Marking | Meaning | | :--- | :--- | | **47** | Series Identifier | | **LPQ** | Low Profile / Quality Grade | | **02** | 2 positions/bits | | **W/R** | Packaging/Sealing (e.g., Tape & Reel or Washable) | ---