The **F2VS-10-R** is a specific electronic component typically identified as a **tactile switch** or a **rotary DIP switch**, often associated with manufacturers like Copal Electronics or similar industrial suppliers. It is designed for PCB mounting and is used for circuit configuration. --- ### 1. General Specifications Based on standard industry nomenclature for this series, here are the primary electronic and mechanical characteristics: | Feature | Specification (Typical) | | :--- | :--- | | **Type** | Rotary DIP Switch | | **Positions** | 10 Positions (0-9) | | **Output Code** | BCD (Binary Coded Decimal) | | **Mounting Type** | Surface Mount (SMD) / Vertical | | **Actuator Style** | Recessed or Flat (Screwdriver slot) | | **Contact Rating** | 100mA at 5V DC (Switching); 100mA at 50V DC (Non-switching) | | **Contact Resistance** | < 100mΩ | --- ### 2. Key Components & Construction * **Rotor:** The moving part that the user rotates. It usually features a slot for a flat-head screwdriver. In the "10-R" version, the "10" denotes 10 distinct detent positions. * **Wiping Contacts:** Gold-plated or silver-plated copper alloy contacts ensure high reliability and prevent oxidation over time. * **Housing:** Made of high-temperature liquid crystal polymer (LCP) or PPS plastic to withstand **reflow soldering** temperatures. * **Terminals:** Usually 4 to 6 pins depending on the logic. For a 10-position BCD switch, there is typically 1 common pin and 4 output pins (representing bits 1, 2, 4, and 8). --- ### 3. Electronic Functionality (BCD Coding) The "R" in the suffix often refers to the coding or the orientation (Real Code vs. Complement Code). In a **Real Code (BCD)** setup, the switch maps the physical position to a 4-bit binary output: | Position | Bit 1 (2⁰) | Bit 2 (2¹) | Bit 4 (2²) | Bit 8 (2³) | | :--- | :--- | :--- | :--- | :--- | | **0** | Open | Open | Open | Open | | **1** | Closed | Open | Open | Open | | **5** | Closed | Open | Closed | Open | | **9** | Closed | Open | Open | Closed | --- ### 4. Common Applications * **Address Setting:** Used in industrial automation (RS-485 nodes) to set a unique ID for a device on a bus. * **Configuration:** Selecting modes of operation on a PCB without needing a digital interface. * **Peripheral Identification:** Setting SCSI IDs or jumper-less configurations in legacy hardware. --- ### 5. Part Number Breakdown While manufacturer codes vary slightly, the breakdown for the F2VS series generally follows: * **F2:** Series identifier. * **VS:** Vertical Surface mount style. * **10:** Number of positions (0-9). * **R:** Real Code (standard BCD) and/or RoHS compliant (depending on the specific datasheet version).