The **M6SXAP-S1M-R** is a specific part number belonging to a series of **Rotary Drip-Proof Coded Switches**, typically manufactured by companies like **Nidec Components (formerly Copal Electronics)**. These components are used to set digital values manually on a circuit board. --- ### 1. Key Technical Specifications Below is a breakdown of the primary technical characteristics of the M6SXAP-S1M-R: | Feature | Specification | | :--- | :--- | | **Type** | Rotary Coded Switch | | **Code Type** | Binary Coded Decimal (BCD) or Hexadecimal (Depending on model variant) | | **Positions** | 10 Positions (0-9) or 16 Positions (0-F) | | **Orientation** | Side Actuation (Right Angle) | | **Terminal Type** | Through-hole (PC Pin) | | **Environmental Protection** | Drip-proof / Washable (Internal O-ring seal) | | **Actuator Style** | Arrow-head (Screw driver slot) | --- ### 2. Functional Details #### Electrical Performance * **Contact Rating:** Usually rated for **100mA at 5V DC** (switching) and **100mA at 50V DC** (non-switching). * **Contact Resistance:** Low initial resistance (typically <100mΩ) to ensure signal integrity for logic circuits. #### Mechanical Durability * **Rotational Life:** Designed for approximately **10,000 steps** or more. * **Detent Torque:** Features a positive "click" feel to prevent the switch from resting between positions. #### Construction & Protection * The "S" in the prefix often denotes a **Side-setting** orientation, meaning the dial is adjusted from the side of the PCB rather than the top. * The **Drip-proof** construction (indicated by the internal O-ring) allows the PCB to be cleaned with solvents after soldering without damaging the internal contacts. --- ### 3. Pin Configuration and Logic The device typically has 4 to 5 pins: 1. **Common (C):** The input voltage or ground reference. 2. **1 (2^0):** Least Significant Bit. 3. **2 (2^1):** 4. **4 (2^2):** 5. **8 (2^3):** Most Significant Bit. When you turn the dial to "3", the switch internally shorts the Common pin to pins **1** and **2** ($1 + 2 = 3$). --- ### 4. Typical Applications * **Address Setting:** Assigning unique IDs to devices on a communication bus (e.g., RS-485 or CAN bus). * **Mode Selection:** Choosing operating parameters for industrial controllers. * **Configuration:** Setting baud rates or timeout intervals on embedded systems without needing a display/interface.