The **CD16RM0S-B-R** is a specific type of electromechanical component known as a **Rotary Coded Switch**. It is commonly used in industrial and consumer electronics to manually set parameters or addresses on a circuit board. --- ## 1. Technical Specifications Below are the primary technical characteristics of the CD16RM0S-B-R: | Parameter | Specification | |:---|:---| | **Manufacturer** | C&K (or compatible brands) | | **Circuit Type** | Binary Coded Hexadecimal (16 positions) | | **Mounting Type** | Surface Mount (SMT/SMD) | | **Actuator Type** | Flush, Screwdriver slot | | **Number of Positions** | 16 (0 to F) | | **Contact Rating** | 0.4VA @ 20V AC/DC | | **Pitch** | 2.54mm (standard) | | **Termination Style** | Gull Wing (G-type) | --- ## 2. Key Features & Functionality ### Binary Coding (Hexadecimal) The "16" in the part number indicates it has 16 distinct positions. As you rotate the dial, the switch internal mechanism connects the "Common" pin to different combinations of output pins (typically 4 pins representing $2^0, 2^1, 2^2,$ and $2^3$). * **Input:** Manual rotation. * **Output:** 4-bit binary output (e.g., Position 9 = `1001`). ### Process Compatibility * **Sealed Construction:** The "S" usually denotes a process-sealed design. This means the switch can withstand wave soldering and aqueous cleaning processes without contaminants entering the contact area. * **Surface Mount:** Designed for automated pick-and-place assembly lines. ### Actuation It features a **flush actuator**, meaning it does not protrude high above the PCB. It requires a small flathead screwdriver or a specialized tool to turn, which prevents accidental changes by the user. --- ## 3. Pinout Logic Example For a Hexadecimal (16-position) switch, the logic table generally follows this pattern: | Position | Hex Label | Pin 1 (1) | Pin 2 (2) | Pin 3 (4) | Pin 4 (8) | |:---:|:---:|:---:|:---:|:---:|:---:| | 0 | 0 | OFF | OFF | OFF | OFF | | 5 | 5 | **ON** | OFF | **ON** | OFF | | 15 | F | **ON** | **ON** | **ON** | **ON** | --- ## 4. Common Applications * **Address Setting:** Configuring unique IDs for devices on a BUS (like RS-485 or CAN bus). * **Mode Selection:** Choosing between different firmware operational modes. * **Industrial Controls:** Setting timers or threshold limits on PLCs.