The **10TS-8A0-R** is a specific part number for a **Rotary Coded Switch**, typically manufactured by companies like **Copal Electronics** (now Nidec Components). These switches are used to manually set binary or hexadecimal values on a circuit board. --- ### 1. Technical Specifications The following table outlines the key electrical and physical characteristics of the 10TS-8A0-R series: | Feature | Specification | | :--- | :--- | | **Switch Type** | Rotary Coded Switch | | **Code Type** | Binary Coded Decimal (BCD) or Hexadecimal | | **Number of Positions** | 10 Positions (0-9) | | **Actuator Style** | Flush or Through-hole (Standard) | | **Contact Rating** | 100mA @ 5V DC (Switching) / 100mA @ 50V DC (Non-switching) | | **Contact Resistance** | 100 mΩ maximum | | **Operating Temp** | -40°C to +85°C | | **Mounting Type** | Through-hole (DIP) | --- ### 2. Key Features * **Miniature Size:** Designed to save space on High-density Printed Circuit Boards (PCBs). * **Reliability:** Features gold-plated contacts to prevent oxidation and ensure a stable electrical connection over time. * **Washable:** Most models in this series are sealed (O-ring or epoxy) to withstand wave soldering and board washing processes. * **Clear Marking:** The top of the switch is clearly numbered (0 to 9) to allow for easy manual configuration. --- ### 3. Pinout and Working Principle The switch works by rotating a dial that connects a "Common" pin to a combination of output pins (usually labeled 1, 2, 4, and 8). #### BCD Truth Table (Logic 1 = Connected) | Position | Pin 8 | Pin 4 | Pin 2 | Pin 1 | | :---: | :---: | :---: | :---: | :---: | | **0** | 0 | 0 | 0 | 0 | | **1** | 0 | 0 | 0 | 1 | | **2** | 0 | 0 | 1 | 0 | | **5** | 0 | 1 | 0 | 1 | | **9** | 1 | 0 | 0 | 1 | --- ### 4. Common Applications * **Address Setting:** Used in industrial networking (like RS-485 or CAN bus) to set the unique ID of a device. * **Mode Selection:** Selecting operational modes in embedded systems without needing a digital interface. * **Configuration:** Adjusting hardware parameters like baud rates or timer intervals. ---