The **RAR-10-R** typically refers to a specific series of **Rotary DIP Switches** manufactured by companies like *Copal Electronics* or *Nidec Components*. These components are used to set binary or hexadecimal values on a circuit board manually. --- ### 1. Technical Specifications The "RAR" series is defined by its right-angle mounting and compact footprint. Below are the general specifications for the RAR-10-R: | Feature | Specification | | :--- | :--- | | **Code Type** | Real Code (Binary Coded Decimal - BCD) | | **Positions** | 10 Positions (0-9) | | **Orientation** | Right Angle (Side Actuation) | | **Mounting Type** | Through-Hole (THT) | | **Actuator Style** | Recessed Slot (Requires screwdriver) | | **Switching Rating** | 5V DC, 100mA | | **Non-Switching Rating** | 50V DC, 100mA | --- ### 2. Physical Construction The part is designed for durability and ease of integration into industrial or consumer electronics: * **Housing:** Usually made of high-temperature liquid crystal polymer (LCP) to withstand wave soldering. * **Contacts:** Gold-plated contacts to prevent oxidation and ensure a reliable electrical connection over time. * **Sealing:** Most models are O-ring sealed or wash-tight, allowing them to survive board washing processes after soldering. --- ### 3. Pin Configuration (10-Position BCD) The "10" in the part number indicates it is a decimal (BCD) switch. It translates the physical position of the dial into a 4-bit binary output across specific pins: | Dial Position | Pin 1 (1) | Pin 2 (2) | Pin 3 (4) | Pin 4 (8) | | :--- | :--- | :--- | :--- | :--- | | **0** | OFF | OFF | OFF | OFF | | **1** | **ON** | OFF | OFF | OFF | | **5** | **ON** | OFF | **ON** | OFF | | **9** | **ON** | OFF | OFF | **ON** | --- ### 4. Common Applications * **Address Setting:** Used in RS-485 or CAN bus networks to set a unique ID for a peripheral device. * **Configuration:** Selecting operating modes on industrial controllers without needing a digital interface. * **Prototyping:** Often found on development boards to toggle hardware features.