The **RTS-4C2-R/E** is a specific model within the series of **Rotary DIP Switches** manufactured by companies like **COPALELE (Nidec Components)**. These components are designed for circuit configuration, addressing, and mode selection on printed circuit boards (PCBs). --- ### 1. General Specifications The part number follows a specific nomenclature that defines its electronic and physical characteristics. | Feature | Specification | Description | | :--- | :--- | :--- | | **Type** | Rotary DIP Switch | Used for manual binary/code setting. | | **Positions** | 10 or 16 | Usually BCD (10) or Hexadecimal (16). | | **Output Code** | Real Code | The output matches the dial position. | | **Actuator Type** | Shaft / Recessed | "R" often denotes a recessed/flat actuator. | | **Mounting Style** | Through-hole or SMD | Depends on the specific suffix (E/R). | --- ### 2. Key Electronic Characteristics These switches are rated for low-power signal switching. * **Switching Capacity:** Usually **5V DC, 100mA**. * **Non-Switching Rating:** Up to **50V DC, 100mA** (Current it can carry without moving). * **Contact Resistance:** Maximum **100 mΩ**. * **Insulation Resistance:** Minimum **1,000 MΩ** at 100V DC. * **Dielectric Strength:** **250V AC** for 1 minute. --- ### 3. Pinout and Circuitry The "4C" in the part number typically refers to a **4-bit output**. When the dial is turned, it bridges internal metallic traces to create a specific binary output across the pins. * **Common Pin (C):** The input signal pin. * **Output Pins (1, 2, 4, 8):** These represent the binary weights. * **Binary Logic:** * Position 0: All pins open. * Position 1: Pin 1 connected to Common. * Position 3: Pin 1 and Pin 2 connected to Common (1+2=3). * Position 7: Pin 1, 2, and 4 connected to Common (1+2+4=7). --- ### 4. Suffix Meanings (R/E) In the Nidec/Copal naming convention: * **R:** Often indicates **Tape and Reel** packaging or a specific **Recessed** actuator shape to prevent accidental adjustment. * **E:** Usually signifies **Environmental** compliance (Lead-free/RoHS) or specific terminal plating. --- ### 5. Common Applications * **Industrial Controls:** Setting Modbus or CAN bus node IDs. * **Telecommunications:** Configuring internal hardware settings. * **Computing:** Manual BIOS or hardware override settings on motherboards.