The **RTS-114-R** is a specific type of **Rotary DIP Switch** manufactured by **Copal Electronics** (now Nidec Components). It is a passive electronic component used to set logic levels or binary addresses on a printed circuit board (PCB) manually. --- ### 1. Key Technical Specifications The part number follows a specific nomenclature that defines its electronic and physical characteristics: | Feature | Specification | | :--- | :--- | | **Switch Type** | Rotary DIP Switch | | **Number of Positions** | 10 Positions (0-9) | | **Output Code** | Real Binary Coded Decimal (BCD) | | **Actuator Style** | Recessed (Screwdriver slot) | | **Mounting Type** | Through-hole (Standard DIP footprint) | | **Orientation** | Top Actuated | | **Contact Rating** | 100mA at 5V DC (Switching), 100mA at 50V DC (Non-switching) | --- ### 2. Functional Details #### Binary Coded Decimal (BCD) Output The "1" in the part number indicates a **Real Code**. When you rotate the switch to a specific number, it bridges the internal common pin to the output pins (1, 2, 4, 8) to represent that number in binary. * **Position 0:** All pins Open (OFF). * **Position 1:** Pin 1 is Closed (ON). * **Position 3:** Pins 1 and 2 are Closed (ON). * **Position 9:** Pins 1 and 8 are Closed (ON). #### Mechanical Structure * **R (Suffix):** Usually denotes "RoHS compliant" or specific packaging (like Tube or Tray). * **Sealing:** These switches are often wash-tight, meaning they can survive the soldering and cleaning process without internal contamination. --- ### 3. Common Applications The RTS-114-R is primarily used in industrial and communication hardware: * **Address Setting:** Setting unique IDs for nodes on a bus (like RS-485 or CAN bus). * **Configuration:** Selecting operation modes or baud rates on embedded systems. * **Industrial Controls:** User-defined presets on PLCs or motor drivers. --- ### 4. Circuit Symbol and Pins In a schematic, this part is represented as a 5-pin or 6-pin device: 1. **Common (C):** Connected to the voltage source (VCC) or Ground (GND). 2. **Pins 1, 2, 4, 8:** The weight outputs that connect to the microcontroller's GPIO pins. ---