The **FCR-B6-R** is an electronic component primarily classified as a **Rotary Coding Switch** (often referred to as a BCD or Hexadecimal encoded switch). These parts are commonly manufactured by companies like **Copalelectronics (Nidec)** or similar industrial component suppliers. Below is a detailed breakdown of its electronic specifications and features. --- ### 1. General Specifications The FCR series typically features a compact design for PCB mounting, used to set parameters or addresses in electronic circuits. | Feature | Specification | | :--- | :--- | | **Type** | Rotary Coded Switch | | **Code Type** | Binary Coded Decimal (BCD) or Hexadecimal | | **Number of Positions** | 10 (0-9) or 16 (0-F) | | **Mounting Type** | Through-Hole (Right Angle/Horizontal) | | **Terminal Pitch** | Standard 2.54mm (0.1 inch) | | **Actuator Style** | Recessed Screwdriver Slot or Shaft | --- ### 2. Electrical Characteristics These switches are designed for low-power signal switching, not for driving heavy loads. * **Switching Capacity:** Usually around **100mA, 5V DC**. * **Non-Switching Capacity:** Up to **100mA, 50V DC** (current the part can carry while stationary). * **Contact Resistance:** Typically **100mΩ maximum**. * **Insulation Resistance:** **1,000MΩ minimum** at 100V DC. * **Dielectric Strength:** 250V AC for 1 minute. --- ### 3. Pinout & Binary Logic The "R" in the part number often indicates a **Real Code** (as opposed to Complement Code). In a Real Code configuration, the switch connects the "Common" pin to the numbered output pins based on binary logic: | Position | Pin 1 (2⁰) | Pin 2 (2¹) | Pin 4 (2²) | Pin 8 (2³) | | :--- | :--- | :--- | :--- | :--- | | **0** | Open | Open | Open | Open | | **1** | **Closed** | Open | Open | Open | | **2** | Open | **Closed** | Open | Open | | **3** | **Closed** | **Closed** | Open | Open | --- ### 4. Key Applications * **Address Setting:** Setting IDs for devices on a communication bus (like RS-485 or CAN bus). * **Mode Selection:** Choosing operating modes on industrial motherboards. * **Configuration:** Adjusting hardware settings without the need for a software interface or display. --- ### 5. Mechanical Features * **Rotor Direction:** The "B6" variant usually indicates a specific orientation (Right Angle), allowing the switch to be adjusted from the side of a PCB. * **Sealing:** Most FCR models are O-ring sealed or wash-tight, allowing them to withstand wave soldering and board washing processes.