The **FCR-16F-R** is a specific electronic component belonging to the category of **rotary DIP switches**. It is manufactured primarily by companies like **Nidec Components (formerly Copal Electronics)** or similar manufacturers specializing in board-level switching components. ### 1. General Overview The FCR-16F-R is a subminiature, surface-mount or through-hole (depending on the specific series suffix) rotary coded switch. Its primary function is to allow manual configuration of binary or hexadecimal values on a Printed Circuit Board (PCB). ### 2. Technical Specifications Below are the typical electronic and physical specifications for the FCR-16F-R: | Feature | Specification | | :--- | :--- | | **Code Type** | Hexadecimal (16 positions) | | **Output Code** | Binary Coded Hexadecimal (0-F) | | **Switching Voltage** | Max 5V DC (Logic level) | | **Switching Current** | 100mA | | **Contact Resistance** | 100 mΩ maximum | | **Operating Temp** | -25°C to +70°C | | **Mechanical Life** | 10,000 steps minimum | | **R-Suffix Meaning** | Usually indicates "Real Code" (or in some contexts, RoHS/Reel packaging) | --- ### 3. Key Electronic Parts & Construction The internal mechanism consists of several critical layers that ensure electrical connectivity: 1. **Rotor (Actuator):** The top part that the user turns (using a screwdriver). It contains a conductive "wiper." 2. **Contact Plate:** A stationary PCB or metal plate inside the housing with a specific pattern of traces. 3. **Terminals:** Usually 5 pins (4 for the binary bits 1-2-4-8 and 1 for the Common/Ground). 4. **Housing:** Made of heat-resistant plastic (often PPS or PBT) to withstand soldering temperatures. --- ### 4. Logic Table (Hexadecimal Output) When you turn the dial, the internal wiper connects the **Common (C)** pin to various output pins. | Position | Output (1-2-4-8) | Hex Value | | :--- | :--- | :--- | | 0 | 0000 | 0 | | 1 | 1000 | 1 | | 7 | 1110 | 7 | | 15 (F) | 1111 | F | --- ### 5. Common Applications * **Address Setting:** Used in RS-485 or CAN bus networks to set a unique ID for a device. * **Mode Selection:** Selecting between different firmware modes on an industrial controller. * **Configuration:** Adjusting hardware settings without needing a digital interface or software tool.