The **RTF-16-R2SR** is a high-performance, compact **Rotary Coded Switch** (often categorized under DIP switches or selector switches). These components are primarily used to set binary or hexadecimal parameters manually on a circuit board. --- ### 1. Technical Specifications The following table summarizes the core electronic and mechanical characteristics of the RTF-16-R2SR: | Parameter | Specification | | :--- | :--- | | **Product Type** | Rotary Coded Switch | | **Code Type** | Real Code (Binary Coded Hexadecimal) | | **Positions** | 16 Positions (0-F) | | **Mounting Type** | Through-Hole (Vertical) | | **Actuator Type** | Shaft (R-type) | | **Contact Rating** | 100mA at 42V DC (Switching) / 400mA (Steady) | | **Operating Temp** | -40°C to +85°C | | **Terminal Pitch** | 2.54mm (Standard Breadboard/PCB spacing) | --- ### 2. Key Features and Operation The "16" in the part number indicates a **Hexadecimal** output. This means for every position the dial is turned to, a specific combination of output pins is activated. * **Logic Type:** It uses "Real Code," meaning the output follows standard binary logic: * Position `0`: All output pins are OPEN. * Position `1`: Pin 1 is CLOSED. * Position `F` (15): All pins (1, 2, 4, 8) are CLOSED. * **Actuator (Shaft):** The "R" designation typically refers to a raised shaft or a specific rotor style that allows for manual adjustment without needing a screwdriver. * **Sealing:** These units are often IP67-rated (process sealed), allowing them to withstand wave soldering and board washing. --- ### 3. Pinout Configuration The device typically features 5 or 6 pins. The standard mapping for a 16-position switch is as follows: | Pin Name | Function | | :--- | :--- | | **C** | Common Terminal (Input voltage/Ground) | | **1** | Bit 0 (Value 1) | | **2** | Bit 1 (Value 2) | | **4** | Bit 2 (Value 4) | | **8** | Bit 3 (Value 8) | --- ### 4. Typical Applications The RTF-16-R2SR is commonly found in industrial and embedded electronics where user-defined hardware addressing is required: * **Address Setting:** Setting unique IDs for nodes on a RS-485 or CAN bus network. * **Mode Selection:** Choosing between 16 different pre-programmed firmware behaviors. * **Configuration:** Adjusting timer intervals or frequency channels on RF modules.