The **M2RT-11-R2** is a specific model within the M2 series of rotary switches, typically manufactured by companies like **NKK Switches**. These components are designed for logic-level applications where space-saving and reliability are critical. --- ### 1. Key Technical Specifications The following table highlights the primary electronic and mechanical characteristics of the M2RT-11-R2: | Feature | Specification | | :--- | :--- | | **Switch Type** | Rotary Switch (Subminiature) | | **Number of Positions** | 2 Positions | | **Number of Poles** | Single Pole (SPDT) | | **Electrical Capacity** | 0.4VA max @ 28V AC/DC max | | **Contact Material** | Gold plated (suitable for low-level signals) | | **Termination Style** | PC Terminals (Through-hole) | | **Mechanical Life** | 100,000 Operations minimum | --- ### 2. Electronic Component Breakdown #### A. Contact Mechanism The "R" in the suffix often denotes the use of **gold contacts**. Unlike silver contacts, gold does not oxidize, making this part ideal for low-energy circuits (logic levels) where a high voltage isn't available to "burn off" oxidation. #### B. Logic Level Rating (0.4VA) This part is specifically rated for **0.4 volt-amperes**. This means it is not intended for power switching (like turning on a motor), but rather for providing input signals to a microcontroller or logic gate. #### C. Actuation Design The M2 series features a "Flat-top" or "Screwdriver actuable" interface. The R2 designation typically refers to the specific physical dimensions of the actuator or the mounting hardware (bracket/bushing style). --- ### 3. Application Use Cases Due to its small footprint and gold-plated reliability, it is commonly used in: * **DIP-switch replacements:** For selecting modes on a PCB. * **Handheld Instruments:** Where space is limited. * **Telecommunications:** For internal configuration settings. * **Medical Equipment:** Due to high mechanical life and reliability. --- ### 4. Circuit Symbol Representation In an electronic schematic, the M2RT-11-R2 is represented as a simple SPDT (Single Pole Double Throw) switch: ```text (Common) o / / o----o o----o (Pos 1) (Pos 2) ```