The **M2RT-0F-R** is a specific model of a **Rotary Switch** produced by **Nidec Components (formerly Copal Electronics)**. It belongs to the M2 series and is designed for high-reliability switching in compact electronic circuits. --- ### 1. Technical Specifications The M2RT-0F-R is characterized by its miniature size and robust mechanical design. | Parameter | Specification | | :--- | :--- | | **Manufacturer** | Nidec Components (Copal) | | **Switch Type** | Rotary Switch | | **Circuit Type** | Double Pole, Double Throw (DPDT) | | **Positions** | 2 Positions | | **Actuator Type** | Flat (Flush) Actuator | | **Mounting Type** | Through-hole (PC Pin) | | **Contact Rating** | 0.4VA Max @ 28V AC/DC | | **Operating Force** | 0.98 N·m to 2.45 N·m | | **RoHS Status** | Compliant (R suffix) | --- ### 2. Key Features and Construction * **Subminiature Design:** It is designed for applications where board space is at a premium. * **Sealed Construction:** The "0F" designation typically refers to the actuator style and sealing. These switches are often process-sealed (using O-rings or ultrasonic welding) to allow for automated soldering and cleaning processes without contaminating the internal contacts. * **Logic Level Switching:** With a rating of 0.4VA, it is intended for "dry circuit" applications (signal level) rather than power switching. * **Gold Contacts:** To ensure high reliability at low currents, the contacts are usually gold-plated to prevent oxidation. --- ### 3. Pinout and Internal Logic As a **DPDT** (Double Pole, Double Throw) switch, the internal layout functions as follows: ```text Position 1: Pole A connects to Pin 1; Pole B connects to Pin 3. Position 2: Pole A connects to Pin 2; Pole B connects to Pin 4. ``` --- ### 4. Common Applications * **Industrial Controls:** Mode selection for handheld devices. * **Medical Equipment:** Adjusting sensitivity or settings on diagnostic tools. * **Telecommunications:** Channel selection or signal routing on PCB boards. * **Consumer Electronics:** On/Off or toggle functions in high-end audio or specialized equipment.