The **M2TT-61-R/N** is a specific model of an electronic toggle switch, primarily manufactured by **NKK Switches**. It belongs to the **M2 series**, which is known for its subminiature size and process-sealed construction. --- ### 1. Key Technical Specifications The part number breakdown provides specific details about its electrical and physical properties: | Feature | Specification | |:---|:---| | **Series** | M2 Series (Process Sealed Subminiature Toggles) | | **Circuit Type** | DPDT (Double Pole Double Throw) | | **Switch Function** | ON - NONE - ON | | **Contact Rating** | 0.4VA Max @ 28V AC/DC (Logic Level) | | **Termination Style** | Right Angle PCB Mount (Horizontal) | | **Actuator Style** | Standard Bat Lever | | **Environmental Seal** | IP67 Rated (Dust tight and water immersion) | --- ### 2. Electronic Component Breakdown #### A. Contact Mechanism The "61" designation indicates a **DPDT** configuration. This means the switch controls two separate circuits simultaneously, each having one input and two possible output paths. Because this is an "ON-NONE-ON" switch, it has no center "OFF" position. #### B. Logic Level Gold Contacts The "R" in the suffix typically denotes **Gold-plated contacts**. * **Why Gold?** Unlike silver contacts, gold does not oxidize. This is critical for "logic level" applications (low voltage/low current) where there isn't enough electrical energy to "arc" through oxidation layers. #### C. Process Sealing The "N" suffix (and the M2 series design) indicates the part is **process sealed**. * **Protection:** It features an O-ring at the actuator and an epoxy seal at the base. * **Manufacturing Benefit:** This allows the component to undergo automated wave soldering and high-pressure washing (to remove flux) without internal contamination. --- ### 3. Physical Dimensions & Mounting * **Subminiature Footprint:** Designed for high-density PCB layouts where space is at a premium. * **Right Angle (Horizontal):** The "T" and "6" codes often refer to the terminal orientation. This specific model sits flat on the board with the toggle protruding from the side/edge of the device. --- ### 4. Common Applications Due to its reliability and sealing, the M2TT-61-R/N is commonly found in: 1. **Handheld Devices:** Small medical instruments or testing tools. 2. **Industrial Controls:** Panels that require protection against dust and liquids. 3. **Telecommunications:** Signal switching in networking hardware.