The **M2TT-N1-R** is a specific model of a miniature toggle switch, commonly manufactured by **NKK Switches**. It belongs to the M2 series, which is known for its high reliability and "logic level" performance. --- ### 1. Part Number Breakdown To understand the electronic capabilities, we can decode the part number suffix by suffix: | Segment | Meaning | Description | | :--- | :--- | :--- | | **M2** | Series | Process-sealed miniature toggles. | | **TT** | Actuator | Standard Bat Lever (approx. 10.5mm height). | | **N1** | Circuit/Function | **SPDT** (Single Pole Double Throw) - ON-NONE-ON. | | **R** | Terminals | Right Angle PC (Printed Circuit) Mount. | --- ### 2. Electrical Specifications These parts are designed primarily for **logic-level** switching rather than high-power AC applications. * **Contact Rating:** 0.4VA maximum @ 28V AC/DC maximum. * **Contact Resistance:** 50 milliohms maximum. * **Insulation Resistance:** 500 Megohms minimum @ 500V DC. * **Dielectric Strength:** 500V AC minimum for at least one minute. * **Mechanical Life:** 100,000 operations minimum. --- ### 3. Key Electronic Features #### A. Logic Level Application Unlike standard switches that use silver contacts, the "R" and "G" variants of this series typically use **gold-plated contacts**. Gold is used because it does not oxidize, ensuring a reliable connection when switching very low currents (milliamps) where there is no "arc" to burn off oxidation. #### B. Process Sealed Construction The "M2" series features a **totally sealed body**. * **Electronic benefit:** This allows the PCB to be subjected to automated wave soldering and full-immersion cleaning processes without flux or contaminants entering the switch mechanism. * **Construction:** Usually involves an ultrasonic welding of the case and epoxy sealing at the base of the terminals. #### C. Mounting Configuration The **N1-R** designation indicates a right-angle orientation. This is used when the toggle needs to protrude through a side panel while the switch body is soldered flat onto a horizontal PCB. --- ### 4. Typical Wiring Diagram (SPDT) ```text [Terminal 2 - Common] / / [Term 1] [Term 3] Position 1: Terminals 2 & 3 connected. Position 2: Terminals 2 & 1 connected. ```