The **M2TT-N1-R2** is a specific model within the **M2 series** of miniature toggle switches, commonly manufactured by companies like **NKK Switches**. This part is designed for PCB (Printed Circuit Board) mounting and is known for its compact size and reliability in logic-level applications. ### 1. Technical Specifications The "M2TT" designation defines the physical and electrical architecture of the switch. | Feature | Specification | |:---|:---| | **Switch Function** | DPDT (Double Pole, Double Throw) | | **Switching Operation** | ON - NONE - ON | | **Current Rating** | 0.4VA Max @ 28V AC/DC Max (Logic Level) | | **Contact Resistance** | 50 milliohms maximum | | **Insulation Resistance** | 1,000 Megohms minimum @ 500V DC | | **Dielectric Strength** | 500V AC minimum for 1 minute | | **Mechanical Life** | 100,000 operations minimum | --- ### 2. Breakdown of the Model Number The suffix codes provide specific details regarding the hardware and mounting style: * **M2TT**: The base series (Miniature Toggle for PCB). * **N1**: Refers to the **Actuator style**. In this series, N1 typically denotes a standard bat-style toggle lever made of chrome-plated brass or plastic. * **R2**: Refers to the **Terminal/Mounting style**. The "R2" usually indicates right-angle PCB mounting with a specific bracket or terminal spacing, allowing the switch to be operated from the side of the board. --- ### 3. Internal Components and Materials To understand the electronic performance, it is essential to look at the internal materials used: * **Contacts:** Usually gold-plated over nickel or silver. The gold plating is critical because this switch is rated for **Logic Level** (low power). Gold prevents oxidation, ensuring a reliable connection even when very little voltage is present. * **Case/Base:** Glass-reinforced polyamide or similar high-temperature plastic (UL94V-0 rated) to withstand wave soldering. * **Movable Contactor:** Beryllium copper with gold plating for high conductivity and flexibility. --- ### 4. Circuit Diagram As a **DPDT** switch, the internal wiring facilitates the switching of two independent circuits simultaneously. ```text [Terminal 2] --- (Common A) --- [Terminal 1 or 3] [Terminal 5] --- (Common B) --- [Terminal 4 or 6] ``` --- ### 5. Common Applications Due to its small footprint and right-angle orientation, the M2TT-N1-R2 is frequently found in: 1. **Handheld Devices:** Where space is limited. 2. **Medical Instrumentation:** For mode selection. 3. **Telecommunications:** For resetting or configuring logic paths. 4. **Test Equipment:** Used as a user-interface toggle on control panels.