The **M2TT-70-R** is a specific part number typically associated with **M2 series toggle switches** (often manufactured by companies like NKK Switches). These are miniature, logic-level toggle switches designed for PC board mounting. ### 1. Key Technical Specifications The "M2TT" series is defined by its compact size and reliability in low-power applications. | Feature | Specification | | :--- | :--- | | **Switch Type** | Toggle Switch | | **Circuitry** | DPDT (Double Pole, Double Throw) | | **Switch Function** | ON-ON | | **Current Rating** | 0.4VA Max @ 28V AC/DC Max (Logic Level) | | **Terminal Type** | Right Angle PC Terminals | | **Actuator Style** | Standard Bat Lever / Toggle | | **Mounting Type** | Through-hole (PCB) | --- ### 2. Physical & Material Composition The electronic and mechanical parts of this switch are engineered for longevity and signal integrity: * **Contacts:** Usually gold-plated over nickel or silver. Gold is used specifically because these are "logic level" switches; gold prevents oxidation, ensuring a reliable connection even at very low voltages. * **Case/Base:** Glass-reinforced polyamide or diallyl phthalate (DAP) resin. These materials are high-heat resistant, allowing the part to withstand wave soldering. * **Actuator:** Chrome-plated brass or molded plastic, depending on the specific sub-variation. * **Terminals:** Epoxy sealed to prevent flux, solvents, and other contaminants from entering the switch mechanism during soldering. --- ### 3. Circuit Configuration (DPDT) As a **DPDT** (Double Pole, Double Throw) switch, the M2TT-70-R controls two separate circuits simultaneously. Each "pole" has a common terminal that can be switched between two different output paths. ```text Circuit 1 Circuit 2 [Terminal 1] [Terminal 4] | | [Common 2] <-----> [Common 5] (Linked Actuator) | | [Terminal 3] [Terminal 6] ``` --- ### 4. Common Applications Because this switch is rated for **0.4VA (Logic Level)**, it should **not** be used for switching power mains (110V/220V). It is designed for: * Handheld medical devices. * Telecommunications equipment. * Control panels for industrial automation. * Reset or mode-selection switches on printed circuit boards. ---