The **M2TT-2G-R/N** is a specific model of a miniature toggle switch manufactured by **NKK Switches**. It belongs to the **M2 series**, which is known for its process-sealed construction and reliability in PC board applications. --- ### 1. Technical Specifications Below are the primary electronic and mechanical characteristics of the M2TT-2G-R/N: | Parameter | Specification | |:---|:---| | **Switch Type** | Toggle Switch | | **Circuit Configuration** | DPDT (Double Pole Double Throw) | | **Switch Function** | ON - NONE - ON | | **Current Rating** | 0.4VA Max @ 28V AC/DC Max (Logic Level) | | **Contact Resistance** | 20 milliohms maximum | | **Insulation Resistance** | 1,000 Megohms minimum @ 500V DC | | **Dielectric Strength** | 1,000V AC minimum between contacts | | **Mechanical Life** | 100,000 operations minimum | --- ### 2. Part Number Breakdown To understand the electronic capabilities, we can deconstruct the model code: - **M2**: Series identifier (Process Sealed Miniature Toggles). - **T**: Toggle Actuator. - **T**: Bracketed PC Mount (denotes the mounting style). - **2**: DPDT (Double Pole, Double Throw) circuit. - **G**: Gold contacts (specifically designed for **Logic Level** applications). - **R**: Right Angle PC Terminals. - **N**: Standard actuator/bushing option. --- ### 3. Key Design Features #### A. Logic Level Contacts (Gold) The "G" in the part number signifies gold-plated contacts. Unlike silver contacts which require a "power" arc to stay clean, gold contacts are used for low-energy circuits (Logic Level) to prevent oxidation and ensure signal integrity at very low voltages. #### B. Process Sealed Construction The switch is designed to withstand automated soldering and washing processes. It features: * **Ultrasonic Welding:** The base and cover are welded to prevent flux or cleaning solvents from entering the contact area. * **O-ring Seals:** Internal O-rings around the actuator prevent liquid ingress. #### C. Right Angle Mounting The "R" indicates that the terminals are bent at a 90-degree angle. This allows the toggle to be operated from the side of a Printed Circuit Board (PCB), which is ideal for rack-mounted equipment or slim electronic enclosures. --- ### 4. Typical Applications * **Telecommunications:** Signal switching in networking gear. * **Medical Equipment:** Control interfaces for diagnostic tools. * **Handheld Devices:** Power or mode selection in battery-operated instruments. * **Industrial Controls:** Logic-level switching in PLC modules. ---