The **M2TT-30-R** is a high-performance, ultra-miniature toggle switch manufactured by **NKK Switches**. It is part of the M2 series, specifically designed for logic-level applications and space-constrained environments. ### 1. Technical Specifications The following table summarizes the key electrical and mechanical characteristics of the M2TT-30-R: | Feature | Specification | | :--- | :--- | | **Circuit** | DPDT (Double Pole Double Throw) | | **Switch Function** | ON-NONE-ON | | **Current Rating** | 0.4VA Max @ 28V AC/DC Max | | **Contact Resistance** | 20 milliohms maximum | | **Insulation Resistance** | 1,000 Megohms minimum @ 500V DC | | **Dielectric Strength** | 500V AC minimum for 1 minute | | **Mechanical Life** | 100,000 operations minimum | | **Terminal Type** | PC Pin (Right Angle) | --- ### 2. Key Electronic Components & Materials The reliability of this part stems from its high-quality construction materials: * **Contacts & Terminals:** The "R" in the part number indicates **Gold over Nickel plating**. Gold is used for logic-level (low power) switching because it prevents oxidation, ensuring a stable connection at very low voltages. * **Housing/Base:** Constructed from **Glass fiber reinforced Polyamide (Diallyl Phthalate)**. This provides high dielectric strength and heat resistance during soldering. * **Actuator:** Typically made of chrome-plated brass or high-strength resin, designed for a tactile "snap" action. * **Sealing:** The M2 series often features an internal O-ring and ultrasonic welding to prevent the entry of flux, solvents, and other contaminants during the cleaning process. --- ### 3. Application Use Cases Because this switch is rated for **0.4VA (Logic Level)**, it is not intended for power-heavy applications like motors or heaters. Instead, it is found in: 1. **Handheld Devices:** Due to its ultra-miniature footprint. 2. **Medical Instrumentation:** Where precision and gold-plated reliability are required. 3. **Telecommunications:** Used for signal routing and mode selection on PCBs. 4. **Audio/Video Equipment:** Used as a toggle for signal processing paths. --- ### 4. Dimensional and Mounting Notes The **"30"** in the part number signifies the **Right Angle PC Mount** orientation. This allows the toggle to be actuated from the side of the board, making it ideal for edge-mounting on a chassis.