The **M2TT-2E-R2/BL** is a specific electronic component belonging to the **M2 Series** of miniature toggle switches, manufactured by **Nidec Components** (formerly Copal Electronics). This part is designed for high reliability in signal-level switching and features a distinctive visual and mechanical configuration. --- ### 1. Part Number Breakdown To understand the electronic and mechanical characteristics, we can decode the part number suffix by suffix: | Segment | Meaning | Specification | | :--- | :--- | :--- | | **M2** | Series | M2 Miniature Toggle Switch Series | | **TT** | Type | PC Board Mounted Toggle (Double Pole) | | **2** | Number of Poles | 2-Pole (DPDT) | | **E** | Function | ON - OFF - ON (3-position) | | **R2** | Actuator | Lever/Toggle Style (R2 designated shape) | | **BL** | Color | Blue (Usually refers to the lever or cap color) | --- ### 2. Technical Specifications The electrical characteristics are optimized for logic-level and low-power applications. * **Contact Rating:** * Max: 6A @ 125V AC / 3A @ 250V AC * Min: 10mA @ 5V DC (General range for the series) * **Contact Resistance:** 10 mΩ maximum. * **Insulation Resistance:** 1,000 MΩ minimum (at 500V DC). * **Dielectric Strength:** 1,500V AC for 1 minute. * **Electrical Life:** 25,000 to 50,000 cycles (depending on load). * **Operating Temperature:** -25°C to +85°C. --- ### 3. Physical & Design Features The M2TT-2E-R2/BL is built for durability and PCB integration: 1. **Mounting Style:** Through-hole PC board mounting. 2. **Toggle Action:** The "E" function means it has three positions. The center position is **OFF**, and flipping it to either side connects the respective poles (**ON-OFF-ON**). 3. **Terminal Type:** Straight PCB terminals (though some variants may have right-angle options). 4. **Sealing:** These switches often feature an epoxy-sealed base to prevent flux contamination during the soldering process. --- ### 4. Circuit Diagram (DPDT ON-OFF-ON) As a 2-pole (DPDT) switch with an OFF center, the internal switching logic looks like this: ```text Position 1 (Left): Terminals 2-3 & 5-6 Connected Position 2 (Center): All Terminals Disconnected (OFF) Position 3 (Right): Terminals 2-1 & 5-4 Connected ``` ---