The **M2TT-13-R2/CE** is a high-precision, sub-miniature toggle switch produced by **Nikkai (NKK Switches)**. It is part of the M2 series, specifically designed for PC board mounting where space is limited and reliability is critical. --- ### 1. Technical Specifications The electrical and mechanical characteristics of the M2TT-13-R2/CE are summarized below: | Feature | Specification | | :--- | :--- | | **Circuit Type** | SPDT (Single Pole Double Throw) | | **Switch Function** | ON-OFF-ON (Three-position) | | **Current Rating** | 0.4VA Max @ 28V AC/DC Max (Logic Level) | | **Mounting Type** | Through Hole, Right Angle (Horizontal) | | **Actuator Style** | Standard Bat Lever | | **Contact Material** | Gold-plated Brass or Phosphor Bronze | | **Termination** | PC Pin (Right Angle) | | **Operating Temp** | -30°C to +85°C | --- ### 2. Key Electronic Features #### Logic Level Switching The "R2" designation typically refers to the contact rating. Unlike power switches, this model is designed for **Logic Level** applications. It uses gold-plated contacts to prevent oxidation, ensuring a reliable electrical connection even with very low voltages and currents (micro-amps). #### Right Angle Configuration The "R" in the suffix indicates a **Right Angle** terminal orientation. This allows the switch to be mounted on a PCB while the toggle protrudes through a side panel or enclosure, saving vertical headspace on the board. #### Sealing and Durability * **Anti-Jamming Design:** The internal mechanism is built to protect the contacts if excessive force is applied to the lever. * **Ultrasonic Welding:** The base and housing are often sealed to prevent flux or cleaning solvents from entering the contact area during the soldering process. --- ### 3. Pinout and Circuitry As an **SPDT ON-OFF-ON** switch, it has three pins for the main circuit: 1. **Pin 1:** Terminal A (Active in Position 1) 2. **Pin 2:** Common (Connected to Pin 1 or Pin 3) 3. **Pin 3:** Terminal B (Active in Position 3) * **Center Position:** No connection (OFF). --- ### 4. Typical Applications * **Handheld Instruments:** Due to the sub-miniature footprint. * **Medical Equipment:** Where high reliability and logic-level signals are required. * **Telecommunications:** For mode selection or reset functions on circuit boards. * **Testing & Measurement:** Ideal for compact control panels.