## Technical Overview of the M2TT-55-R The **M2TT-55-R** is a specific electronic component belonging to the **M2 series** of miniature toggle switches manufactured by **NKK Switches**. It is designed for PCB (Printed Circuit Board) mounting and is characterized by its dual-pole configuration and logic-level reliability. --- ### 1. Key Technical Specifications | Feature | 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 | | **Mounting Type** | Through-hole (PCB) | | **Termination Style** | Right Angle (Horizontal Mount) | | **Actuator Style** | Standard Bat Lever | --- ### 2. Physical & Electronic Characteristics #### A. Contact Mechanism The "R" suffix often denotes the specific plating or terminal orientation. In this series, the contacts are typically **Gold-plated**. This is crucial for "logic level" applications where low voltage and low current are used, as gold prevents oxidation that would otherwise impede a signal. #### B. Right Angle Orientation The "TT" designation indicates a **Right Angle** terminal orientation. This means when the switch is soldered to a PCB, the toggle lever extends horizontally out the side of the board rather than vertically. This is ideal for side-panel controls on electronic enclosures. #### C. Durability and Environmental Specs * **Mechanical Life:** Typically rated for 100,000 operations. * **Electrical Life:** Rated for 50,000 operations at full load. * **Insulation Resistance:** 1,000 Megaohms minimum @ 500V DC. --- ### 3. Application Use Cases Due to its small footprint and gold contacts, the M2TT-55-R is commonly found in: * **Handheld Devices:** Where space is at a premium. * **Audio/Visual Equipment:** For signal routing and mode selection. * **Medical Instrumentation:** Where high reliability in low-power circuits is required. * **Industrial Control Panels:** As a sub-component for PCB-based user interfaces. --- ### 4. Part Number Breakdown | Segment | Meaning | | :--- | :--- | | **M2** | Series Name (Miniature Toggles) | | **TT** | Right Angle Terminal orientation | | **55** | DPDT (Double Pole Double Throw) ON-ON function | | **R** | Gold Contacts / Specific physical variation | ---