The part number **M2TS-1A-R2/BN** refers to a high-quality toggle switch, typically manufactured by companies like **NKK Switches**. Below is a detailed technical breakdown of its electronic components and specifications. ### 1. Component Overview The **M2 series** consists of process-sealed, subminiature toggle switches designed for PC board mounting. These switches are known for their reliability in harsh environments and their ability to withstand automated soldering and washing processes. ### 2. Technical Specifications | Feature | Specification | | :--- | :--- | | **Series** | M2 Series (Process Sealed Subminiature) | | **Circuit / Pole** | SPST (Single Pole Single Throw) | | **Switch Function** | ON - OFF | | **Current Rating** | 0.1A @ 28V AC/DC (Logic Level) | | **Terminal Type** | Right Angle PC Mount | | **Actuator Type** | Standard Bat Lever (approx. 5.1mm) | | **Contact Material** | Gold over Nickel (typically) | | **Mechanical Life** | 100,000 cycles minimum | --- ### 3. Key Electronic Characteristics #### A. Contact Mechanism The switch utilizes a **STC (Sliding Twin Crossbar)** contact mechanism. This design provides: * **Self-cleaning action:** Wipes the contact surfaces clean with every actuation. * **High Reliability:** Specifically engineered for logic-level applications where voltage/current is too low to "burn off" oxidation. #### B. Environmental Sealing The "Process Sealed" designation means the component features: * An **ultrasonic welded housing** and epoxy-sealed terminals. * Protection against flux, solvents, and cleaning agents used during automated PCB assembly. * An internal O-ring to prevent contaminants from entering the actuator area. #### C. Mounting Configuration (/BN suffix) The suffix often denotes specific packaging or mounting variations. In this context: * **R2:** Indicates a right-angle orientation, meaning the toggle moves parallel to the PC board while the pins are inserted vertically. * **BN:** Often refers to the bushing type (threaded vs. smooth) or a specific nickel-plated finish on the hardware. ### 4. Terminal Layout (Schematic) ```text [ OFF ] [ ON ] (Open Circ) (Closed Circ) ( ) ( ) | | [Pin 1] [Pin 2] ``` --- ### 5. Common Applications * **Handheld Instruments:** Due to the subminiature footprint. * **Medical Equipment:** Where reliability and sealing against fluids are necessary. * **Telecommunications:** Used for internal logic switching or reset functions. * **Industrial Controls:** Integrated into dense control panels.