The part number **M2TT-NC-R2/N** appears to correspond to a specific configuration of a high-performance, miniature industrial switch (often part of the M2 series by manufacturers like NKK Switches or similar industrial component suppliers). Below is a breakdown of the electronic and mechanical characteristics typically associated with this component. ### 1. Component Overview The M2 series generally refers to **process-sealed miniature toggles** or pushbuttons designed for PC board mounting. These are engineered to withstand automated soldering and cleaning processes. | Feature | Specification (Typical) | | :--- | :--- | | **Switch Type** | Toggle or Pushbutton (Miniature) | | **Contact Material** | Gold over Nickel or Silver | | **Mounting Type** | Through-hole (PC Lead) | | **Sealing** | IP67 Equivalent (Process Sealed) | | **Actuation** | Momentary or Maintained (NC indicates Normally Closed) | --- ### 2. Part Number Breakdown While nomenclature can vary slightly by manufacturer, the code usually breaks down as follows: * **M2**: Series designation (Miniature, process-sealed). * **TT**: Often refers to the actuator type (e.g., Short Toggle or Twin-Terminal). * **NC**: Indicates the contact configuration—**Normally Closed**. The circuit is "on" by default and "off" when the actuator is pressed/flipped. * **R2**: Refers to the terminal spacing or the specific bracket/frame style (e.g., 0.200" terminal spacing). * **/N**: Often indicates a specific finish or a "No-logo" / standard packaging requirement. --- ### 3. Key Electronic Characteristics #### A. Contact Ratings These parts are typically designed for logic-level applications: * **Max Capacity:** 0.4VA maximum @ 28V AC/DC. * **Min Capacity:** 1.0mA @ 10mV. #### B. Environmental Durability * **Operating Temp:** -30°C to +85°C. * **Sealing:** The "Process Sealed" nature means the internal contacts are protected by an O-ring and ultrasonic welding, allowing the entire PCB to be washed after wave soldering without contaminating the contacts. #### C. Mechanical Life * **Electrical Life:** Usually rated for 50,000 to 100,000 cycles. * **Mechanical Life:** Often rated up to 100,000 cycles. --- ### 4. Typical Application Circuit In a Normally Closed (NC) configuration, the switch is used as an interlock or a "break-to-stop" signal. ```cpp // Example: Using an NC Switch for an Emergency Stop Logic if (digitalRead(SWITCH_PIN) == LOW) { // Current is flowing (Normal State) runMotor(); } else { // Circuit is broken (Switch Actuated) stopMotor(); } ``` ---