The **M2TT-NF-R2/N** is a specific part number belonging to a series of **Tactile Switches** (also known as micro-switches or push-button switches) manufactured by **NKK Switches**. These components are widely used in interface panels, instrumentation, and consumer electronics to provide physical feedback to the user. --- ### 1. Key Technical Specifications The part number encodes specific mechanical and electrical characteristics. Below are the typical technical parameters for this series: | Parameter | Specification | | :--- | :--- | | **Switch Type** | Tactile / Push Button | | **Circuit** | SPDT (Single Pole Double Throw) | | **Switch Function** | On - (On) / Momentary | | **Current Rating** | 1A @ 125V AC / 1A @ 30V DC | | **Terminal Type** | PC Pin (Straight) | | **Actuator Style** | Round, Plunger | | **Operating Force** | ~1.5 - 2.5 N (varies by sub-model) | --- ### 2. Breakdown of the Part Number The alphanumeric code provides details on the build and materials: * **M2T**: Indicates the series (Process Compatible Miniature Pushbuttons). * **T**: Denotes the mounting type (often through-hole). * **NF**: Refers to the actuator/bushing style (typically a standard plunger). * **R2**: Refers to the specific terminal spacing or bracket configuration. * **N**: Usually indicates a specific finish or standard rating (often "N" for silver contacts). --- ### 3. Electronic & Mechanical Features * **Momentary Action:** The "On-(On)" configuration means the switch stays in its default position and only moves to the secondary position while physically depressed. * **Process Compatible:** These switches are often "washable," meaning they are sealed to withstand automated soldering and cleaning processes (using flux removers) without internal damage. * **SPDT Circuitry:** Unlike basic 2-pin tactile switches, this is a 3-pin (or more) setup allowing for "Normally Open" (NO) and "Normally Closed" (NC) logic. * **Gold or Silver Contacts:** Depending on the exact suffix, these use silver (for power) or gold (for logic-level signals) to ensure low contact resistance. --- ### 4. Common Applications * **Industrial Controls:** Used in PLCs or control panels where high reliability is needed. * **Medical Equipment:** Due to the sealed nature of the "Process Compatible" build. * **Audio/Video:** Used for mode selection or triggering in professional gear. * **Test Instruments:** Used in multimeters or oscilloscopes for menu navigation.