The **SWT8-M2R** is a specific model of a **Tactile Switch** (often referred to as a micro-switch or push-button switch). These components are widely used in consumer electronics, automotive controls, and industrial interfaces to provide a physical "click" sensation and complete an electrical circuit when pressed. --- ### 1. Technical Specifications The SWT8 series typically follows a standard form factor. Below are the common electronic specifications for the M2R variant: | Feature | Specification | | :--- | :--- | | **Type** | Momentary Push Button (SPST) | | **Dimensions** | 6mm x 6mm (Base) | | **Height** | Usually 4.3mm to 5.0mm (depending on stem) | | **Operating Force** | 160gf to 250gf (Gram-force) | | **Contact Resistance** | ≤ 100mΩ | | **Voltage Rating** | 12V DC | | **Current Rating** | 50mA | | **Insulation Resistance**| ≥ 100MΩ (100V DC) | | **Life Expectancy** | 50,000 to 100,000 cycles | --- ### 2. Physical Components The SWT8-M2R consists of four primary internal/external parts: 1. **The Actuator (Stem):** The plastic part you press down on. The "M2R" designation often refers to the specific height and shape of this plunger. 2. **The Cover:** A metal plate that holds the internal components together and protects the mechanism. 3. **Contact Dome:** A snap-action metal disc. When pressed, it collapses to connect the terminals; when released, it springs back (providing the tactile feedback). 4. **Terminals:** Usually 4 pins. Even though there are 4 pins, they are typically connected in pairs, meaning it functions as a Single Pole Single Throw (SPST) switch. --- ### 3. Mounting Style: Through-Hole (DIP) The **M2R** suffix specifically indicates the lead (pin) configuration. * **Through-Hole Technology (THT):** These switches are designed to be inserted into holes on a Printed Circuit Board (PCB) and soldered from the opposite side. * **Snap-in Leads:** The pins are often slightly kinked to allow the switch to "snap" into the PCB holes and stay in place before soldering. --- ### 4. Common Applications Due to its small footprint and reliability, the SWT8-M2R is found in: * **Household Appliances:** Microwave control panels, washing machines. * **Computer Peripherals:** Reset buttons on routers or PC cases. * **Consumer Electronics:** Remote controls, toys, and handheld devices. * **DIY Electronics:** Breadboard prototyping and Arduino/Raspberry Pi projects.