The **LSMT2-3A160-R** is a specific model of a **Tactile Switch** (push-button). These components are widely used in consumer electronics, automotive interfaces, and industrial controls to provide physical feedback to a user when a circuit is closed. --- ## 1. Technical Specifications The part number follows a specific nomenclature that defines its physical and electrical characteristics. | Parameter | Specification | Details | | :--- | :--- | :--- | | **Component Type** | Tactile Switch | Momentary SPST (Single Pole Single Throw) | | **Mounting Type** | SMT / SMD | Surface Mount Technology | | **Actuation Force** | 160 gf | Gram-force required to press the button | | **Dimensions** | ~3.0 x 2.0 mm | Ultra-miniature footprint | | **Height** | ~0.6 mm | Low-profile design | | **Electrical Rating** | 50mA, 12VDC | Maximum load capacity | | **Life Cycle** | 100,000+ cycles | Mechanical durability rating | --- ## 2. Key Features * **Tactile Feedback:** Provides a distinct "click" sensation to the user, confirming the switch has been activated. * **Low Profile:** The "3A" series is designed for space-constrained applications like smartphones, wearables, and remote controls. * **Side-Actuated vs. Top-Actuated:** Depending on the specific sub-series, these are often designed for side-edge mounting to allow for thinner device profiles. * **J-Bend or Gull-Wing Leads:** Optimized for automated PCB assembly (Pick-and-Place). --- ## 3. Terminal Layout and Schematic The device operates as a simple normally-open (NO) switch. ```text [ Schematic ] (1) ----/ ---- (2) Switch ``` * **Pin 1 & 2:** Usually connected to the signal line and ground. * **Housing:** Often grounded to provide ESD (Electrostatic Discharge) protection. --- ## 4. Common Applications 1. **Mobile Devices:** Volume rockers or power buttons on smartphones. 2. **Wearables:** Control buttons on smartwatches or fitness trackers. 3. **Consumer Electronics:** Reset buttons on routers or mode switches on cameras. 4. **Automotive:** Key fobs and steering wheel controls. ---