The **LCS-02-R** refers to a high-quality **Miniature Snap-Action Switch** (often called a microswitch) manufactured by **C&K** (now part of Littelfuse). These components are widely used in industrial and consumer electronics for sensing position or providing user feedback. --- ## 1. Technical Specifications The electrical characteristics are critical for determining the switch's compatibility with a circuit. | Parameter | Specification | | :--- | :--- | | **Contact Form** | SPDT (Single Pole Double Throw) | | **Switch Function** | On-Mom (On-Momentary) | | **Current Rating** | 0.1A to 5A (model dependent) | | **Voltage Rating (AC)** | 125V / 250V AC | | **Operating Force** | 150g (standard for LCS series) | | **Termination Style** | Right Angle PC Pin (The "R" in the suffix) | | **Actuator Style** | Pin Plunger | --- ## 2. Pin Configuration (SPDT) The LCS-02-R features three primary terminals that allow it to be used in two different states: 1. **COM (Common):** The input terminal where the power or signal enters. 2. **NC (Normally Closed):** The circuit is complete when the switch is at rest. 3. **NO (Normally Open):** The circuit is completed only when the plunger is depressed. --- ## 3. Key Electronic Features ### A. Snap-Action Mechanism Unlike a standard toggle switch, the "Snap-Action" mechanism uses a spring-loaded internal leaf. When the actuation point is reached, the contacts "snap" into the new position almost instantaneously, regardless of how slowly the external plunger is pushed. This reduces **arcing** and ensures a clean electrical signal. ### B. Right-Angle PC Terminals The **-R** suffix signifies the physical orientation of the pins. These are designed for **Through-Hole Mounting** on a Printed Circuit Board (PCB) where the switch body sits perpendicular to the board. This is ideal for side-mounted buttons on enclosures. ### C. Low-Level Switching Depending on the contact material (Silver or Gold plating options), the LCS series can be used for: * **Power Switching:** Handling small motors or lights (Silver contacts). * **Logic Level Switching:** Handling microchip signals where very low voltage and current are used (Gold contacts). --- ## 4. Typical Applications * **Computer Peripherals:** Used in high-end mouse buttons or printer paper-jam sensors. * **Industrial:** Limit switches for small CNC machines or 3D printers. * **Consumer Goods:** Door interlocks for microwave ovens or safety switches in small appliances.