The **LCS-01-R/K** is a specific series of miniature microswitches (also known as snap-action switches) manufactured by **C&K Components** (now part of Littelfuse). These switches are widely used for detecting presence, limiting travel, or as simple user-interface triggers in industrial and consumer electronics. --- ### Technical Specifications Overview The model designation breaks down into specific electrical and mechanical characteristics. Below is a summary of the typical properties for this series: | Parameter | Specification | | :--- | :--- | | **Contact Rating** | 0.1A @ 125/250 VAC; 0.1A @ 30 VDC | | **Contact Type** | SPDT (Single Pole Double Throw) | | **Operating Force** | 150 grams (standard for -01 variant) | | **Switch Function** | On-Mom (Momentary) | | **Actuator Style** | Lever or Pin Plunger (depending on suffix) | | **Electrical Life** | 10,000 to 100,000 cycles (load dependent) | | **Mechanical Life** | Up to 1,000,000 cycles | --- ### Part Number Breakdown (LCS-01-R/K) Understanding the suffix is critical for identifying the electronic behavior and physical mounting: 1. **LCS**: Series Name (Subminiature Snap-acting Switch). 2. **01**: Current Rating (Logic level/Low current, typically 0.1 Amp gold-plated contacts). 3. **R/K (Actuator/Terminal)**: * **R**: Usually refers to the **Right Angle** PC Thru-hole terminal orientation. * **K**: Often designates the **Actuator type**, specifically a **Short Roller Lever**. --- ### Key Electronic Components & Materials * **Contacts**: Typically made of **Gold alloy** or gold-plated brass. Because this is the "01" (low current) version, gold is used to prevent oxidation and ensure reliability at low voltages (logic levels). * **Housing**: High-temperature Thermoplastic (PBT or PET), usually rated UL 94V-0 for flame retardancy. * **Terminals**: Silver-plated or Gold-plated brass for high solderability. * **Spring Mechanism**: Beryllium copper or stainless steel snap-action spring to ensure rapid contact transfer regardless of actuation speed. --- ### Common Applications Due to its small footprint and high reliability at low currents, the LCS-01-R/K is used in: * **Computer Peripherals**: Mouse buttons or joystick triggers. * **Industrial**: End-of-travel limit switches for small actuators. * **Consumer Goods**: Door sensors for microwaves or small appliances. * **Medical**: Pressure or position sensing in portable devices.