The **KEPA-43MB-R** is a specific electronic component typically identified as a **Tactile Switch** (also known as a momentary push-button switch). These are widely used in consumer electronics, automotive interfaces, and industrial controls for user input. Below is a detailed breakdown of its technical specifications and characteristics. --- ### 1. General Specifications Tactile switches like the KEPA-43MB-R are designed to provide physical "click" feedback to the user when a circuit is completed. | Parameter | Typical Value / Description | | :--- | :--- | | **Type** | Tactile Switch (Momentary) | | **Mounting Type** | SMT (Surface Mount Technology) | | **Circuit Configuration** | SPST-NO (Single Pole Single Throw - Normally Open) | | **Actuation Force** | Usually ranges from 160gf to 250gf | | **Termination Style** | Gull-wing or J-bend leads | | **Operating Life** | 100,000 to 500,000 cycles | --- ### 2. Physical Characteristics The "43" in many naming conventions refers to the physical dimensions, while "MB" and "R" often denote specific button heights or packaging methods. * **Compact Footprint:** Designed for high-density PCB layouts. * **Actuator Height:** The plunger height is optimized for integration with external plastic keycaps or direct finger contact. * **Feedback:** Provides a sharp, clear tactile snap, indicating that the switch has been successfully engaged. --- ### 3. Electrical Ratings While specific to the manufacturer's datasheet, standard ratings for this class of switch include: * **Voltage Rating:** Max 12V DC to 24V DC. * **Current Rating:** Max 50mA. * **Contact Resistance:** < 100mΩ (initial). * **Insulation Resistance:** > 100MΩ at 100V DC. --- ### 4. Common Applications Due to its reliability and small size, the KEPA-43MB-R is found in: 1. **Consumer Electronics:** Remote controls, microwave panels, and smart home hubs. 2. **Computing:** Reset buttons or power buttons on motherboards and peripherals. 3. **Medical Devices:** Control panels for portable diagnostic equipment. 4. **Automotive:** Dashboard buttons and infotainment controls. --- ### 5. Packaging (The "R" Suffix) In electronic component nomenclature, the **"R"** suffix frequently stands for **Tape and Reel**. * This means the parts are supplied on a continuous plastic strip wound onto a reel. * This format is essential for high-speed automated **Pick-and-Place** assembly machines.