The **KSBS-3B-R** is an electronic component primarily classified as a **Tactile Switch** or a **Push Button Switch**. It is commonly used in consumer electronics, automotive controls, and industrial interfaces. --- ### 1. Key Technical Specifications The following table outlines the typical electrical and mechanical properties of the KSBS-3B-R: | Parameter | Specification | | :--- | :--- | | **Contact Arrangement** | SPST (Single Pole Single Throw) | | **Circuitry** | Normally Open (NO) | | **Rated Voltage** | 12V DC (Typical) | | **Rated Current** | 50mA | | **Contact Resistance** | ≤ 100mΩ | | **Insulation Resistance** | ≥ 100MΩ (at 100V DC) | | **Operating Force** | 160gf to 250gf (varies by sub-model) | | **Travel Distance** | ~0.25mm | | **Mounting Type** | Surface Mount (SMD / SMT) | --- ### 2. Physical Design and Dimensions The "3B" designation often refers to the specific package size or physical footprint. * **Form Factor:** It is a compact, low-profile switch designed for space-constrained PCB layouts. * **Terminals:** Usually features gull-wing or J-bend leads for automated SMT soldering. * **Actuator:** A soft or hard stem (depending on the "R" suffix variant) designed for finger actuation or overlay interaction. --- ### 3. Deciphering the Part Number While nomenclature varies slightly between manufacturers (such as Kingbright or generic switch suppliers), the code generally breaks down as follows: * **KSBS:** Series identifier (Tactile Switch Series). * **3B:** Size/Housing code (often indicating a 3x3mm or specific rectangular footprint). * **R:** Usually indicates **Tape and Reel** packaging (for automated pick-and-place machines) or a **Right-Angle** mounting orientation. --- ### 4. Common Applications Due to its reliability and small size, this component is found in: 1. **Consumer Electronics:** Power buttons on smartphones, volume rockers, or camera shutters. 2. **Home Appliances:** Control panels for microwaves, washing machines, and coffee makers. 3. **Peripheral Devices:** Computer mice, keyboards, and handheld gaming consoles. 4. **Industrial:** Reset switches on embedded system boards. --- ### 5. Soldering and Handling * **Reflow Soldering:** Designed to withstand standard lead-free reflow profiles (approx. 260°C peak). * **ESD Sensitivity:** As a mechanical switch, it is relatively robust against Electrostatic Discharge, but the surrounding circuitry should be protected.