The **FVS-B5-R** is an electronic component primarily classified as a **Vertical Surface Mount (SMT) Type Tactile Switch**. These switches are widely used in consumer electronics, automotive interfaces, and industrial controls due to their compact footprint and reliability. --- ### 1. Technical Specifications Below is a breakdown of the key electronic and physical characteristics of the FVS-B5-R: | Feature | Specification | | :--- | :--- | | **Switch Type** | Tactile (Momentary) | | **Mounting Type** | Surface Mount Technology (SMT/SMD) | | **Orientation** | Vertical / Top Actuated | | **Operating Force** | Typically 1.6N to 2.5N (varies by sub-series) | | **Contact Rating** | 50mA @ 12V DC (typical) | | **Contact Resistance** | ≤ 100mΩ | | **Insulation Resistance** | ≥ 100MΩ (100V DC) | | **Travel Distance** | 0.25mm ± 0.1mm | | **Life Expectancy** | 100,000 to 500,000 cycles | --- ### 2. Core Electronic Components The internal structure of the FVS-B5-R consists of several functional layers: 1. **Contact Dome (Metal Shrapnel):** Usually made of stainless steel with silver plating. This provides the "click" feel and bridges the circuit when pressed. 2. **Base (Housing):** High-temperature resistant plastic (LCP or Nylon) designed to withstand Reflow Soldering temperatures. 3. **Terminals:** Lead-frame pins (often silver or gold plated) that provide the electrical connection to the PCB. 4. **Actuator (Stem):** The physical button part that the user presses. 5. **Cover:** A metal shield that protects the internal mechanism and secures the actuator. --- ### 3. Key Features & Applications #### Key Features * **Small Footprint:** Designed for high-density PCB layouts. * **Tactile Feedback:** Provides a clear "click" sensation to the user, confirming the switch has been triggered. * **Durability:** High mechanical life despite its small size. * **Tape & Reel Packaging:** The "R" in the suffix usually denotes "Reel" packaging, making it compatible with high-speed automated pick-and-place machines. #### Common Applications * **Consumer Electronics:** Wearables, remote controls, and smartphones. * **Computing:** Mouse buttons, reset switches on motherboards. * **Automotive:** Dashboard controls, key fobs. * **Industrial:** Interface panels and handheld testing equipment. --- ### 4. Circuit Diagram (Simple) The switch functions as a simple **Single Pole Single Throw (SPST)** Normally Open circuit. ```text [Pin 1] ----/ ---- [Pin 2] (Press) ``` *When the actuator is pressed, the dome collapses and connects Pin 1 to Pin 2.*