The **FNS-C5W-R** is a specific electronic component typically identified as a **tactile switch** (or push-button switch) produced by manufacturers like **Fujisoku** (now part of Nidec Components). These parts are commonly used in control panels, instrumentation, and consumer electronics. --- ### 1. Technical Specifications Below are the general technical parameters for the FNS series, specifically the C5W-R variant: | Parameter | Specification | | :--- | :--- | | **Switch Type** | Tactile / Momentary Push Button | | **Circuit Type** | SPST (Single Pole Single Throw) | | **Mounting Type** | Through-Hole (PC Pin) | | **Contact Rating** | Usually 50mA @ 12VDC - 24VDC | | **Operating Force** | 1.57N (approx. 160gf) | | **Actuator Style** | Plunger / Square (typically for cap attachment) | | **Illumination** | Non-Illuminated (standard for "C" series) | | **Terminal Pitch** | Standard 5.08mm or 2.54mm grid | --- ### 2. Key Features * **Tactile Feedback:** Provides a distinct "click" sensation to the user, confirming the switch has been actuated. * **Durability:** Designed for high-frequency use, often rated for 100,000 to 1,000,000 cycles. * **Compact Footprint:** Ideal for high-density PCB (Printed Circuit Board) designs. * **Washable/Sealed (Optional):** Some variants in this series feature a sealed structure to allow for wave soldering and cleaning processes. --- ### 3. Part Number Breakdown While manufacturer codes vary slightly, the "FNS" series usually follows this logic: 1. **FNS:** Series identifier (Tactile Switch). 2. **C5:** Refers to the physical dimensions and terminal configuration. 3. **W:** Often indicates a specific terminal style (e.g., right-angle or straight) or environmental sealing. 4. **R:** Typically stands for **RoHS Compliance** or specific packaging (like Reel/Tray). --- ### 4. Common Applications * **Industrial Equipment:** Reset buttons or mode selection switches. * **Audio/Visual:** Interface controls on mixers or amplifiers. * **Computing:** Peripheral input buttons. * **Appliances:** Control panels for microwave ovens or washing machines. --- ### 5. Wiring Diagram (SPST-NO) The switch operates as "Normally Open" (NO). When the button is pressed, the circuit is completed. ```text [ Terminal 1 ] ----/ ---- [ Terminal 2 ] ^ (Press to Close) ```