The **CFPB-1CC-4O2W** is a specific part number typically associated with the **NKK Switches** CJ series or similar specialized illuminated push-button switches. These components are designed for high-density mounting on Printed Circuit Boards (PCBs). --- ## 1. Component Overview This part is an ultra-miniature, illuminated tactile switch. It is engineered for applications where space is limited but visual feedback and high reliability are required. ### Technical Specifications | Feature | Specification | | :--- | :--- | | **Type** | Tactile Pushbutton Switch | | **Illumination** | LED (Bi-color or Single options available) | | **Mounting Type** | Through-hole (PCB) | | **Circuit Type** | SPST (Single Pole Single Throw) | | **Switch Action** | Momentary (Off-On) | | **Operating Force** | Typically 1.6N ~ 1.8N | | **Terminal Pitch** | Standard 2.54mm (0.100") | --- ## 2. Key Internal Electronic Parts ### A. The Contact Mechanism * **Gold-Plated Contacts:** Usually features gold-plated contacts to ensure high reliability and prevent oxidation, which is critical for low-voltage logic-level signals. * **Tactile Dome:** A precision-engineered metal dome that provides the "click" sensation and completes the electrical circuit when pressed. ### B. Integrated LED * **Light Source:** The "4O2W" suffix often refers to the LED configuration (e.g., Orange/White or specific color wavelengths). * **Polarity:** The LED is electrically isolated from the switch circuit, requiring its own current-limiting resistor on the PCB. ### C. Housing Materials * **Base/Case:** Made of heat-resistant resin (like Polyamide) to withstand wave soldering temperatures. * **Actuator:** A clear or translucent polycarbonate material that diffuses the light from the internal LED. --- ## 3. Terminal Configuration The device typically features 4 to 6 pins depending on the specific sub-model: 1. **Switch Terminals (2 pins):** These close the circuit when the button is depressed. 2. **LED Terminals (2-4 pins):** Dedicated leads for the Anode (+) and Cathode (-) of the internal LED. --- ## 4. Typical Application Circuit When integrating this part, you must treat the switch and the LED as two separate components in your schematic: ```cpp // Logic Diagram [Input Pin] --- [Switch] --- [GND] [VCC] --- [Resistor] --- [LED] --- [GND] ``` ---