The **YB225CWCKG01-5D-FB** is a high-quality, professional-grade illuminated pushbutton switch manufactured by **NKK Switches**. It belongs to the YB2 series, specifically designed for panel-mount applications requiring durability and a tactile, high-end feel. --- ## 1. Technical Specifications Breakdown The part number provides a detailed roadmap of the component's electrical and physical properties: | Feature | Specification | Description | | :--- | :--- | :--- | | **Circuit Type** | DPDT | Double Pole, Double Throw (controls two circuits) | | **Switch Function** | ON-ON | Latching/Maintained (stays in position when pressed) | | **Rating (Logic Level)** | 0.4VA Max @ 28V AC/DC | Gold contacts for low-energy, logic-level circuits | | **Illumination** | LED (Amber) | 5D code indicates a 2V Amber LED | | **Cap Style/Color** | Round / White & Green | FB code indicates a Green cap with a White filter | | **Termination** | Solder Lug | Standard epoxy-sealed terminals | | **Bushing/Seal** | Panel Seal | IP65 rated (Dust tight and protected against water jets) | --- ## 2. Key Electronic Components ### A. Contact Mechanism (The "K" Factor) The "G" in the part number indicates **Gold Contacts**. Unlike silver contacts, which are better for high-power arcing, gold contacts are ideal for "Logic Level" applications (low voltage/low current). They prevent oxidation, ensuring signal integrity over millions of cycles. ### B. Internal LED (The "5D" Component) This switch features a built-in Amber LED. * **Voltage:** Typically requires ~2.0V. * **Current:** Standard operating current is ~20mA. * **Note:** This is a discrete LED; you must use an external current-limiting resistor if your supply voltage exceeds the LED's forward voltage. ### C. Sealing and Durability The **"CW"** designation indicates it is a **Panel Seal** model. * It includes an O-ring and a rubber hexagonal nut. * It meets **IP65 standards**, making it suitable for industrial control panels or medical equipment exposed to liquids. --- ## 3. Physical Dimensions & Mounting | Parameter | Value | | :--- | :--- | | **Panel Cutout** | 16.0mm (.630") diameter | | **Total Length** | Approx. 33.5mm (including terminals) | | **Actuation Force** | 2.55 Newtons | | **Mechanical Life** | 1,000,000 operations minimum | --- ## 4. Typical Applications * **Industrial Controls:** Status indicators for automated machinery. * **Audio/Video Gear:** High-end switching for mixers or control surfaces. * **Medical Equipment:** Due to the IP65 rating and reliable logic-level switching. ---