The **YB216CWCPG01-05-CB** is a specific part number for a high-quality, illuminated pushbutton switch manufactured by **NKK Switches**. It belongs to the YB2 Series, which is known for its compact design and high reliability. --- ### 1. Technical Specifications Table | Feature | Specification | | :--- | :--- | | **Manufacturer** | NKK Switches | | **Series** | YB2 Series | | **Switch Function** | ON-ON (DPDT - Double Pole Double Throw) | | **Circuitry** | Latching (Push-on, Push-off) | | **Current Rating** | 100mA @ 125V AC / 30V DC (Logic Level) | | **Illumination Type** | LED (Integrated) | | **LED Color** | Red | | **Cap Color/Material** | White/Clear (Polycarbonate) | | **Mounting Type** | Panel Mount, Threaded (16mm hole) | | **Terminal Type** | Solder Lug | | **Ingress Protection** | IP65 (Dust tight, Water resistant) | --- ### 2. Breakdown of the Part Number The alphanumeric code identifies the specific configuration of the switch: * **YB2**: Series identifier (16mm body diameter). * **16**: Electrical capacity (Logic level rating). * **CW**: Special "Splashproof" and "Dust-tight" rating (IP65). * **CP**: Gold contacts (specifically designed for low-power logic signals). * **G**: Round shape. * **01**: Solder lug terminals. * **05**: 5V DC supply for the internal LED. * **CB**: Specific cap and bezel color combination (Red LED / White Cap). --- ### 3. Key Electronic Components #### A. Contact Material (Gold-Plated) Because this model uses "G" (Gold) contacts, it is rated for **Logic Level** applications. Unlike silver contacts, gold does not oxidize, making it ideal for low-current circuits (under 100mA) where a reliable connection is critical for digital signaling. #### B. DPDT Circuitry The **Double Pole Double Throw** configuration means this switch can control two separate electrical circuits simultaneously. This is often used for: * Switching a load and an external indicator light at the same time. * Controlling two different signal paths in a redundant system. #### C. Integrated LED Resistor The "05" designation indicates that the switch is pre-configured with an internal resistor for **5V DC** operation. You can connect it directly to a 5V power source (like an Arduino or industrial PLC) without needing to calculate or solder an external current-limiting resistor for the LED. #### D. Environmental Sealing The **CW** rating means the switch includes an internal rubber seal and an O-ring. This makes it suitable for control panels exposed to moisture, oil, or dust. ---