The **YB216CWCKG01-5F-JB** is a high-quality, illuminated push-button switch manufactured by **NKK Switches**. It belongs to the YB Series, specifically designed for panel-mount applications requiring durability and visual feedback. ### 1. Technical Specifications Breakdown | Feature | Specification | | :--- | :--- | | **Manufacturer** | NKK Switches | | **Circuit Type** | DPDT (Double Pole Double Throw) | | **Switch Function** | On-On (Alternate Action / Latching) | | **Current Rating** | 0.4VA Max @ 28V AC/DC (Logic Level) | | **Illumination Type** | LED (Green) | | **Cap Color/Style** | Clear Lens, White Filter (JB) | | **Actuator Type** | Round, Flush Mount | | **Termination** | Solder Lug | | **Ingress Protection** | IP65 (Dust Tight, Water Resistant) | --- ### 2. Detailed Part Number Deciphering To understand the electronic components of this specific model, we can break down the SKU: * **YB216**: Series identifier (22.5mm mounting hole, power or logic level). * **CW**: Represents the "Panel Seal" feature, indicating it is splash-proof and dust-tight (IP65). * **CK**: Designates a Round shape with a Flush mount bushing. * **G**: Indicates **Gold Contacts**. This is crucial for "Logic Level" applications (low voltage/current) to prevent oxidation. * **01**: Standard silver/gold solder lug terminals. * **5F**: Specifies the LED voltage and color (5V Green LED). * **JB**: The cap aesthetics—Clear lens with a White diffuser. --- ### 3. Key Electronic Components #### A. Contact Mechanism (Gold-Plated) Unlike standard power switches, the "G" rating signifies gold over nickel plating. This is designed for dry circuits (low energy). Gold does not corrode, ensuring a reliable connection even when the voltage is too low to "arc" through oxidation. #### B. DPDT Circuitry As a **Double Pole Double Throw** switch, it contains two separate sets of terminals controlled by one actuator. This allows you to: 1. Control two independent circuits simultaneously. 2. Switch a single device between two different power sources or paths. #### C. Integrated LED (5F) The switch contains a built-in Green LED. Because this model is rated for 5V, it typically includes an internal resistor or is designed to interface directly with 5V logic systems without requiring external current-limiting components in standard configurations. #### D. Latching Mechanism This is an **"Alternate Action"** switch. When pressed, it stays down (latched) until pressed again to release. This is ideal for power-on/off functions rather than momentary signaling.