The **YB216CWCKG01-12-JS** is a high-quality, illuminated pushbutton switch manufactured by **NKK Switches**. It belongs to the YB Series and is specifically designed for panel-mount applications requiring environmental protection and visual feedback. --- ## 1. Technical Specifications Below are the core electrical and physical parameters for this component: | Feature | Specification | | :--- | :--- | | **Circuit Type** | DPDT (Double Pole Double Throw) | | **Switch Function** | ON-ON (Maintained/Latching) | | **Current Rating** | 0.4VA Max @ 28V AC/DC (Logic Level) | | **Contact Material** | Gold Plated (ensures reliability at low power) | | **Illumination** | LED (12V DC input) | | **Illumination Color** | Yellow LED / Silver Cap with Yellow Insert | | **Ingress Protection** | IP65 (Dust tight and water-jet resistant) | | **Mounting Type** | Panel Mount, Threaded (16mm hole) | --- ## 2. Component Breakdown The part number can be decoded into several functional sections: ### Electrical Contacts (DPDT) The **DPDT** configuration means the switch controls two separate circuits simultaneously. Each circuit has a "normally open" and "normally closed" contact. Because this is a **Logic Level** switch (0.4VA), it is intended for signaling or controlling microcontrollers/relays rather than driving heavy motors or high-wattage lights directly. ### Actuation and Housing * **Latching Mechanism:** Unlike a momentary doorbell switch, this "ON-ON" switch stays in the position it is pressed until pressed again. * **CW (Customizable/Circular):** Indicates the round bezel shape. * **CKG:** Refers to the gold contact material, which prevents oxidation in low-voltage applications. ### Illumination System * **12-JS:** This suffix indicates a **12V LED**. The "J" typically refers to the clear/yellow filter, and "S" refers to the metallic-style cap finish. It provides a circular ring of light or a fully illuminated face depending on the specific cap insert style. --- ## 3. Wiring Diagram Overview While specific pinouts should be verified via the NKK datasheet, the general layout for a YB series illuminated switch includes: 1. **Terminal 1, 2, 3:** Pole A (Common, NC, NO). 2. **Terminal 4, 5, 6:** Pole B (Common, NC, NO). 3. **(+) and (-) Terminals:** Dedicated pins for the 12V LED. ---