The **YB16WSKW01** is a specific model of a high-quality push-button switch manufactured by **NKK Switches**. It belongs to the YB series and is known for its durability, tactile feedback, and "Short Body" design. --- ### 1. General Specifications | Feature | Detail | | :--- | :--- | | **Manufacturer** | NKK Switches | | **Product Series** | YB Series | | **Circuit Type** | SPDT (Single Pole Double Throw) | | **Switch Function** | ON-ON (Alternate Action/Latching) | | **Contact Material** | Silver Alloy (indicated by the 'W' suffix) | | **Body Style** | Square, Short Body (Space-saving) | --- ### 2. Electronic Rating & Electrical Characteristics This switch is designed to handle power-level loads. The "K" in the part number indicates it uses high-capacity silver contacts. * **Current Rating:** 3A @ 125V AC or 3A @ 250V AC; 3A @ 30V DC. * **Contact Resistance:** 50 milliohms maximum. * **Insulation Resistance:** 200 megohms minimum @ 500V DC. * **Dielectric Strength:** * 1,000V AC minimum between contacts. * 1,500V AC minimum between contacts and case. * **Electrical Life:** 100,000 operations minimum. --- ### 3. Physical & Mechanical Parts The assembly of the YB16WSKW01 consists of several integrated components: 1. **Housing/Bushing:** Made of heat-resistant resin. The "W" in the code typically signifies a **Water-tight/Splash-proof** seal (IP65 rated), meaning it includes an internal O-ring. 2. **Terminals:** Solder lug terminals. They are epoxy-sealed to prevent the entry of flux or contaminants during assembly. 3. **Latching Mechanism:** Since this is an "Alternate Action" switch, it contains a mechanical hook/cam system that keeps the button depressed until it is pressed a second time. 4. **Contacts:** Moving contact is silver with silver plating, ensuring low resistance and high reliability for power switching. --- ### 4. Part Number Breakdown (Nomenclature) Understanding each segment of **YB16WSKW01**: * **YB**: Series Name (Power rated push-button). * **16**: Frame size/Capacity (16mm). * **W**: Splash-proof / Water-tight construction (IP65). * **S**: Square Body Shape. * **K**: Alternate Action (Push-Push / Latching). * **W**: Silver Contacts (Power Level). * **01**: Solder Lug Terminals. --- ### 5. Application Usage Because of its IP65 rating and silver contacts, this part is commonly used in: * Industrial control panels. * Medical equipment. * Communication peripherals. * Outdoor equipment requiring a seal against dust and water.