The **YB225CWCKW01-5D-JB** is a specific part number for a high-quality, illuminated pushbutton switch manufactured by **NKK Switches**. This component belongs to the YB2 Series, known for being panel-sealed and having a tactile feel. Below is a detailed breakdown of its electronic and physical specifications. --- ### 1. Part Number Breakdown The alphanumeric code identifies every specific feature of the switch: | Segment | Meaning | Specification | | :--- | :--- | :--- | | **YB2** | Series | YB2 Series (Panel Seal) | | **25** | Circuit | DPDT (Double Pole, Double Throw) | | **CW** | Actuator Shape | Circular / Round | | **CK** | Mounting Type | Bushing Mount (Panel Mount) | | **W** | Contact Material | Silver Contacts (Power Rated) | | **01** | Terminals | Solder Lug | | **5D** | LED Color | Amber LED | | **JB** | Cap Color/Type | Clear Lens with White Filter/Diffuser | --- ### 2. Electrical Specifications These parameters define the safe operating limits for the switch's internal contacts. * **Contact Rating (Resistive):** * 5A @ 125V AC * 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. * **Switching Action:** **ON-ON (Maintained)**. This means the switch stays in the "pushed" position until pressed again (Latching). --- ### 3. LED / Illumination Details The "5D" suffix indicates the specific lighting characteristics. | Parameter | Specification (Amber LED) | | :--- | :--- | | **Forward Current ($I_F$)** | 20mA | | **Forward Voltage ($V_F$)** | 2.0V (Typical) | | **Reverse Peak Voltage** | 4V | | **Note** | A current-limiting resistor is required if the supply voltage exceeds 2V. | --- ### 4. Physical & Environmental Features * **Sealing:** Rated to **IP65** standards (Dust-tight and protected against water jets). It uses an internal o-ring and a silicone rubber seal. * **Mechanical Life:** 1,000,000 operations minimum. * **Electrical Life:** 100,000 operations minimum. * **Operating Temperature:** $-25^\circ\text{C}$ to $+50^\circ\text{C}$ (with illumination). * **Panel Cutout:** 22.0mm diameter. --- ### Summary Table for Circuitry The **DPDT** configuration allows the switch to control two independent circuits simultaneously. | State | Terminals 1-2 & 4-5 | Terminals 2-3 & 5-6 | | :--- | :--- | :--- | | **Normal (Up)** | CLOSED (ON) | OPEN (OFF) | | **Pushed (Down)** | OPEN (OFF) | CLOSED (ON) |