The **G3B25AP-R-XA** is a high-quality, subminiature push-button switch manufactured by **NKK Switches**. It belongs to the **G3B series**, which is specifically designed for surface-mount (SMD) applications and process-sealed environments. --- ## 1. Technical Specifications The following table highlights the core electrical and physical characteristics of the component: | Feature | Specification | | :--- | :--- | | **Circuit** | DPDT (Double Pole Double Throw) | | **Switch Function** | On-(On) / Momentary | | **Current Rating** | 0.4VA Max @ 28V AC/DC Max | | **Contact Resistance** | 80 mΩ Max | | **Insulation Resistance** | 500 MΩ Min @ 500V DC | | **Dielectric Strength** | 500V AC for 1 minute | | **Operating Force** | 2.04 N (Newton) | | **Mechanical Life** | 50,000 Cycles | --- ## 2. Key Features and Design ### Terminal and Mounting * **SMD (Surface Mount Device):** The "AP" suffix indicates a straight terminal configuration for surface mounting. * **Gull-wing Terminals:** Designed for easy soldering and inspection on printed circuit boards (PCBs). ### Process Sealing * The switch is **fully sealed**. This allows the component to withstand automated soldering processes and rigorous washing/cleaning cycles without compromising the internal contact mechanism. ### Logic Level Switching * The device uses **gold-plated contacts**. This makes it ideal for "logic level" applications where low voltage and low current are used, as gold prevents oxidation that could interfere with signal integrity. ### Actuator and Cap * **-XA Suffix:** This indicates the inclusion of a black 8mm diameter snap-on cap, providing a larger surface area for the user to press compared to the bare plunger. --- ## 3. Part Number Breakdown | Segment | Meaning | | :--- | :--- | | **G3B** | Series Name (Subminiature SMT Pushbuttons) | | **25** | Circuit Type (DPDT) | | **AP** | Terminal Type (Straight PC/SMD) | | **-R** | Packaging (Tape & Reel) | | **-XA** | Cap Style/Color (Black 8mm Cap) | --- ## 4. Typical Applications * **Telecommunications:** Network equipment and handheld devices. * **Medical Equipment:** Portable diagnostic tools requiring sealed components. * **Industrial Controls:** High-density control panels. * **Computing:** Logic-level reset or input buttons on motherboards.