## G3T25AB-R Electronic Component Overview The **G3T25AB-R** is a high-quality, subminiature toggle switch manufactured by **NKK Switches**. It is specifically designed for logic-level applications and is widely used in the PCB (Printed Circuit Board) industry due to its compact size and reliability. --- ### 1. Key Technical Specifications | Feature | Specification | | :--- | :--- | | **Manufacturer** | NKK Switches | | **Switch Function** | DPDT (Double Pole Double Throw) | | **Contact Timing** | Non-Shorting (Break-before-make) | | **Mounting Type** | Surface Mount (SMT), Right Angle | | **Contact Rating** | 0.4VA Max @ 28V AC/DC Max | | **Mechanical Life** | 50,000 Operations minimum | | **Electrical Life** | 50,000 Operations minimum | | **Operating Force** | 0.8N to 4.0N | --- ### 2. Physical Design and Packaging * **Actuator Style:** It features a standard toggle lever, but in a subminiature form factor suitable for hand-held or space-constrained devices. * **Terminal Type:** Right-angle surface mount terminals. This allows the toggle to be operated from the side of the PCB, which is ideal for edge-mounting on devices. * **Sealing:** The device is typically **washable**. It utilizes an ultrasonic welding process for the housing and an epoxy seal at the base to prevent flux or cleaning solvents from entering the contact mechanism. * **Packaging ("-R"):** The suffix **-R** indicates that the parts are supplied in **Tape and Reel** packaging, designed for automated pick-and-place assembly lines. --- ### 3. Materials and Construction The internal electronics are optimized for low-power signal switching: 1. **Contacts:** Usually gold-plated over nickel or silver. Gold is essential here because the switch operates at "Logic Level" (0.4VA), where there isn't enough voltage/current to break through surface oxidation that occurs on other metals. 2. **Case:** Heat-resistant resin, allowing the part to withstand infrared (IR) convection and vapor phase reflow soldering temperatures. 3. **Toggle:** High-strength polyester or similar thermoplastic. --- ### 4. Typical Applications Due to its small footprint and DPDT configuration, the G3T25AB-R is commonly found in: * **Telecommunications:** Handheld testers and networking equipment. * **Medical Equipment:** Portable diagnostic tools. * **Computing:** Logic switching on motherboards or peripheral cards. * **Industrial Controls:** Small-scale parameter setting or mode selection.