## Technical Overview of G3T25AH-R The **G3T25AH-R** is a high-quality, subminiature toggle switch manufactured by **NKK Switches**. It is specifically designed for logic-level applications where space on the Printed Circuit Board (PCB) is at a premium. --- ### 1. Key Technical Specifications Below are the primary electrical and mechanical characteristics of the component: | Feature | Specification | | :--- | :--- | | **Switch Function** | DPDT (Double Pole Double Throw) | | **Contact Rating** | 0.4VA Max @ 28V AC/DC Max (Logic Level) | | **Mounting Type** | Through-Hole, Right Angle | | **Actuator Style** | Toggle (Standard) | | **Termination Style** | PC Pin | | **Operating Temp** | -30°C to +85°C | | **Mechanical Life** | 50,000 Operations minimum | | **Sealing** | Fully Sealed (Process Compatible) | --- ### 2. Core Electronic Components & Features The "G3T" series is distinguished by several specific engineering choices: #### A. Logic Level Contact Mechanism Unlike standard power switches, the G3T25AH-R uses **Gold-plated contacts**. Gold is essential for logic-level signals (low voltage/low current) because it prevents oxidation, ensuring a reliable connection even when there is no electrical "arc" to clean the contacts. #### B. Ultra-Subminiature Design The "AH" in the part number indicates a **Right Angle** orientation. This allows the switch to be mounted flat on a PCB while the toggle protrudes from the side of the device, saving vertical headspace. #### C. Process Sealed Construction The housing is constructed to be "process compatible." This means: * It can withstand automated soldering processes. * It is resistant to flux cleaning solvents. * The ultrasonic welding of the housing prevents contaminants from entering the contact area. --- ### 3. Pinout and Circuitry As a **DPDT** switch, the G3T25AH-R has 6 terminals. It operates as an **On-None-On** switch, meaning it has two stable positions with no "Off" center position. ```text DPDT Internal Logic: Pos 1: [1-2] connected, [4-5] connected Pos 2: [2-3] connected, [5-6] connected (Pin 2 and 5 are Common) ``` --- ### 4. Part Number Breakdown * **G3T**: Series Identifier (Ultra-Subminiature Process Sealed Toggle) * **25**: Circuitry Code (DPDT, On-None-On) * **A**: Actuator Type (Short Toggle) * **H**: Terminal Type (Right Angle Through-Hole) * **R**: Packaging (Tray or Specific RoHS compliance marker)