The **G3T19AH-R** is a specific model of a sub-miniature toggle switch manufactured by **NKK Switches**. It is part of the G3T series, designed primarily for high-density mounting on printed circuit boards (PCBs). ### 1. General Specifications Below are the primary technical parameters for the G3T19AH-R: | Feature | Specification | | :--- | :--- | | **Manufacturer** | NKK Switches | | **Circuit Type** | SPDT (Single Pole Double Throw) | | **Switch Function** | ON-OFF-ON | | **Current Rating** | 0.4VA Max @ 28V AC/DC Max (Logic Level) | | **Mounting Type** | Surface Mount (SMD) - Right Angle | | **Termination Style** | Gull Wing Leads | | **Operating Temp** | -30°C to +85°C | --- ### 2. Key Electronic & Mechanical Features #### A. Logic Level Application The "0.4VA" rating indicates that this switch is specifically designed for **logic-level circuits**. The contacts are usually gold-plated to ensure reliability when switching very low currents and voltages where arcing does not occur to clean the contacts. #### B. Sealing and Process Compatibility * **Process Sealed:** The G3T series features a fully sealed body construction. This allows the part to withstand automated soldering processes and subsequent washing/cleaning without internal contamination. * **Heat Resistance:** The housing is made of high-heat resistant resin (such as Polyphenylene Sulfide), making it compatible with vapor phase and infrared convection reflow soldering. #### C. Actuator Design * **Toggle Style:** The "AH" in the part number typically denotes the actuator style and the right-angle orientation. * **Anti-Jamming:** The internal mechanism is designed to protect the contacts from high downward force on the toggle. --- ### 3. Terminal Configuration As a **SPDT ON-OFF-ON** switch, it has three active terminals and two support brackets: 1. **Terminal 1:** Path A 2. **Terminal 2:** Common 3. **Terminal 3:** Path B 4. **Center Position:** Open (Disconnected) --- ### 4. Dimensional Drawing Concept Because this is a "Right Angle" surface mount part, the actuator moves parallel to the PCB surface while the leads are bent in a "Gull Wing" shape to sit flat on the board pads. ```text [ Actuator ] | | ______|__|______ | | <-- Switch Body |__[L]__[C]__[L]_| <-- Gull Wing Leads (SMT) ```