## Overview of G3T22AP-R The **G3T22AP-R** is a high-quality, ultra-miniature toggle switch manufactured by **NKK Switches**. It is part of the G3T series, specifically designed for surface-mount applications where space is at a premium and high reliability is required. --- ### 1. Technical Specifications The following table outlines the primary electrical and mechanical characteristics of the component: | Characteristic | Specification | | :--- | :--- | | **Circuit Type** | DPDT (Double Pole Double Throw) | | **Switch Function** | ON-ON | | **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 | | **Mechanical Life** | 50,000 Cycles | | **Mounting Type** | Surface Mount (SMD) - Gull Wing | --- ### 2. Key Design Features * **Ultra-Miniature Size:** Its extremely small footprint allows for high-density mounting on Printed Circuit Boards (PCBs). * **Heat Resistant Resin:** The housing is constructed from high-performance resin, allowing it to withstand vapor phase and infrared convection reflow soldering temperatures. * **Twin Crossbar Contact Mechanism:** This is a hallmark of NKK switches. It provides high contact reliability, especially in logic-level circuits, by ensuring a "wiping" action that clears away oxidation. * **Sealed Construction:** The switch is typically sealed to prevent contamination during the soldering and cleaning process (washable). --- ### 3. Terminal and Part Number Breakdown The "AP-R" suffix provides specific information regarding the packaging and terminal style: * **G3T:** Series designation (Ultra-Miniature SMT Process Compatible Toggles). * **22:** Circuit code for DPDT. * **A:** Terminal type (Straight Gull Wing for SMT). * **P:** Contact material (Gold). * **-R:** Packaging code, indicating **Tape & Reel** packaging for automated pick-and-place assembly. --- ### 4. Typical Applications Due to its low-power rating and small size, the G3T22AP-R is commonly found in: * Handheld medical devices. * Telecommunications equipment. * Portable instrumentation. * Control panels requiring logic-level switching.