The **M2AS1-5422-R** is a specific part number belonging to the **M2 series of RF Coaxial Connectors**, typically manufactured by companies like **Noble** or specialized RF component suppliers. It is a surface-mount (SMT) miniature coaxial switch connector, commonly used in mobile devices for signal testing. --- ### 1. Key Technical Specifications The following table outlines the typical electrical and physical characteristics of this component series: | Parameter | Specification | | :--- | :--- | | **Type** | RF Coaxial Switch (Manual/Probe type) | | **Frequency Range** | DC to 6 GHz | | **Impedance** | 50 Ohms | | **V.S.W.R.** | 1.2 Max (DC to 3GHz), 1.3 Max (3GHz to 6GHz) | | **Insertion Loss** | 0.1 dB Max (DC to 3GHz), 0.2 dB Max (3GHz to 6GHz) | | **Durability** | ~500 Cycles (Mating/Unmating) | | **Mounting Type** | Surface Mount Technology (SMT) | --- ### 2. Physical Construction The part is designed to be as small as possible to save PCB real estate. * **Housing:** High-temperature thermoplastic (LCP), capable of withstanding lead-free reflow soldering temperatures. * **Contacts:** Copper alloy with Gold (Au) plating to ensure low contact resistance and prevent oxidation. * **Shielding:** Metal shell (usually brass or phosphor bronze with gold/silver plating) to minimize EMI and signal leakage. --- ### 3. Functional Mechanism The "Switch" functionality is the most critical aspect of the M2AS series: 1. **Normal State (Internal Circuit):** When no probe is inserted, the internal spring contact closes the circuit, allowing the signal to pass from the internal antenna to the RF circuit. 2. **Bypass State (Testing):** When an external measurement probe is inserted into the connector, the probe mechanically pushes the internal spring contact. This **breaks** the internal connection and redirects the RF signal to the test equipment (like a Network Analyzer). --- ### 4. Applications The M2AS1-5422-R is predominantly found in high-density wireless electronics: * **Mobile Phones:** For factory calibration and final RF testing. * **Wireless Modules:** Wi-Fi, Bluetooth, and 5G modules. * **IoT Devices:** Ensuring antenna performance during the assembly process. --- ### 5. Footprint Example (Generic SMT) ```c // Layout Note for M2AS Series: // Ensure the center pad is isolated from the ground plane // to prevent signal shorting. [Top View Diagram Concept] _______ | [1] | <-- Signal In ___| |___ [G] | (O) | [G] <-- (O) is the probe entry point |_______| [G] are Ground Solder Pads [2] <-- Signal Out ``` ---