The **M2AS1-A211-R2/Q** is a specific part number typically associated with high-frequency coaxial switches, often used in telecommunications, aerospace, and RF (Radio Frequency) testing environments. This model belongs to a series of Electromechanical Switches designed for signal routing. --- ### 1. Key Technical Specifications Based on the standard nomenclature for this series, here are the primary electronic and mechanical characteristics: | Feature | Specification | | :--- | :--- | | **Switch Type** | SPDT (Single Pole Double Throw) | | **Actuator Type** | Failsafe | | **Connector Type** | SMA (Female) | | **Frequency Range** | DC to 18 GHz (standard for R2 series) | | **Operating Voltage** | 12V DC (typical for 'A' designation) | | **Impedance** | 50 Ohms | | **Termination** | Non-terminated (Open circuit when not connected) | --- ### 2. Breakdown of the Part Number The alphanumeric string defines the internal configuration of the component: * **M2**: Usually refers to the physical housing size or the specific sub-series of the manufacturer. * **AS1**: Indicates the circuit configuration (Single Pole Double Throw). * **A211**: This block typically defines the **Voltage** (A = 12V), the **Actuator Type** (Failsafe vs. Latching), and the **Control Logic** (e.g., TTL compatibility). * **R2**: Defines the frequency rating (up to 18 GHz). * **Q**: This suffix often denotes a "Quick-connect" or a specific quality/reliability screening level (sometimes related to environmental sealing). --- ### 3. Functional Operation * **Failsafe Mechanism:** In this electronic configuration, the switch remains in a "default" position when no power is applied. Once 12V DC is applied to the actuator, the internal contact moves to the second position. If power is lost, it automatically returns to the default state. * **RF Performance:** These parts are engineered for low **Insertion Loss** (minimal signal weakening) and high **Isolation** (preventing signal leakage between ports), which are critical for precision RF circuits. --- ### 4. Common Applications * **Automated Test Equipment (ATE):** Routing signals between a device under test and measurement instruments. * **Satellite Communications:** Switching between primary and redundant signal paths. * **Base Stations:** Managing signal flow in cellular infrastructure.