The part number **SW115D15HIMSMF** refers to a high-specification, industrial-grade **RF/Microwave Coaxial Switch**. These components are critical in telecommunications, aerospace, and test-and-measurement environments where signal routing between different paths is required with minimal loss. --- ### 1. Component Overview The SW series typically identifies a **SPDT (Single Pole Double Throw)** electromechanical switch. These devices are designed to route RF signals from one common port to either of two output ports. ### 2. Technical Specifications Below is a breakdown of the likely parameters based on standard naming conventions for this class of microwave switch: | Feature | Specification Details | | :--- | :--- | | **Switch Type** | SPDT (Single Pole Double Throw) | | **Frequency Range** | DC to 15 GHz or 18 GHz (depending on internal trimming) | | **Actuator Type** | Failsafe or Latching (usually "D" signifies 12-15V DC) | | **Voltage** | 12V to 15V DC Operating Voltage | | **Connector Type** | SMA Female (Standard for high-frequency precision) | | **Impedance** | 50 Ohms (Standard RF impedance) | | **Switching Speed** | Typically < 15ms to 20ms | --- ### 3. Key Electronic Characteristics #### A. Insertion Loss and Isolation Because this part operates in the GHz range, it is engineered for: * **Low Insertion Loss:** Minimizing signal power drop as it passes through the switch. * **High Isolation:** Ensuring that the "OFF" port does not leak signal into the active path. #### B. Actuation Mechanism The "D15" in the part number usually refers to the **15V DC drive voltage**. * **Failsafe:** The switch returns to a "default" position when power is removed. * **Latching:** The switch stays in its last position even after power is removed (requires a pulse to change). #### C. Lifecycle and Reliability These parts are rated for millions of cycles. The **"MSMF"** suffix often denotes specific mounting or finishing standards, such as: * **MS:** Microstrip or Specific Mounting flange. * **MF:** Metric Threads or specific Material Finish (e.g., gold plating or passivated stainless steel). --- ### 4. Typical Applications * **Signal Routing:** Switching between two different antennas in a transmitter. * **Automated Test Equipment (ATE):** Routing a device under test (DUT) to different measurement instruments. * **Redundancy Systems:** Switching to a backup signal path if the primary path fails. ---