The part number **M2TS-7B-R/BN** refers to a specific configuration of a high-frequency, miniature electromechanical coaxial switch, typically manufactured by companies like **Teledyne Relays** or similar RF component specialists. These components are used to route Radio Frequency (RF) signals between different paths with high precision and low loss. --- ### 1. Part Number Breakdown (Typical) While internal manufacturer codes vary, the nomenclature generally follows this logic: | Segment | Meaning | Description | | :--- | :--- | :--- | | **M2** | Series Prefix | Indicates a miniature, high-frequency electromechanical relay. | | **TS** | Switch Type | Usually stands for **Transfer Switch** (DPDT configuration). | | **7** | Frequency Range | Often denotes capability up to **7 GHz** or a specific high-frequency tier. | | **B** | Coil Voltage | Typically represents a **12V or 15V DC** coil (check datasheet for exact voltage). | | **R** | Feature | Often indicates **Internal Terminations** (Resistors) or RoHS compliance. | | **BN** | Mounting/Connector | Refers to the physical interface, likely **SMA Female** connectors. | --- ### 2. Technical Specifications These parts are designed for telecommunications, test equipment, and satellite applications. * **Switching Configuration:** Transfer (Double Pole, Double Throw - DPDT). This allows for swapping two signal paths or inserting/removing a component from a signal chain. * **Impedance:** Standard **50 Ohms**. * **Actuation:** Failsafe or Latching (The "B" often implies a specific coil drive requirement). * **RF Performance:** * **Insertion Loss:** Very low (usually < 0.3 dB). * **Isolation:** High (usually > 60-70 dB) to prevent signal leakage between ports. * **VSWR:** Typically below 1.3:1 at max frequency. --- ### 3. Physical Construction * **Housing:** Metal enclosure for EMI/RFI shielding. * **Connectors:** Gold-plated SMA connectors for durability and signal integrity. * **Actuator:** Electromechanical solenoid that physically moves the contact leaves inside the cavity. --- ### 4. Common Applications 1. **Automated Test Equipment (ATE):** Routing signals from a Device Under Test (DUT) to various measurement instruments. 2. **Redundancy Switching:** Automatically switching to a backup signal path if the primary path fails. 3. **Signal Reversal:** Using the transfer function to reverse the phase or path of a signal in a microwave circuit.