The part number **M2AS1-A142-R/Q** typically refers to a high-frequency, surface-mount **RF/Microwave Switch** or a specific **Coaxial Switch module**, often associated with brands like Teledyne Relays or similar RF component manufacturers. Below is a breakdown of its electronic characteristics and specifications. --- ## 1. Component Overview This device is an electromechanical switch designed for routing high-frequency signals with minimal loss. It is widely used in automated test equipment (ATE), telecommunications, and RF signal routing. ### Key Specifications | Parameter | Typical Value / Description | | :--- | :--- | | **Switch Type** | SPDT (Single Pole Double Throw) | | **Frequency Range** | DC to 18 GHz (varies by specific sub-series) | | **Actuation Voltage** | 12V to 28V DC (Commonly 12V for -142 models) | | **Impedance** | 50 Ohms | | **Package Style** | Surface Mount (SMT) or Plug-in | | **Coil Transient Suppression** | Included (Indicated by the "R/Q" suffix) | --- ## 2. Technical Features ### A. Actuation & Circuitry * **Failsafe Operation:** In most "M2" series configurations, the switch is "Failsafe," meaning it returns to a known position (usually C to NC) when power is removed. * **Transient Suppression:** The **"R"** and **"Q"** designators typically indicate the presence of internal diodes for back-EMF suppression and moisture/environmental sealing. This protects the driving circuitry from voltage spikes when the coil is de-energized. ### B. RF Performance These parts are engineered for "signal integrity." They offer: * **Low Insertion Loss:** Minimizes signal strength degradation. * **High Isolation:** Prevents signal leakage between ports. * **Low VSWR:** Ensures minimal signal reflection back to the source. --- ## 3. Part Number Decoder (Typical) While internal codes vary by manufacturer, the string generally breaks down as follows: | Code | Meaning | | :--- | :--- | | **M2** | Series designation (Surface Mount / Sub-miniature) | | **AS** | Actuator Type (e.g., Failsafe with indicator or specific sealing) | | **1** | RF Contact Arrangement (SPDT) | | **A** | Internal Termination (or specialized mounting) | | **142** | Specific Voltage/Coil Resistance code | | **R/Q** | Reliability Level / Transient Protection (Diodes) | --- ## 4. Application Areas 1. **Wireless Infrastructure:** Switching between main and redundant antennas. 2. **Test & Measurement:** Routing signals from a Device Under Test (DUT) to various analyzers. 3. **Military/Aerospace:** Used in communication arrays due to high reliability and small footprint. ---