The **CCP-33SXD-RMS** is a high-performance, electromechanical coaxial switch manufactured by Teledyne Coax Switches. It is specifically designed for high-frequency RF (Radio Frequency) applications where signal integrity and reliability are paramount. --- ### 1. Technical Specifications The following table highlights the core electrical and mechanical characteristics of this component: | Feature | Specification | | :--- | :--- | | **Switch Type** | SPDT (Single Pole Double Throw) | | **Frequency Range** | DC to 18 GHz | | **Actuator Voltage** | 24V to 30V DC (Nominal 28V) | | **Actuator Current** | ~140 mA @ 28V | | **Impedance** | 50 Ohms | | **Connector Type** | SMA (Female) | | **Actuation Mode** | Failsafe | --- ### 2. Key Electronic Features The suffix designations in the part number (RMS) indicate specific integrated electronic features: * **Failsafe Operation:** In a failsafe configuration, the switch remains in a "closed" position for one path when de-energized. It only switches to the alternative path when DC voltage is applied to the actuator. If power is lost, it automatically returns to its default state. * **Indicators (The "I" or "R" logic):** The "RMS" series typically includes internal indicator circuitry. These are auxiliary contacts that allow the system to electronically verify the physical position of the switch (confirming if the RF path is actually connected). * **Suppression Diodes:** These units usually include internal diodes across the actuator coil to suppress "back EMF" (voltage spikes) that occur when the coil is de-energized, protecting sensitive driving electronics. --- ### 3. RF Performance Metrics At high frequencies, the electronic efficiency is measured by three primary factors: 1. **Insertion Loss:** The amount of signal power lost when passing through the switch (typically < 0.5dB at 18GHz). 2. **Isolation:** The ability of the switch to prevent signal leakage into the "off" port (typically > 60dB at high frequencies). 3. **VSWR (Voltage Standing Wave Ratio):** A measure of impedance matching. For this model, it is generally kept below 1.5:1 up to 18 GHz. --- ### 4. Typical Applications * **Test and Measurement:** Used in automated test equipment (ATE) to route signals between instruments. * **Communications:** Signal routing in base stations or satellite ground stations. * **Military/Aerospace:** Due to the "RMS" ruggedized nature and high-reliability standards.