The **CCRT-53SXD-R** is a high-performance, multi-throw coaxial switch manufactured by Teledyne Relays. It is specifically designed for high-frequency RF (Radio Frequency) applications where signal integrity and low insertion loss are critical. --- ### 1. General Specifications The CCRT-53SXD-R belongs to the **CCRT-53 series**, which are DC to 26.5 GHz SPDT (Single Pole Double Throw) or multi-throw electromechanical switches. | Parameter | Specification | | :--- | :--- | | **Switch Type** | SP3T to SP6T (Depending on configuration) | | **Frequency Range** | DC to 26.5 GHz | | **Impedance** | 50 Ohms | | **Actuation Voltage** | 28V DC (Nominal) | | **Actuator Type** | Latching | | **Connector Type** | SMA (Female) | --- ### 2. Key Electronic Components & Features The device is composed of several specialized subsystems that allow it to function in demanding environments: #### A. The RF Cavity The internal RF paths are precision-machined to ensure a 50-ohm characteristic impedance. This minimizes **VSWR (Voltage Standing Wave Ratio)** and prevents signal reflection. #### B. Latching Actuator Mechanism Unlike "Failsafe" switches that require constant power to stay in a specific position, the **Latching** mechanism in the CCRT-53SXD-R uses a permanent magnet. * **Benefit:** Power is only required during the switching transition (pulse). * **Result:** Reduced power consumption and lower heat generation within the system. #### C. Integrated Electronic Options (The "SXD" Suffix) The specific part number suffix reveals integrated electronic features: * **S (Self-Cutoff):** The switch includes internal circuitry that automatically disconnects the drive current once the switch has reached its new position. This prevents the coils from overheating. * **X (Indicators):** This version includes internal sets of contacts that allow the user to electronically verify the physical position of the switch (Feedback loop). * **D (Suppression Diodes):** Includes transient voltage suppression (TVS) diodes to protect the driving circuitry from "Back EMF" spikes when the coils are de-energized. --- ### 3. Performance Metrics | Frequency (GHz) | Insertion Loss (dB max) | Isolation (dB min) | VSWR (max) | | :--- | :--- | :--- | :--- | | **DC - 6** | 0.2 | 70 | 1.25:1 | | **6 - 12** | 0.4 | 60 | 1.40:1 | | **12 - 18** | 0.5 | 60 | 1.50:1 | | **18 - 26.5** | 0.7 | 50 | 1.80:1 | --- ### 4. Common Applications * **Aviation & Space:** Due to the latching nature and high reliability. * **Automated Test Equipment (ATE):** Switching between multiple signal sources or antennas. * **Telecommunications:** Signal routing in base stations and satellite ground equipment. ---