The **CCRT-53SX0-R** is a high-performance **Electromechanical Coaxial Switch** manufactured by Teledyne Relays. It is primarily used in RF (Radio Frequency) and microwave applications to route signals between a common port and multiple output ports. --- ### 1. Key Technical Specifications The device is part of the **CCR-53 Series**, which are multi-throw switches designed for high-frequency precision. | Parameter | Specification | | :--- | :--- | | **Frequency Range** | DC to 18 GHz (Standard) | | **Switch Type** | SP3T (Single Pole, Triple Throw) | | **Actuator Type** | Latching | | **Coil Voltage** | 28 VDC (Typical for this series) | | **Impedance** | 50 Ohms | | **Connector Type** | SMA (Female) | | **Operational Temperature** | -55°C to +85°C | --- ### 2. Detailed Electronic Characteristics #### A. RF Performance The "SX0" designation typically refers to specific performance characteristics regarding isolation and insertion loss: * **Insertion Loss:** Very low (typically < 0.5 dB at 18 GHz), ensuring signal integrity. * **Isolation:** High (typically > 60 dB), preventing signal leakage into inactive ports. * **VSWR (Voltage Standing Wave Ratio):** Low (typically < 1.5:1), minimizing signal reflection. #### B. Actuator Mechanism (Latching) Unlike "failsafe" switches that require continuous power to stay in a specific position, the **Latching** mechanism in the CCRT-53SX0-R: * Only requires a brief pulse of current to switch states. * Remains in its last position if power is lost. * Significantly reduces power consumption and heat dissipation in the system. #### C. Control Interface The "T" in the part number usually indicates **TTL Logic Compatibility**. This means the switch can be controlled directly by digital circuits or microcontrollers (0V for OFF, 5V for ON) rather than needing a high-power analog driver. --- ### 3. Pinout and Connection Logic The device uses a circular or D-sub connector for control signals. Below is the general logic for a 3-way switch: ```text Control Logic (Example): - Port 1 Active: Apply pulse to Pin 1 (Logic High) - Port 2 Active: Apply pulse to Pin 2 (Logic High) - Port 3 Active: Apply pulse to Pin 3 (Logic High) - Reset: Clears all paths (if applicable) ``` --- ### 4. Typical Applications * **Test and Measurement:** Automated test equipment (ATE) for switching between different DUTs (Devices Under Test). * **Telecommunications:** Signal routing in satellite ground stations or base stations. * **Military/Aerospace:** Ruggedized switching in radar and electronic warfare systems.