The **CCRT-53SXE-R** is a specialized high-performance electromechanical coaxial switch manufactured by Teledyne Relays. It belongs to the **CRT-53 series**, which are designed for high-frequency RF applications requiring ultra-fast switching speeds and high reliability. --- ### 1. General Specifications The CCRT-53SXE-R is a **SPDT (Single Pole Double Throw)** switch. Below is a breakdown of its core electronic and mechanical characteristics: | Feature | Specification | | :--- | :--- | | **Switch Type** | Coaxial / Electromechanical | | **Configuration** | SPDT (1 Input, 2 Outputs) | | **Frequency Range** | DC to 26.5 GHz | | **Actuator Type** | Latching | | **Operating Voltage** | 28V DC (Nominal) | | **Actuator Current** | ~125 mA at 28V | | **Switching Time** | 10 ms (Max) | --- ### 2. Key Electronic Features The model suffix **"SXE-R"** indicates specific built-in features that enhance its performance and integration: #### A. Latching Actuator ("S") Unlike "failsafe" switches that require constant power to stay in a specific position, this **latching** switch uses a pulse of power to flip the state. Once switched, it remains in that position without consuming power, which minimizes heat dissipation within the component. #### B. Electronic Terminals ("E") The "E" designates the inclusion of internal **Squelch/Electronic** features, typically meaning it includes: * **Indicator Circuitry:** Provides a feedback signal to the user (or a control system) to confirm the switch has successfully reached the desired position. * **Arc Suppression Diodes:** Protects the driving circuitry from back-EMF spikes generated by the relay coils. #### C. Environmental & Connector Type ("R") The "R" refers to the **SMA Female** connectors and specific RoHS compliance standards or environmental sealing levels suitable for aerospace and telecommunications environments. --- ### 3. RF Performance Metrics At high frequencies, the electronic integrity of the signal path is critical. The CCRT-53SXE-R provides the following RF characteristics: | Frequency (GHz) | VSWR (Max) | Insertion Loss (dB Max) | Isolation (dB Min) | | :--- | :--- | :--- | :--- | | **DC – 6** | 1.25:1 | 0.20 | 70 | | **6 – 12** | 1.40:1 | 0.40 | 60 | | **12 – 18** | 1.50:1 | 0.50 | 60 | | **18 – 26.5** | 1.80:1 | 0.70 | 50 | --- ### 4. Application Areas Because of its high precision and low signal loss, this part is commonly used in: 1. **Automated Test Equipment (ATE):** Routing high-frequency signals between instruments and devices under test. 2. **Satellite Communications:** High-reliability switching in ground stations. 3. **Radar Systems:** Pulse routing and signal processing paths. 4. **Telecom Infrastructure:** Switching between redundant antenna paths.