The **CCR-53S90-R** is a high-performance electromechanical coaxial switch manufactured by Teledyne Relays. It is specifically designed for high-frequency applications where low insertion loss and high isolation are critical. --- ### 1. Key Technical Specifications The following table summarizes the primary electronic and physical characteristics of the CCR-53S90-R: | Feature | Specification | | :--- | :--- | | **Switch Type** | SPDT (Single Pole Double Throw) | | **Frequency Range** | DC to 26.5 GHz | | **Actuation Type** | Latching | | **Operating Voltage** | 28.0 VDC (Typical) | | **Actuating Current** | 140 mA (approx. at 28V) | | **Impedance** | 50 Ohms | | **Connector Type** | SMA (Female) | --- ### 2. Detailed Electronic Components & Functions #### A. Latching Actuator Mechanism Unlike "failsafe" switches that require continuous power to stay in a specific position, the **Latching** mechanism in the CCR-53S90-R uses a permanent magnet. - **Power Efficiency:** It only requires a momentary pulse of current to flip the switch state. - **Stability:** Once the state is changed, it remains in that position even if power is completely removed. #### B. RF Path Design The internal RF paths are engineered to minimize signal degradation. At its maximum frequency of 26.5 GHz, the part maintains: * **Low Insertion Loss:** Minimizes signal strength reduction as it passes through the switch. * **High Isolation:** Prevents signal leakage between the active and inactive ports. * **Low VSWR (Voltage Standing Wave Ratio):** Ensures minimal signal reflection back to the source. #### C. Control & Interface The "R" suffix often denotes specific connector or circuit enhancements (such as suppression diodes or moisture seals). * **Suppression Diodes:** Often included to protect the driving circuitry from "back EMF" (voltage spikes) generated when the inductive coil is de-energized. * **Pulse Duration:** Typically requires a pulse width of approximately 15ms to 20ms for reliable switching. --- ### 3. Application Use Cases Due to its high-frequency rating (26.5 GHz), this part is commonly used in: 1. **Automated Test Equipment (ATE):** Switching between different instruments or devices under test. 2. **Satellite Communication:** Routing signals in ground stations. 3. **Radar Systems:** Directing high-frequency pulses between transmitters and receivers.