The **CCS-47N9D-R** is a high-performance, electromechanical coaxial switch manufactured by **Teledyne Relays**. It belongs to the **CCS-47** series, which are designed for broadband applications requiring high power handling and excellent electrical stability. --- ## 1. Technical Specifications The following table summarizes the key electronic and mechanical parameters of the CCS-47N9D-R: | Parameter | Specification | | :--- | :--- | | **Switch Type** | SPDT (Single Pole Double Throw) | | **Frequency Range** | DC to 12.0 GHz | | **Operating Voltage** | 24V to 30V DC (28V Nominal) | | **Actuator Type** | Failsafe | | **Connector Type** | N-Type (Female) | | **Impedance** | 50 Ohms | | **Actuating Current** | 140 mA (approx. at 28Vdc) | | **Switching Time** | 15 ms (Maximum) | --- ## 2. Key Electronic Components & Features ### A. Actuator Mechanism (Failsafe) The "R" in the part number often denotes specific RoHS compliance or revision, but the core electronic function is **Failsafe**. * **Behavior:** The switch remains in one position when de-energized. When the 28V DC power is applied, the internal solenoid moves the contact to the second position. If power is lost, it automatically returns to the original position. ### B. RF Path & Contacts The internal RF contacts are engineered for low loss and high isolation: * **Insertion Loss:** Typically < 0.2dB at low frequencies and < 0.5dB at 12GHz. * **Isolation:** Provides > 60dB isolation at higher frequencies, ensuring minimal signal leakage between ports. * **VSWR:** Maintains a Voltage Standing Wave Ratio of < 1.5:1, reducing signal reflections. ### C. D-Sub Connector (The "D" Suffix) The **"D"** in the part number indicates the electrical interface: * Instead of solder pins or terminals, this unit features a **male 9-pin D-Subminiature connector**. * This allows for secure, multi-pin integration for power and (optionally) indicator circuits. --- ## 3. Physical & Environmental Attributes * **Construction:** The housing is typically made of passivated stainless steel or aluminum to ensure electromagnetic shielding and durability. * **Operating Temperature:** -55°C to +85°C. * **Cycle Life:** Designed for high reliability, often rated for 1,000,000 cycles minimum. --- ## 4. Part Number Breakdown Understanding the nomenclature helps identify the specific electronic configuration: | Code | Meaning | | :--- | :--- | | **CCS-47** | Series (Commercial Coaxial Switch, SPDT) | | **N** | N-Type RF Connectors | | **9** | Frequency Range (12 GHz) | | **D** | D-Subminiature Connector (9-pin) | | **-R** | RoHS Compliant |