The **SCT-SMSM-U8-R** is a specialized high-frequency RF (Radio Frequency) cable assembly. It is primarily used in telecommunications, laboratory testing, and aerospace applications where signal integrity and durability are critical. --- ### 1. Technical Specifications The part number typically breaks down into its interface types and cable characteristics. Below are the core technical specifications: | Parameter | Specification | | :--- | :--- | | **Connector Type A** | SMA Male (Straight) | | **Connector Type B** | SMA Male (Straight) | | **Cable Type** | Flexible or Semi-Rigid (Series 086/U8) | | **Impedance** | 50 Ohms | | **Frequency Range** | DC up to 18 GHz (Standard) / 26.5 GHz (Enhanced) | | **Jacket Material** | FEP (Fluorinated Ethylene Propylene) or Blue PUR | | **Compliance** | RoHS Compliant | --- ### 2. Key Component Breakdown #### A. SMA Connectors (SMSM) The "SMSM" designation indicates **SMA Male to SMA Male**. * **Material:** Usually constructed from gold-plated brass or stainless steel. * **Coupling:** Uses a threaded interface (1/4"-36 thread) to ensure a secure, vibration-resistant connection. * **Pin:** Center conductor is usually gold-plated beryllium copper for maximum conductivity. #### B. The U8 Cable (086 Series) The "U8" suffix often refers to the **0.086-inch diameter** high-performance coaxial cable. * **Shielding:** Features double shielding (usually a silver-plated copper braid over a foil or spiral wrap) to provide high RF shielding effectiveness (>90 dB). * **Dielectric:** Uses PTFE (Polytetrafluoroethylene), which allows for low signal loss (attenuation) at high frequencies. #### C. Performance Features * **Low VSWR:** Designed to minimize Voltage Standing Wave Ratio, ensuring that most of the power reaches the destination rather than reflecting back to the source. * **Phase Stability:** High-quality U8 cables are often phase-stable, meaning the electrical "length" of the cable doesn't change significantly when the cable is bent. --- ### 3. Typical Applications * **Test and Measurement:** Connecting Signal Generators to Spectrum Analyzers. * **Military/Aerospace:** Used in radar systems and electronic warfare suites due to its small form factor and high-frequency capabilities. * **Telecom Infrastructure:** Internal wiring for 5G base stations and microwave backhaul equipment. ---