The **FTS-85-R/BN** is a high-performance, precision coaxial connector assembly, typically categorized as a **Blind-Mate Floating Coaxial Connector**. These parts are primarily used in high-frequency RF (Radio Frequency) applications where board-to-board or module-to-module connections require compensation for mechanical misalignment. --- ### 1. Key Technical Specifications | Feature | Description | | :--- | :--- | | **Connector Type** | Blind-Mate / Floating Coaxial | | **Impedance** | 50 Ohms (Standard) | | **Frequency Range** | Typically DC to 18 GHz or higher (depending on configuration) | | **Termination Style** | Solder or Crimp (model dependent) | | **Material (Body)** | Brass or Beryllium Copper with Nickel (BN) plating | | **Contact Plating** | Gold or Silver (for low signal loss) | --- ### 2. Functional Electronic Components The "Electronic Parts" of this assembly can be broken down into three main categories: #### A. The Inner Conductor (Contact) The heart of the connector. It is responsible for transmitting the electrical signal with minimal **VSWR (Voltage Standing Wave Ratio)**. In the "R/BN" series, this is usually a gold-plated pin or socket designed for high conductivity and durability over multiple mating cycles. #### B. The Dielectric Insulator This is a non-conductive material (often **PTFE/Teflon**) that separates the inner conductor from the outer shell. It is critical for: * Maintaining constant impedance (50 Ohms). * Preventing electrical arcing between the signal and ground. #### C. The Outer Body & Spring Mechanism The "FTS" series is known for its **Floating** capability. * **Mechanical Compensation:** The outer shell contains a spring or "bellows" design that allows the connector to move (float) in the X, Y, and Z axes. * **Grounding:** The outer body provides the return path for the signal and acts as a shield against Electromagnetic Interference (EMI). --- ### 3. Part Number Breakdown: FTS-85-R/BN * **FTS:** Series prefix (Floating/Blind-Mate Series). * **85:** Specific size or interface diameter (often 0.85mm or a proprietary sizing code). * **R:** Usually denotes "Right Angle" orientation or "Reverse" polarity depending on the specific manufacturer catalog. * **BN:** Refers to the finish, typically **Bright Nickel** or **Black Nickel** plating on the exterior housing. --- ### 4. Common Applications Due to its ability to handle misalignment, this part is used in: 1. **Phased Array Antennas:** Where hundreds of connections must line up simultaneously. 2. **Military Avionics:** High-vibration environments where rigid connections would fail. 3. **Telecom Base Stations:** Connecting daughterboards to backplanes. ---