The **FX1-5B-R** is a high-performance, board-to-board connector manufactured by **Hirose Electric**. It belongs to the FX1 series, which is designed for high-density mounting and reliable electrical performance in industrial and telecommunications equipment. --- ### 1. Key Technical Specifications | Feature | Specification | | :--- | :--- | | **Series** | FX1 (Hirose) | | **Number of Contacts** | 5 (or specific to the sub-configuration) | | **Pitch** | 1.27mm (0.050") | | **Connector Type** | Receptacle (Female) | | **Mounting Type** | Through-hole (Right Angle / Vertical options) | | **Contact Plating** | Gold over Nickel | | **Current Rating** | 0.5A per contact | | **Voltage Rating** | AC 125V | --- ### 2. Major Electronic Characteristics #### A. Contact Design The FX1 series utilizes a **bellows-type contact** design. This ensures: * **Low Insertion Force:** Reduces stress on the PCB during assembly. * **Wiping Action:** The contact surface self-cleans during mating to remove oxidation and ensure a stable connection. #### B. Materials and Durability * **Insulator:** Made of high-grade PPS (Polyphenylene sulfide) or PBT (Polybutylene terephthalate), which provides excellent heat resistance and electrical insulation. * **Mating Cycles:** Typically rated for 50 to 100 cycles, depending on the specific plating thickness. #### C. Signal Integrity The 1.27mm pitch is optimized for high-density signal transmission while minimizing crosstalk. The "R" in the part number often signifies a **Right Angle** orientation or a specific **Receptacle** configuration intended for perpendicular board stacking. --- ### 3. Common Applications Due to its reliability and compact footprint, the FX1-5B-R is commonly found in: 1. **Industrial Controllers:** Connecting daughter cards to motherboards. 2. **Medical Imaging Equipment:** Handling sensor signal routing. 3. **Telecommunications:** Used in rack-mounted switching systems. 4. **Office Automation:** Printers and high-end copiers. --- ### 4. Implementation Example (PCB Footprint) When designing a PCB for this part, the landing pattern must account for the staggered pin layout often found in Hirose FX series connectors. ```cpp // General PCB Design Constraints Pitch = 1.27mm; Hole_Diameter = 0.8mm; // Standard for FX1 series leads Plating = Gold_Flash; Orientation = Right_Angle; ``` ---