The **FCR-5W5-R** is a specific electronic component, typically categorized as a **D-Sub (D-Subminiature) Mixed Contact Connector**. Specifically, the "5W5" designation indicates a power-heavy configuration within the shell. --- ## 1. Technical Specifications The FCR-5W5-R is designed for high-current applications where standard signal pins are insufficient. Below is a breakdown of its primary characteristics: | Feature | Specification | | :--- | :--- | | **Connector Type** | D-Sub Mixed Contact | | **Shell Size** | B (Equivalent to a standard 25-pin D-sub shell) | | **Contact Layout** | 5W5 (5 High-Power Cavities) | | **Gender** | Female (Receptacle) | | **Mounting Type** | Right Angle / Through-Hole (PCB Mount) | | **Current Rating** | Typically 20A to 40A per contact (depending on pins used) | | **Termination** | Solder | --- ## 2. Structural Breakdown ### The "5W5" Configuration In D-sub nomenclature, "5W5" stands for **5** contacts, **W** (with), **5** of which are specialized. - Unlike standard D-subs that have rows of tiny signal pins, this connector has 5 large circular openings. - These openings are designed to house **Power**, **Coaxial**, or **High Voltage** contacts. ### Material Composition * **Shell:** Usually Steel with Tin or Nickel plating for EMI/RFI shielding. * **Insulator:** PBT (Polybutylene terephthalate) or similar UL94V-0 rated thermoplastic. * **Contacts:** Copper alloy with gold plating on the mating area to ensure low resistance and prevent oxidation. --- ## 3. Common Applications Due to its ability to carry significant current in a shielded housing, the FCR-5W5-R is commonly found in: 1. **Industrial Power Supplies:** Delivering DC power to modules. 2. **Telecommunications:** Used in base stations for high-amperage power distribution. 3. **Medical Equipment:** Reliable power interfacing for diagnostic machines. 4. **Military/Aerospace:** Robust interconnects for rugged environments. --- ## 4. Part Number Decoding While specific manufacturers (like FCT, Molex, or Amphenol) may vary slightly, the code generally breaks down as follows: | Segment | Meaning | | :--- | :--- | | **FCR** | Female Connector, Right-angle (often specific to manufacturer series) | | **5W5** | 5 Power/Large cavities total | | **R** | Right-angle orientation (PCB mounting style) |