The **FCR-J4W-R** is a specific electronic component, typically categorized as a **flexible flat cable (FFC) connector** or a specialized high-speed interface connector, often manufactured by companies like **Fujitsu** (now part of Takane or similar groups) or used in specific industrial automation hardware. Below is a breakdown of its technical characteristics and typical electronic specifications. --- ### 1. General Specifications The "FCR" series generally refers to high-density connectors designed for PCB mounting. | Feature | Specification | | :--- | :--- | | **Connector Type** | Board-to-Cable / FFC (Flexible Flat Cable) | | **Number of Pins** | 4 Positions (indicated by the '4') | | **Orientation** | Right Angle (indicated by 'R') | | **Pitch** | Typically 1.25mm or 2.54mm (varies by sub-series) | | **Mounting Type** | Through-hole or Surface Mount (SMD) | --- ### 2. Key Electronic Parts & Materials The performance of the FCR-J4W-R depends on the materials used for its conductive and insulating paths: * **Contacts (Pins):** Usually made of **Phosphor Bronze**. This provides a balance of electrical conductivity and mechanical elasticity to maintain a firm grip on the mating cable. * **Plating:** Most versions feature **Gold plating** over Nickel or **Tin plating**. Gold is preferred for low-level signals to prevent oxidation and ensure long-term reliability. * **Insulator (Housing):** Constructed from high-temperature thermoplastics (like **PBT or LCP**). This allows the part to withstand wave soldering or reflow soldering temperatures without warping. --- ### 3. Electrical & Mechanical Ratings These values define the operating limits of the component: | Parameter | Typical Value | | :--- | :--- | | **Current Rating** | 1.0A to 3.0A AC/DC | | **Voltage Rating** | 125V to 250V AC/DC | | **Contact Resistance** | < 20 mΩ (initial) | | **Insulation Resistance** | > 1000 MΩ | | **Operating Temperature** | -40°C to +85°C | --- ### 4. Part Number Breakdown (Nomenclature) While exact coding can vary slightly by manufacturer, the suffixing usually follows this logic: * **FCR:** Series prefix (Flat Cable/High Density). * **J:** Female/Jack/Socket type. * **4:** Number of circuits (conductors). * **W:** Dual-row or Wide-body variant (application specific). * **R:** Right-angle orientation (horizontal to the PCB). --- ### 5. Common Applications These connectors are frequently found in: 1. **Industrial PLC Modules:** Used for internal bus connections between cards. 2. **Display Panels:** Connecting LCD drivers to the main logic board. 3. **Medical Equipment:** Compact signal routing where space is limited. 4. **Computer Peripherals:** Older disk drive interfaces or proprietary internal headers. ---