The **FCR-56-R** is a specific electronic component, typically categorized as a **High-Power Thick Film Chip Resistor**. These components are designed for high-density mounting and are frequently used in power management and automotive applications due to their durability and power handling capabilities. --- ### 1. Key Technical Specifications The "FCR" series generally denotes high-power characteristics. Below are the typical electronic specifications for the **FCR-56-R** variant: | Feature | Specification | | :--- | :--- | | **Component Type** | Thick Film Chip Resistor | | **Case Size** | 2010 (Metric 5025) | | **Power Rating** | 0.75W to 1W (High Power) | | **Resistance Value** | 56 Ohms (indicated by "56") | | **Tolerance** | ±1%, ±2%, or ±5% (depending on the suffix) | | **Temperature Coefficient** | ±200 ppm/°C | | **Operating Temperature** | -55°C to +155°C | --- ### 2. Physical Construction The FCR-56-R is built using several layers of electronic materials to ensure stability under load: 1. **Substrate:** High-purity Alumina (Ceramic) base. 2. **Resistive Element:** Metal glaze (Thick film) screen-printed onto the ceramic. 3. **Protective Layer:** A glass or epoxy overcoat to protect against moisture and mechanical damage. 4. **Terminations:** Multi-layer construction (usually Silver/Copper/Nickel/Tin) to ensure excellent solderability and prevent "leaching" during high-temp soldering. --- ### 3. Usage and Applications Because this is a "High Power" chip resistor (often rated at 0.75W-1W compared to the standard 0.1W or 0.25W of smaller chips), it is used in circuits where heat dissipation is critical: * **Power Supplies:** Used as a bleed resistor or for voltage regulation. * **Motor Controllers:** Handling current surges in industrial equipment. * **Automotive Electronics:** Used in Engine Control Units (ECUs) and lighting systems. * **DC-DC Converters:** Managing energy conversion loss. --- ### 4. Circuit Symbol and Footprint In Electronic Design Automation (EDA) software like Altium or KiCad, the part is represented as follows: ```markdown Symbol: [R1] ---[ 56Ω ]--- Footprint: EIA 2010 (5.0mm x 2.5mm) ``` ---