## FPE-55-R Electronic Component Overview The **FPE-55-R** is a specific electronic component typically identified as a **Power Inductor** or a **Common Mode Choke**, often manufactured by companies like Sumida or similar magnetic component specialists. It is designed primarily for power management and noise filtering in compact electronic circuits. ### 1. Key Technical Specifications | Parameter | Typical Value / Description | | :--- | :--- | | **Component Type** | Fixed Inductor / Surface Mount (SMD) | | **Inductance** | Usually varies by sub-series (nominal values around 5.5µH to 55µH depending on specific tolerance) | | **Current Rating** | High-current capability (designed for DC-DC converters) | | **Mounting Type** | Surface Mount Device (SMD/SMT) | | **Shielding** | Magnetically shielded construction to prevent EMI | | **RoHS Status** | Compliant (indicated by the "-R" suffix) | --- ### 2. Physical and Material Characteristics * **Core Material:** Typically utilizes a **Ferrite core**, which offers high magnetic permeability and low eddy current losses at high frequencies. * **Winding:** Copper wire winding, often flat-wire or thick-gauge to minimize DC Resistance (DCR) and improve efficiency. * **Shielding:** The "FPE" series is generally shielded, meaning the magnetic flux is contained within the component. This is critical for dense PCB layouts where components are placed close together. --- ### 3. Common Applications The FPE-55-R is engineered for robustness and stability. You will commonly find it in: 1. **DC-DC Converters:** Used as an energy storage element in buck, boost, or buck-boost regulators. 2. **Laptops and Tablets:** Part of the power rail filtering for CPUs and GPUs. 3. **Telecommunications:** Used in power supply modules for networking hardware. 4. **Noise Suppression:** Acts as a filter to smooth out ripples in power lines. --- ### 4. Meaning of the Suffixes * **FPE:** Refers to the series designation (Form, Power, Electronic). * **55:** Typically refers to the physical dimensions (e.g., 5.0mm x 5.0mm footprint). * **R:** This usually denotes **RoHS compliance** or **Tape & Reel** packaging, depending on the specific manufacturer's nomenclature.