### FP3-3R3-R Technical Overview The **FP3-3R3-R** is a high-frequency, high-current power inductor manufactured by **Eaton (formerly Cooper Bussmann)**. It belongs to the **FP3 series** of Flat-Pac™ inductors, which are designed for high-density power applications. --- ### Key Specifications | Parameter | Value | | :--- | :--- | | **Inductance** | 3.3 µH | | **Tolerance** | ±20% | | **Current Rating (Irms)** | 3.2 Amps | | **Saturation Current (Isat)** | 4.1 Amps | | **DC Resistance (DCR)** | 47.3 mΩ (Max) | | **Operating Temperature** | -40°C to +125°C | | **Package Type** | Surface Mount (SMD) | | **Dimensions** | 7.2mm x 6.7mm x 3.0mm | --- ### Core Characteristics 1. **Material Construction**: * It utilizes a **ferrite core** material which ensures low core losses at high frequencies. * The "R" suffix indicates that the part is **RoHS compliant** (lead-free). 2. **Flat-Pac™ Design**: * The inductor features a low-profile, rectangular shape. This "flat" design is optimized for automated assembly and maximizes space efficiency on printed circuit boards (PCBs). 3. **Magnetic Shielding**: * The component is magnetically shielded, which minimizes Electromagnetic Interference (EMI) with surrounding sensitive components. --- ### Typical Applications The FP3-3R3-R is commonly integrated into the following systems: * **DC-DC Converters**: Used as an energy storage element in buck, boost, or buck-boost regulators. * **Voltage Regulator Modules (VRMs)**: Providing stable power to CPUs and GPUs. * **Portable Electronics**: Found in laptops and tablets due to its small footprint and height. * **Telecommunications**: Used in distributed power systems and network hubs. --- ### Comparison: Inductance vs. Current When using this part, it is critical to understand the relationship between current and performance: ```python # Conceptual representation of Saturation if current > 4.1: inductance_drops_rapidly = True efficiency = "Decreased" thermal_risk = "High" ```