The **FP3-R68-R** is a high-performance, surface-mount (SMD) power inductor part of the **FP3 series** (often associated with manufacturers like Eaton/Coiltronics). These components are designed specifically for high-frequency DC-DC converters and voltage regulator modules (VRMs). ### 1. Technical Specifications The part number "R68" signifies the inductance value, while the "R" suffix typically denotes RoHS compliance. | Parameter | Specification | | :--- | :--- | | **Inductance** | 0.68 µH (Microhenries) | | **Tolerance** | ±20% | | **Current Rating (Irms)** | Approximately 12A - 15A (Depending on thermal rise) | | **Saturation Current (Isat)** | High (designed to handle peak currents without core saturation) | | **DCR (DC Resistance)** | Very low (typically in the range of 3.0 mΩ to 5.0 mΩ) | | **Operating Temperature** | -40°C to +125°C | --- ### 2. Physical Characteristics The FP3 series is known for its compact "Flat-Pac" footprint, which optimizes board space while maintaining high current capability. * **Construction:** Ferrite core material with low core loss at high frequencies. * **Shielding:** Magnetically shielded to minimize Electromagnetic Interference (EMI) with surrounding components. * **Form Factor:** Rectangular SMD package, often roughly 7mm x 11mm (though exact dimensions depend on the specific FP version). --- ### 3. Typical Applications Because of the low inductance and high current handling, the FP3-R68-R is used in: 1. **Multi-phase buck regulators:** Used in CPU/GPU power delivery for servers and workstations. 2. **Point of Load (POL) Converters:** High-efficiency power distribution on complex PCBs. 3. **Laptop/Portable Electronics:** Where vertical height and footprint must be minimized. --- ### 4. Part Number Breakdown `FP3` - `R68` - `R` * **FP3**: Series identifier (High-frequency, high-current flat-pac). * **R68**: Inductance code where 'R' acts as a decimal point ($0.68 \mu H$). * **R**: RoHS compliance suffix.