The **FPT705-270-R** is a high-performance, shielded power inductor specifically designed for automotive and industrial electronics. It belongs to the FPT series produced by manufacturers like **Eaton (formerly Coiltronics)**. ### 1. Key Technical Specifications The part number "FPT705-270-R" reveals its electrical characteristics: | Parameter | Specification | | :--- | :--- | | **Inductance** | 270 nH (0.27 µH) | | **Tolerance** | ±10% (typically) | | **Package/Case** | 705 (approx. 7.0 x 8.0 x 5.0 mm) | | **Shielding** | Magnetically Shielded | | **Mounting Type** | Surface Mount (SMD/SMT) | | **RoHS Compliant** | Yes (indicated by the "-R" suffix) | --- ### 2. Core Electronic Features The FPT705 series is engineered for efficiency in high-frequency power conversion. * **High Current Handling:** These inductors are designed to handle high saturation currents (Isat) and high RMS currents (Irms) without losing inductance stability. * **Low DCR (DC Resistance):** It features very low internal resistance to minimize power loss and heat generation, which is critical for high-efficiency voltage regulators. * **Magnetic Shielding:** The construction minimizes Electromagnetic Interference (EMI), protecting sensitive nearby components from magnetic noise. * **Material Composition:** Usually utilizes a ferrite core or metal powder core (depending on the specific revision) to ensure high-frequency performance up to several MHz. --- ### 3. Common Applications Due to its low inductance (270nH) and high current capability, this part is typically used in: 1. **Multi-phase VRMs:** Used in CPU/GPU power delivery modules. 2. **DC-DC Converters:** Point-of-Load (POL) converters for servers and networking equipment. 3. **Automotive Electronics:** Infotainment systems and Engine Control Units (ECUs) where space is limited but power demand is high. --- ### 4. Part Number Breakdown ```text FPT 705 - 270 - R | | | | | | | +-- RoHS Compliant | | +--------- Inductance Value (270 = 270nH) | +----------------- Physical Size Code (Dimensions) +---------------------- Series Name (Flat-Pac Inductor) ```