The **DFE252012PD-R68M** is a high-performance power inductor designed by Murata. It is part of the DFE series, specifically engineered for power management circuits in mobile devices, tablets, and compact electronics. --- ## 1. Technical Specifications The following table outlines the primary electrical and physical characteristics of the component: | Parameter | Value | Description | | :--- | :--- | :--- | | **Inductance** | 0.68 µH | Magnetic energy storage capacity | | **Tolerance** | ±20% | Allowable deviation from nominal value | | **Rated Current (Isat)** | 4.4 A | Max current before inductance drops 30% | | **Rated Current (Itemp)** | 3.4 A | Max current causing a 40°C temperature rise | | **DC Resistance (DCR)** | 32 mΩ (max) | Internal resistance of the coil | | **Operating Temp** | -40°C to 125°C | Thermal operating range | | **Package Size** | 2.5 x 2.0 x 1.2 mm | Metric 2520 (Inch 1008) | --- ## 2. Key Features and Construction ### Metal Alloy Core Unlike traditional ferrite inductors, this part uses a **metal alloy powder**. This construction provides: * **Soft Saturation:** The inductance decreases gradually as current increases, preventing sudden circuit failure. * **High Current Handling:** Higher saturation current ($I_{sat}$) relative to its physical footprint. ### Magnetic Shielding The component is magnetically shielded to minimize **Electromagnetic Interference (EMI)**. This is crucial for dense PCB layouts where components are placed close to sensitive RF circuits or processors. --- ## 3. Application Use Cases The DFE252012PD-R68M is typically used in the following scenarios: * **DC-DC Converters:** As an output filter in buck/boost regulators. * **Smartphones/Tablets:** Powering CPUs, GPUs, and memory modules. * **Wearable Tech:** Ideal for space-constrained designs requiring high efficiency. --- ## 4. Part Number Breakdown The nomenclature provides specific details about the component: | Code | Meaning | | :--- | :--- | | **DFE** | Series Name (Metal Alloy Power Inductor) | | **252012** | Dimensions (2.5mm x 2.0mm x 1.2mm) | | **PD** | Specific Internal Structure/Material Code | | **R68** | Inductance Value (R denotes decimal, so 0.68 µH) | | **M** | Tolerance (±20%) |