The **DFE201210U-R33M#** is a high-performance, miniature power inductor manufactured by **Murata Electronics**. It belongs to the DFE series, which utilizes metal alloy magnetic materials to handle high currents in a compact footprint. --- ### 1. General Specifications Below are the core technical parameters for this specific component: | Parameter | Value | | :--- | :--- | | **Inductance** | 0.33 µH | | **Tolerance** | ±20% | | **DC Resistance (Max)** | 21 mΩ | | **Rated Current (Isat)** | 5.2 A (Max) | | **Rated Current (Itemp)** | 4.3 A (Max) | | **Operating Temperature** | -40°C to +125°C | | **Case Code (Inch/Metric)** | 0805 / 2012 | --- ### 2. Physical Dimensions The "201210" in the part number indicates the physical size of the component: * **Length (L):** 2.0 mm * **Width (W):** 1.2 mm * **Thickness (T):** 1.0 mm (Max) --- ### 3. Key Features & Material Science Unlike traditional ferrite inductors, the DFE series uses a **Metal Alloy Core**. This provides several advantages: * **Soft Saturation:** The inductance does not drop abruptly when the current increases, ensuring stable performance in power-hungry circuits. * **Low DC Resistance (DCR):** The flat wire or optimized internal structure reduces energy loss as heat. * **Magnetic Shielding:** The construction inherently minimizes electromagnetic interference (EMI), which is critical for densely packed PCBs. --- ### 4. Typical Applications This inductor is specifically designed for high-frequency DC-DC converters. Common use cases include: 1. **Smartphones & Tablets:** Power management modules (PMICs) for CPUs and GPUs. 2. **Wearables:** Efficient voltage regulation in space-constrained IoT devices. 3. **Portable Electronics:** SSDs and handheld gaming consoles where low-profile components are required. --- ### 5. Part Number Breakdown The suffix/code can be interpreted as follows: `DFE` (Series) + `201210` (Size) + `U` (Material Code) + `R33` (0.33µH) + `M` (±20% Tolerance)