The **DFE201610E-R33M** is a high-performance, miniature power inductor manufactured by Murata (formerly Toko). It is specifically designed for power management circuits in compact electronic devices like smartphones, wearables, and IoT sensors. --- ## 1. Component Specifications The following table summarizes the key electrical and physical characteristics of this inductor: | Parameter | Value | | :--- | :--- | | **Inductance** | 0.33 µH | | **Tolerance** | ±20% | | **DC Resistance (DCR)** | 21 mΩ (Max) / 16 mΩ (Typ) | | **Rated Current (Isat)** | 5.5 A (based on 30% inductance drop) | | **Rated Current (Itemp)** | 4.3 A (based on 40°C temperature rise) | | **Package Size** | 2016 (2.0mm x 1.6mm) | | **Height** | 1.0 mm (Max) | | **Operating Temp** | -40°C to +125°C | --- ## 2. Key Features and Technology ### Metal Alloy Core Unlike traditional ferrite inductors, the DFE series uses a **metal alloy powder**. This provides several advantages: * **Soft Saturation:** The inductance drops gradually as current increases, rather than a sharp "cliff" drop seen in ferrite cores. * **High Current Density:** It can handle higher currents in a smaller footprint. ### Construction (Monolithic/Molded) The part is manufactured using a metal molding process where the coil is embedded directly into the metal powder. This design: * Reduces acoustic noise (buzzing). * Minimizes magnetic flux leakage (low EMI). * Provides high mechanical robustness against vibration. --- ## 3. Typical Applications This part is commonly found in **DC-DC converter** circuits where space is at a premium. 1. **Mobile Electronics:** Power rails for CPUs/GPUs in smartphones. 2. **Wearables:** Battery management systems in smartwatches. 3. **Connectivity Modules:** Powering Wi-Fi or Bluetooth chips. --- ## 4. Part Number Breakdown | Segment | Meaning | | :--- | :--- | | **DFE** | Series Name (Metal Alloy Inductor) | | **201610** | Dimensions (2.0 x 1.6 x 1.0 mm) | | **E** | Internal Code (Specific process/material) | | **R33** | Inductance Value (0.33 µH) | | **M** | Tolerance (M = ±20%) |