The **HTEH20120H-R47MSR** is a high-performance power inductor, typically used in power management circuits for compact electronic devices. It belongs to the category of **Molded Power Inductors**, which are designed for high current density and low electromagnetic interference (EMI). --- ### 1. Technical Specifications Breakdown The part number provides specific details about the component's physical and electrical characteristics: | Parameter | Value / Detail | | :--- | :--- | | **Inductance** | 0.47 µH (Microhenries) | | **Tolerance** | ±20% (indicated by 'M') | | **Dimensions (LxWxH)** | 2.0 x 1.2 x 1.0 mm (approx.) | | **Case Size** | 2012 (Metric) / 0805 (Imperial) | | **Construction** | Metal Alloy / Molded Type | | **Shielding** | Magnetically Shielded | --- ### 2. Key Features * **High Saturation Current:** Because it uses a metal alloy core rather than traditional ferrite, it can handle high peak currents without the inductance dropping sharply (soft saturation). * **Low DCR (DC Resistance):** Designed to minimize power loss and heat generation, which is critical for battery-operated devices. * **Magnetically Shielded:** The molded structure acts as a shield, reducing EMI leakage that could interfere with nearby sensitive components. * **Compact Profile:** The "10" in the height code usually indicates a low profile (1.0mm), making it suitable for thin smartphones, tablets, and wearables. --- ### 3. Applications This specific inductor is primarily used in **DC-DC Converters** and **Point-of-Load (POL)** power supplies. Common applications include: 1. **Smartphones & Tablets:** Powering CPU/GPU cores. 2. **Wearables:** Efficient power management for smartwatches and fitness trackers. 3. **SSD (Solid State Drives):** Managing power rails for high-speed data storage. 4. **IoT Modules:** Providing stable voltage in small-form-factor wireless devices. --- ### 4. Comparison: Ferrite vs. Molded Alloy (HTEH Series) | Feature | Standard Ferrite | Molded Alloy (HTEH) | | :--- | :--- | :--- | | **Saturation** | Hard (Quick drop) | Soft (Gradual drop) | | **Ruggedness** | Fragile (Brittle) | High (Mechanical strength) | | **EMI** | Moderate | Excellent (Shielded) | | **Current Handling** | Lower | Higher for same size |