The **TMHC0604LF-R82MN-D** is a high-current, low-profile power inductor typically used in DC-DC converter applications. It belongs to the category of molded power inductors, known for their compact size and excellent magnetic shielding. --- ### 1. Part Number Breakdown Understanding the alphanumeric code helps identify the component's physical and electrical characteristics: | Code Segment | Meaning | Specification | | :--- | :--- | :--- | | **TMHC** | Series Name | High-current molded inductor series | | **0604** | Case Size | Approx. 6.6mm x 6.4mm | | **LF** | Lead-Free | RoHS compliant / Lead-free termination | | **R82** | Inductance Value | **0.82 µH** (R denotes decimal point) | | **M** | Tolerance | **±20%** | | **N** | Internal Code | Manufacturer specific manufacturing code | | **D** | Packaging | Typically denotes Tape & Reel packaging | --- ### 2. Technical Specifications While exact values can vary slightly by manufacturer (often Cyntec or similar brands), the typical specs for an R82 molded inductor in this frame size are: * **Inductance:** 0.82 µH * **DC Resistance (DCR):** Low (typically 3.0mΩ - 5.0mΩ) to minimize power loss. * **Saturation Current ($I_{sat}$):** High (approx. 15A - 22A). This is the current at which inductance drops by 30%. * **Rated Current ($I_{rms}$):** High (approx. 12A - 16A). Based on temperature rise (usually 40°C). * **Operating Temperature:** -55°C to +125°C (including self-heating). --- ### 3. Key Features & Construction 1. **Molded Structure:** The coil is embedded in a metallic magnetic powder. This design eliminates "acoustic noise" (buzzing) and provides a closed magnetic path for low EMI (Electromagnetic Interference). 2. **Low Profile:** The "04" in 0604 usually indicates a height of roughly 4.0mm, making it suitable for thin electronic devices. 3. **High Efficiency:** The use of flat wire or specialized powder cores results in very low DCR, reducing heat generation during high-load operations. --- ### 4. Common Applications This part is commonly found in power management circuits for: * **Laptops and Tablets:** CPU/GPU core power supplies. * **Servers:** High-efficiency point-of-load (POL) converters. * **Automotive:** Infotainment and ADAS power modules. * **Telecommunications:** Distributed power systems and base stations. ---