The **AHP201208RA-R68M** is a high-performance, surface-mount (SMD) power inductor. This component is part of a series designed for high-density power supply circuits, commonly found in mobile devices, DC-DC converters, and compact consumer electronics. --- ### 1. Part Number Breakdown The nomenclature provides specific details about the component's physical and electrical characteristics: | Code Segment | Meaning | Specification | | :--- | :--- | :--- | | **AHP** | Series Name | High Power / Low Profile Inductor | | **2012** | Package Size (Metric) | 2.0 mm x 1.25 mm (0805 Imperial) | | **08** | Height | 0.8 mm (Max height) | | **RA** | Internal Code | Manufacturing/Material series designator | | **R68** | Inductance Value | 0.68 µH | | **M** | Tolerance | ±20% | --- ### 2. Key Electrical Specifications While exact values can vary slightly by manufacturer (e.g., Cyntec or Abracon), typical specifications for an R68M in this series are: * **Inductance:** 0.68 µH * **Tolerance:** ±20% * **DC Resistance (DCR):** Typically very low (approx. 35–45 mΩ) to minimize power loss. * **Saturation Current ($I_{sat}$):** The current at which inductance drops by ~30% (Approx. 2.5A - 3.5A). * **Rated Current ($I_{rms}$):** The current that causes a 40°C temperature rise (Approx. 2.0A - 2.8A). --- ### 3. Construction and Materials This part is usually a **Metal Alloy / Molded Power Inductor**. Unlike traditional wire-wound inductors, it features: 1. **Magnetic Metal Powder:** The coil is embedded in a composite of iron powder and resin. 2. **Shielded Design:** The molded construction provides inherent magnetic shielding, which reduces Electromagnetic Interference (EMI). 3. **Monolithic Structure:** Provides better mechanical strength and resistance to vibration/shock compared to ferrite drum cores. --- ### 4. Typical Applications Due to its small footprint (0805 size) and high current handling, it is used in: * **Smartphones & Tablets:** Power management IC (PMIC) circuits. * **Wearables:** Smartwatches and health monitors requiring thin profiles. * **HDD/SSD:** Localized voltage regulation. * **Point of Load (POL):** High-efficiency DC-DC converters. --- ### 5. Land Pattern Dimensions When designing a PCB for this part, use the following standard 2012 (0805) dimensions: ```text <--- 2.0mm ---> +---------------+ ^ | [Pad] [Pad] | 1.25mm +---------------+ v ```