The **HAH83-R68** is a high-current, automotive-grade shielded power inductor. It is part of a specialized series (often produced by manufacturers like Cyntec or Delta) designed for high-density power applications where space is limited and reliability is critical. --- ### 1. Key Technical Specifications | Parameter | Value / Description | | :--- | :--- | | **Inductance** | 0.68 µH (Indicated by "R68") | | **Core Material** | Metal Alloy (Carbonyl Iron) | | **Shielding** | Magnetically Shielded (Low EMI) | | **Saturation Current ($I_{sat}$)** | Typically > 30A (Depending on specific case size) | | **DC Resistance (DCR)** | Ultra-low (Typically < 2.0 mΩ) | | **Operating Temperature** | -55°C to +155°C | --- ### 2. Breakdown of the Part Number The nomenclature typically follows this structure: * **HAH:** The series identifier (High Current, Automotive Grade). * **83:** Refers to the physical dimensions (Case size). Usually, this implies a base size of approximately 8.0mm x 8.0mm or similar footprints. * **R68:** The inductance value in Microhenries (µH). The "R" acts as the decimal point. $0.68 \text{ µH}$. --- ### 3. Core Technologies and Materials The HAH83-R68 utilizes **Metal Alloy Powder** technology rather than traditional ferrite. This provides several advantages: * **Soft Saturation:** Unlike ferrite cores that drop inductance sharply when current limits are exceeded, this inductor has a gradual saturation curve. * **High Temperature Stability:** It maintains performance even in extreme heat, making it suitable for under-the-hood automotive environments. * **Low Acoustic Noise:** The molded construction reduces buzzing (magnetostriction) compared to traditional wire-wound inductors. --- ### 4. Common Applications Due to its high current handling and low DCR, the HAH83-R68 is primarily used in: 1. **DC/DC Converters:** Voltage regulator modules (VRMs) for CPUs and GPUs. 2. **Automotive Systems:** ADAS (Advanced Driver Assistance Systems), infotainment power supplies, and LED lighting drivers. 3. **Industrial Power:** High-efficiency power supplies where thermal management is a priority. --- ### 5. Footprint Example (Typical) ```text Top View +-----------+ | | | (R68) | <-- Value Marking | | +-----------+ Side View +-----------+ |###########| <-- Metal Molded Body +-----------+ [ ] [ ] <-- Solder Pads (SMD) ```