The **HCP0703-R15-R** is a high-current, magnetically shielded power inductor commonly used in DC-DC converters and voltage regulator modules. It is manufactured by Eaton (formerly Cooper Bussmann/Coiltronics). --- ## 1. Technical Specifications The part number follows a specific nomenclature that defines its physical and electrical characteristics. | Parameter | Value | Description | | :--- | :--- | :--- | | **Inductance** | 0.15 µH | Measured at 100 kHz, 0.1 Vrms | | **Tolerance** | ±20% | Standard industry tolerance for power inductors | | **Current Rating (Irms)** | 26 Amps | Continuous current causing a 40°C temperature rise | | **Saturation Current (Isat)** | 52 Amps | Current at which inductance drops by ~20% | | **DCR (Max)** | 1.1 mΩ | Maximum DC resistance at 20°C | | **Operating Temp** | -55°C to +125°C | Includes self-heating | --- ## 2. Key Features and Construction * **High Current Density:** Optimized for high-frequency power conversion with very low DC resistance (DCR) to minimize power loss. * **Magnetically Shielded:** The construction minimizes Electromagnetic Interference (EMI), making it suitable for densely packed PCBs. * **Material:** It typically utilizes a powder iron core material which provides a "soft" saturation characteristic (it doesn't lose inductance abruptly). * **Surface Mount (SMD):** Designed for automated pick-and-place assembly. --- ## 3. Physical Dimensions The "0703" in the part number refers to the approximate footprint size in millimeters. | Dimension | Measurement (mm) | | :--- | :--- | | **Length** | 7.3 mm (Max) | | **Width** | 7.0 mm (Max) | | **Height** | 3.0 mm (Max) | --- ## 4. Typical Applications This component is found in circuits requiring high efficiency and high current handling in a small form factor: 1. **Voltage Regulator Modules (VRM):** For CPUs and GPUs. 2. **Point of Load (POL) Converters:** Distributed power systems. 3. **Battery Powered Systems:** Handheld devices and laptops. 4. **Telecom/Datacom:** High-speed routers and switches. --- ## Part Number Breakdown ```text HCP 07 03 - R15 - R | | | | | | | | | +-- RoHS Compliant | | | +------ Inductance Value (R15 = 0.15 µH) | | +------------ Height Code (approx 3.0 mm) | +--------------- Size Code (approx 7.0 mm) +------------------- Series Name (High Current Power) ```