The **VPH4-0075-R** is a specific high-frequency power inductor part of the **VPH series** manufactured by Eaton (formerly Cooper Bussmann/Coiltronics). These components are primarily designed for use in high-density power conversion applications. --- ### 1. Technical Specifications The following table highlights the key electrical and physical characteristics of the VPH4-0075-R: | Parameter | Specification | | :--- | :--- | | **Inductance** | 7.5 µH (Nominal) | | **Rated Current ($I_{rms}$)** | ~1.6 - 2.1 Amperes (Typical) | | **Saturation Current ($I_{sat}$)** | ~2.5 - 3.0 Amperes | | **DC Resistance (DCR)** | ~0.08 - 0.12 $\Omega$ (Max) | | **Configuration** | Shielded Drum Core | | **Operating Temp** | -40°C to +125°C | | **Packaging** | Surface Mount (SMD) | --- ### 2. Key Electronic Features * **Magnetic Shielding:** The "VPH" series is shielded, which minimizes Electromagnetic Interference (EMI). This is critical for densely packed PCBs where components are close to sensitive analog signals. * **High Frequency Performance:** These inductors are optimized for switching frequencies ranging from **100 kHz up to 1 MHz**, making them suitable for modern DC-DC converters. * **Low Core Loss:** Constructed using ferrite materials that reduce energy loss during high-frequency switching, thereby increasing the overall efficiency of the power supply. * **Rugged Construction:** The "R" suffix typically denotes RoHS compliance, ensuring the part meets environmental standards for lead-free electronics. --- ### 3. Common Applications The VPH4-0075-R is versatile and generally found in the following circuits: 1. **DC-DC Converters:** Buck (step-down), Boost (step-up), and SEPIC topologies. 2. **Point of Load (POL):** Used in telecommunications and computing to provide regulated voltage to CPUs or FPGAs. 3. **Battery Powered Devices:** Due to its small footprint and efficiency, it is ideal for handheld industrial tools or portable medical equipment. 4. **Filtering:** Used as an output filter inductor to smooth out ripple current in power supplies. --- ### 4. Footprint and Mounting The part uses a square or rectangular SMD footprint (often referred to as the "Versa-Pac" style in larger variants, though VPH is usually a standard shielded drum). ```markdown Pinout/Mounting Note: - The component is non-polarized (can be soldered in either direction). - Ensure the solder pad dimensions match the manufacturer's suggested land pattern to prevent "tombstoning" during reflow. ```