The part number **15VF-56-R** typically refers to a **Power Inductor** (specifically a high-current, SMD power inductor) often manufactured by companies like **Sumida** or similar specialty magnetic component producers. Below is a breakdown of its characteristics, technical specifications, and common applications. --- ## 1. Component Overview The 15VF series are high-power, surface-mount (SMD) inductors designed for automotive and industrial power supply circuits. The "R" suffix usually denotes "RoHS compliance." ### Technical Specifications | Parameter | Typical Value | | :--- | :--- | | **Inductance** | 5.6 µH (denoted by "56") | | **Inductance Tolerance** | ±20% (Typical) | | **Type** | Shielded Surface Mount Power Inductor | | **Core Material** | Ferrite / Powdered Iron | | **Max DC Current (Isat)** | High (designed for heavy load stability) | | **Operating Temperature** | -40°C to +125°C (Automotive Grade) | --- ## 2. Key Features * **Magnetic Shielding:** The "VF" series is usually shielded to minimize Electromagnetic Interference (EMI), which is critical in dense PCB layouts. * **High Saturation Current:** It is engineered to maintain its inductance even when high current flows through it, preventing circuit failure. * **Robust Construction:** Designed to withstand high-vibration environments and thermal cycling. --- ## 3. Common Applications These components are primarily found in DC-DC converters and power management modules where high efficiency is required. 1. **Automotive Systems:** LED lighting drivers, Infotainment systems, and ADAS (Advanced Driver Assistance Systems). 2. **Industrial Electronics:** High-current power supplies for robotics and PLC controllers. 3. **Computing:** Voltage Regulator Modules (VRMs) for servers and workstations. --- ## 4. Identifying the Part Number Code | Code Segment | Meaning | | :--- | :--- | | **15** | Usually represents the physical size/series (e.g., 15mm class footprint). | | **VF** | Indicates the specific series type (Shielded, high-power). | | **56** | The inductance value (5.6 in this context, or 56 depending on the specific vendor's multiplier). | | **R** | RoHS Compliant / Lead-Free. | ---