The **SWC63I-R15J** is a high-performance **Shielded Power Inductor**, commonly used in power management circuits like DC-DC converters. It is designed to handle high currents while minimizing electromagnetic interference (EMI). --- ### 1. Key Technical Specifications Based on the standard nomenclature for this series, here are the typical technical parameters: | Parameter | Value/Description | | :--- | :--- | | **Inductance** | 0.15 µH (indicated by "R15") | | **Tolerance** | ±5% (indicated by "J") | | **Case Size** | 6.3mm x 6.3mm (approximate footprint) | | **Shielding** | Magnetically Shielded (reduces EMI) | | **Mounting Type** | Surface Mount (SMD/SMT) | | **Material** | Composite or Ferrite Core | --- ### 2. Part Number Breakdown Understanding the alphanumeric code helps identify its specific properties: * **SWC**: Series prefix (typically stands for Shielded Wire-wound Chip or a specific manufacturer series). * **63**: Physical dimensions, usually representing a footprint of roughly **6.0 x 3.0 mm** or **6.3 x 6.3 mm** depending on the specific manufacturer's catalog. * **I**: Specific designator for internal construction or height profile. * **R15**: The Inductance value. "R" acts as a decimal point. **R15 = 0.15 microhenries (µH)**. * **J**: Inductance tolerance. **J = ±5%**. --- ### 3. Electronic Characteristics & Applications #### Characteristics: * **High Saturation Current:** Designed to maintain inductance even when high levels of DC current pass through the coil. * **Low DCR (DC Resistance):** Uses thick copper windings to minimize power loss and heat generation. * **Shielded Construction:** The magnetic field is contained within the component, preventing it from interfering with nearby sensitive components on the PCB. #### Common Applications: 1. **Voltage Regulator Modules (VRMs):** Found in motherboards and high-end GPUs. 2. **DC-DC Converters:** Used in "Buck" or "Boost" converters to smooth out current. 3. **Battery Powered Devices:** Efficient power handling for tablets and laptops. 4. **LED Drivers:** Providing stable current for high-brightness lighting. --- ### 4. Typical Circuit Example In a typical Buck Converter circuit, the SWC63I-R15J would be placed between the switching node and the output capacitor: ```text Input (Vin) --> [Switching MOSFET] --> [SWC63I-R15J] --> Output (Vout) | [Output Capacitor] | Ground ```