The **SPB1005-R22M** is a high-current, surface-mount (SMD) shielded power inductor. This component is typically used in power management circuits for voltage regulation and filtering. Below is a detailed breakdown of its electronic characteristics and specifications. ### 1. Part Number Breakdown Understanding the nomenclature helps identify the physical and electrical properties: | Segment | Meaning | Details | | :--- | :--- | :--- | | **SPB** | Series Code | High-current shielded power inductor series | | **1005** | Case Size | Dimensions (approx. 10mm x 10mm x 5mm) | | **R22** | Inductance Value | **0.22 µH** (R represents the decimal point) | | **M** | Tolerance | **±20%** | --- ### 2. Technical Specifications While exact values can vary slightly by manufacturer (such as Sunlord or Cyntec), the standard specifications for an R22M in this size are: | Parameter | Value (Typical) | | :--- | :--- | | **Inductance** | 0.22 µH | | **DC Resistance (DCR)** | ~0.8mΩ to 1.5mΩ (Very Low) | | **Saturation Current (Isat)** | 30A - 50A (High current handling) | | **Heating Current (Irms)** | 20A - 35A | | **Operating Temperature** | -40°C to +125°C | | **Shielding** | Magnetic Shielded (Reduces EMI) | --- ### 3. Key Electronic Features * **High Saturation Current:** Designed to maintain inductance even when high levels of DC current flow through the coil. * **Low DCR:** The use of thick copper wire ensures minimal power loss through heat, increasing the efficiency of power converters. * **Magnetic Shielding:** The core structure minimizes electromagnetic interference (EMI), which is critical in densely packed PCB layouts. * **Composite Core:** Usually made from metal alloy powder, providing soft saturation characteristics compared to ferrite cores. --- ### 4. Common Applications This part is predominantly found in high-efficiency power supplies: * **DC-DC Converters:** Used in Buck or Boost regulators. * **GPU/CPU Power Supply:** Providing stable current to high-performance processors (Vcore rails). * **Server/Base Stations:** High-power density modules. * **Automotive Electronics:** Powering infotainment or ADAS systems. --- ### 5. Footprint (Mechanical Data) ```text Approximate Dimensions: L: 10.0mm ± 0.5mm W: 10.0mm ± 0.5mm H: 5.0mm (Max) ```