The **SSL1005M-R15MF-R39** is a high-current, low-profile power inductor typically used in DC-DC converter applications. Below is a detailed breakdown of its specifications, construction, and typical use cases. --- ## 1. Component Overview This part belongs to the category of **Surface Mount (SMT) Power Inductors**. It is designed to handle significant current levels while maintaining a small footprint, making it ideal for modern high-efficiency power supplies. ### Technical Specifications | Parameter | Value / Specification | | :--- | :--- | | **Inductance** | 0.15 µH (Microhenries) | | **Tolerance** | ±20% (M code) | | **DC Resistance (DCR)** | Extremely Low (typically < 1.0 mΩ) | | **Saturation Current (Isat)** | High (typically > 30A, depending on R39 revision) | | **Operating Temperature** | -40°C to +125°C | | **Case Size** | 10x10 mm (approximate footprint) | --- ## 2. Part Number Breakdown The nomenclature reveals specific characteristics of the component: * **SSL**: Series prefix (Shielded Surface Layout / Standard Power Inductor). * **1005**: Physical dimensions (approx. 10.0mm x 10.0mm). * **M**: Molded construction (often indicates metal alloy powder for soft saturation). * **R15**: Inductance value (0.15 µH). * **M**: Tolerance (±20%). * **R39**: Specific revision or manufacturing batch code (can also refer to specific packaging or height variants). --- ## 3. Key Features 1. **Magnetically Shielded:** The molded construction acts as a shield, reducing Electromagnetic Interference (EMI) which is critical for sensitive surrounding circuits. 2. **Soft Saturation:** Unlike ferrite inductors that lose inductance sharply when current increases, this metal alloy type has a gradual saturation curve. 3. **Low DCR:** The low direct current resistance minimizes power loss through heat, increasing the overall efficiency of the power stage. --- ## 4. Typical Applications These inductors are commonly found in high-performance electronics where space is limited but power demands are high: * **Voltage Regulator Modules (VRMs):** Found on motherboards and graphics cards (GPUs). * **DC/DC Converters:** Used in point-of-load (POL) power supplies. * **Telecommunications:** In high-speed routers and base stations. * **Laptops/Servers:** Providing stable current to CPU/GPU cores. ---