## SC5022FH-R82: Technical Breakdown The **SC5022FH-R82** is a high-current, surface-mount (SMD) power inductor. It is commonly used in DC-DC converters and power supply modules where high efficiency and low resistance are critical. --- ### 1. Key Technical Specifications | Parameter | Specification | | :--- | :--- | | **Inductance** | 0.82 µH | | **Tolerance** | ±20% (M) | | **DC Resistance (DCR)** | ~7.2 mΩ (Max) | | **Saturation Current (Isat)** | ~18.0 A to 20.0 A | | **Heating Current (Irms)** | ~11.0 A to 12.0 A | | **Operating Temperature** | -40°C to +125°C | | **Package / Case** | 5022 (Approx. 18.5 x 15.2 x 7.1 mm) | --- ### 2. Component Composition The SC5022FH-R82 consists of several integral electronic parts: 1. **Magnetic Core:** Typically made of a Ferrite or Iron Powder composite. The "FH" series often indicates a high-frequency, high-current core design optimized for low core losses. 2. **Copper Winding:** A thick, flat, or round copper wire is wound around the core. The thickness of this wire determines the **DC Resistance (DCR)** and the **Irms** (Heat rating). 3. **Shielding:** This is a shielded inductor, meaning the magnetic field is largely contained within the component. This reduces **Electromagnetic Interference (EMI)** with neighboring components on the PCB. 4. **Terminations:** Solderable lead frames (usually Tin-plated) that allow the part to be mounted using standard SMT (Surface Mount Technology) reflow processes. --- ### 3. Part Number Breakdown Understanding the nomenclature helps in identifying equivalent parts: * **SC:** Series prefix (Manufacturer specific, often Signal Transformer or Bel Fuse). * **5022:** Physical size dimensions (Height and footprint). * **FH:** High current / High-frequency performance series. * **R82:** Inductance value code. "R" acts as a decimal point. **R82 = 0.82 µH**. --- ### 4. Common Applications Due to its low inductance and high current handling, this part is found in: * **Graphics Cards (GPUs):** Voltage Regulator Modules (VRM). * **Server Power Supplies:** High-efficiency buck converters. * **Laptop Power Rails:** Main CPU/GPU power delivery. * **Industrial Converters:** Step-down modules requiring high thermal stability.