The **FRL155-R82-MBW** is a high-performance power inductor, typically utilized in DC-DC converters, voltage regulator modules (VRMs), and high-current power supplies. It is designed to handle significant current loads while maintaining a small footprint. --- ### 1. Key Technical Specifications The part number follows a specific nomenclature used by manufacturers (often associated with brands like **Friton** or similar magnetics specialists). | Parameter | Specification | Description | | :--- | :--- | :--- | | **Inductance** | 0.82 µH | The nominal inductance value (R82 = 0.82). | | **Tolerance** | ±20% (Typical) | The allowable variance in inductance value. | | **Saturation Current ($I_{sat}$)** | ~30A - 45A | The current at which inductance drops by a specific % (e.g., 20-30%). | | **Heating Current ($I_{rms}$)** | ~25A - 35A | The DC current that causes a 40°C temperature rise. | | **DCR (Max)** | ~1.5 - 2.5 mΩ | DC Resistance; low values minimize power loss as heat. | | **Material** | Metal Composite | Uses iron powder or alloy for high saturation and soft-roll off. | --- ### 2. Physical Characteristics * **Construction:** It is a molded power inductor. These are created by pressing metal powder around a copper coil, which provides excellent magnetic shielding and reduces acoustic noise (buzzing). * **Form Factor:** The "155" usually refers to the dimensions (e.g., approximately 15mm x 15mm footprint), making it a relatively large component capable of handling high power. * **SMD Design:** It is a Surface Mount Device (SMD), intended for automated PCB assembly. --- ### 3. Application Use Cases This component is found in high-drain electronic environments: 1. **Computing:** GPU and CPU power phases (Vcore). 2. **Industrial:** High-efficiency buck converters for motor control. 3. **Telecom:** Base station power modules where reliability and high current density are required. 4. **Automotive:** (If AEC-Q200 qualified) For infotainment or ADAS power rails. --- ### 4. Advantages * **High Saturation:** Unlike ferrite inductors that drop inductance sharply, the metal composite material allows for a "soft" saturation curve. * **Low EMI:** The molded construction acts as a natural shield, containing the magnetic flux within the body of the part. * **Thermal Stability:** Designed to operate in high-temperature environments (often up to 125°C or 155°C).