The **LSMT2-30550-R** is a high-performance, surface-mount (SMT) power inductor typically used in DC-DC converter applications. It is part of a series designed to balance high current handling with a low physical profile. --- ### ## Technical Specifications Below are the key electrical and physical characteristics of the LSMT2-30550-R: | Parameter | Value | Description | | :--- | :--- | :--- | | **Inductance** | 0.50 µH | Nominal inductance measured at 100kHz | | **Tolerance** | ±20% | Deviation from nominal value | | **DCR (Max)** | ~0.85 mΩ | DC Resistance; low values minimize heat loss | | **Isat (Saturation Current)** | ~30 - 35 A | The current at which inductance drops by 20-30% | | **Irms (Rated Current)** | ~25 - 30 A | The current that causes a 40°C temperature rise | | **Dimensions** | ~10.0 x 11.5 x 5.0 mm | Physical footprint (LxWxH) | --- ### ## Electronic Composition & Design The part is engineered using specific materials to handle high-frequency switching: 1. **Core Material:** Usually utilizes a **composite metal powder core**. Unlike traditional ferrite, metal powder provides a "soft" saturation characteristic, meaning the inductance drops gradually rather than abruptly when current increases. 2. **Shielding:** It is a **magnetically shielded** construction. This reduces Electromagnetic Interference (EMI), preventing the inductor from affecting nearby sensitive components on the PCB. 3. **Winding:** Uses heavy-gauge copper wire to achieve extremely low **DC Resistance (DCR)**, which is critical for maintaining high efficiency in power supplies. --- ### ## Typical Applications The LSMT2-30550-R is commonly found in the following electronic environments: * **Voltage Regulator Modules (VRMs):** Used in CPU/GPU power delivery on motherboards. * **DC-DC Converters:** Buck, Boost, or Buck-Boost topologies for industrial and consumer electronics. * **High Current Pol (Point of Load):** Providing stable power to FPGAs or ASICs. * **Battery Powered Systems:** Where high efficiency is required to extend battery life. --- ### ## Implementation Note When designing a PCB for this part, ensure large copper planes are connected to the pads. Because this part handles high current, the PCB traces themselves act as a heatsink. Proper thermal management is essential to prevent the component from reaching its maximum operating temperature (typically 125°C or 155°C depending on the specific sub-series).