The **LMI201610A-R68M** is a low-profile, surface-mount (SMD) power inductor. It is commonly used in DC-DC converter circuits for power management in compact electronic devices like smartphones, tablets, and wearables. ### 1. Part Number Breakdown Understanding the nomenclature helps identify the physical and electrical characteristics: | Code Segment | Meaning | Description | | :--- | :--- | :--- | | **LMI** | Series | Multilayer Chip Power Inductor (Metal Alloy type) | | **201610** | Case Size | Dimensions: 2.0mm x 1.6mm x 1.0mm | | **A** | Material/Design | Specific internal material or design revision | | **R68** | Inductance | **0.68 µH** (R denotes decimal point) | | **M** | Tolerance | **±20%** | --- ### 2. Technical Specifications Below are the typical electrical parameters for this specific component: | Parameter | Value | | :--- | :--- | | **Inductance** | 0.68 µH | | **DC Resistance (DCR)** | ~40-50 mΩ (Typical) | | **Saturation Current (Isat)** | ~3.5A - 4.5A (Varies by manufacturer) | | **Temperature Rise Current (Irms)** | ~3.0A | | **Operating Temperature** | -40°C to +125°C | | **Core Material** | Metal Alloy (Iron Powder) | --- ### 3. Key Features & Electronic Properties * **Metal Alloy Construction:** Unlike traditional ferrite inductors, these use a metallic powder core. This allows for **Soft Saturation** characteristics, meaning the inductance drops gradually rather than abruptly when current increases. * **High Current Density:** The 2016 (metric) size is extremely small, yet the metal alloy allows it to handle significantly higher currents than standard multilayer ceramic inductors of the same size. * **Low Magnetic Flux Leakage:** The molded construction provides excellent magnetic shielding, reducing Electromagnetic Interference (EMI) with neighboring components on a crowded PCB. * **Low DCR:** Designed to minimize power loss as heat, increasing the overall efficiency of the power supply unit. --- ### 4. Common Applications * **Buck Converters:** Used as the energy storage element in step-down voltage regulators. * **Mobile Devices:** CPU/GPU power rails in smartphones where space is at a premium. * **IoT Modules:** Providing stable power for wireless sensors and Bluetooth modules. * **SSD Controllers:** Managing power for high-speed data storage units. ---