The **MA12FAD-R** is a specific surface-mount (SMD) power inductor, commonly used in high-density electronic circuits. It is part of the MA series, typically manufactured by companies like **Taiyo Yuden** (MCOIL™ series). These inductors are known for using metal core materials to achieve high current ratings in a compact footprint. --- ### 1. Key Technical Specifications The following table highlights the general characteristics of the MA12FAD-R series: | Parameter | Typical Value | | :--- | :--- | | **Component Type** | Metal Power Inductor (MCOIL™) | | **Package Size** | 1210 (Metric 3225) | | **Inductance Range** | Varies (e.g., 0.47µH to 4.7µH depending on full suffix) | | **Material** | Metal Magnetic Powder | | **Structure** | Multilayer / Metal Core | | **Operating Temp** | -40°C to +125°C | --- ### 2. Physical Dimensions The "12" in the part number usually refers to the EIA size code (1.2 x 1.0mm or 3.2 x 2.5mm depending on the specific manufacturer sub-series). * **Length:** 3.2 mm * **Width:** 2.5 mm * **Height:** ~1.2 mm (Low profile) --- ### 3. Core Features & Advantages 1. **High Current Capability:** Because it uses a metal core instead of traditional ferrite, it can handle higher saturation currents ($I_{sat}$) without a sharp drop in inductance. 2. **Magnetic Shielding:** The structure is naturally shielded, which reduces Electromagnetic Interference (EMI) with surrounding components. 3. **Low DC Resistance (DCR):** This leads to higher efficiency and less heat generation in power conversion stages. 4. **Compactness:** Designed specifically for mobile devices where PCB space is at a premium. --- ### 4. Common Applications The MA12FAD-R is primarily found in DC-DC converter circuits for: * **Smartphones & Tablets:** Power management ICs (PMIC). * **Wearables:** Smartwatches and fitness trackers. * **HDD/SSD:** Power supply lines for storage drives. * **IoT Modules:** Compact wireless sensors. --- ### 5. Identification Logic When reading the part number: * **MA:** Series name (Metal Inductor). * **12:** Dimensions (Size code). * **FAD:** Material/Design characteristics. * **R:** Packaging type (usually Tape & Reel).