The **MA2HTAA-R** is a specific part number belonging to the **MA series** of high-frequency, high-performance power inductors manufactured by **TDK (specifically the TDK-Micromagnetics division)**. These are often used in compact power management circuits. --- ## 1. Component Overview The MA2HTAA-R is an **SMD (Surface Mount Device) Power Inductor**. It is designed for use in DC-DC converters where high efficiency and miniaturization are critical. ### Key Technical Specifications | Parameter | Typical Value / Description | | :--- | :--- | | **Inductance** | Usually 1.0 $\mu$H to 2.2 $\mu$H (Part specific) | | **Tolerance** | $\pm$20% (M) | | **Operating Temp** | -40°C to +125°C | | **Material** | Metal Magnetic Material (Thin-film) | | **Packaging** | Tape & Reel (indicated by the "-R") | | **Mounting** | SMD / SMT | --- ## 2. Core Features * **Thin-Film Technology:** Unlike traditional wire-wound inductors, these use a thin-film process that allows for a much lower profile and better performance at high frequencies. * **High Current Handling:** Despite its small size, the metal magnetic core provides high saturation current ($I_{sat}$), meaning the inductance doesn't drop sharply as current increases. * **Magnetic Shielding:** The structure is naturally shielded, reducing Electromagnetic Interference (EMI) with neighboring components on a dense PCB. * **Low DC Resistance (DCR):** Designed to minimize power loss due to heat, improving overall battery life in portable devices. --- ## 3. Applications These inductors are primarily found in high-density electronic assemblies: 1. **Smartphones & Tablets:** For CPU/GPU power rails. 2. **Wearables:** Due to the ultra-low profile height. 3. **SSD Drives:** Used in the power management unit (PMU) of solid-state storage. 4. **IoT Modules:** Where space is extremely limited but power efficiency is required. --- ## 4. Typical Internal Structure ```text [ Protective Coating ] ---------------------- [ Thin-film Coil ] <-- Micro-fabricated copper spiral ---------------------- [ Metal Magnetic Core] <-- Composite material for high flux ---------------------- [ Termination Pads ] <-- Bottom electrodes for soldering ``` --- ## 5. Part Number Breakdown (MA2HTAA-R) * **MA:** Series Name (Thin-film Power Inductor). * **2HT:** Specific size code (e.g., 2.5mm x 2.0mm footprint). * **AA:** Internal design/revision code. * **-R:** Packaging code (Tape and Reel).