The **MA1HFAG-R** is a high-frequency, surface-mount magnetic component, specifically a **Molded Power Inductor** manufactured by **Laird Performance Materials** (part of the Stellar series). It is designed for high-density power applications where space is limited and efficiency is critical. --- ### ## Technical Specifications Below are the typical electrical and physical characteristics for the MA1HFAG-R series: | Parameter | Specification | | :--- | :--- | | **Inductance** | 1.0 µH (Standard for this series) | | **Tolerance** | ±20% | | **Case Size** | 2520 (2.5mm x 2.0mm) | | **Rated Current (Irms)** | Up to 4.5A (depending on temp rise) | | **Saturation Current (Isat)** | Up to 5.2A | | **DC Resistance (DCR)** | ~35 mΩ (Typical) | | **Operating Temp** | -40°C to +125°C | | **Shielding** | Magnetically Shielded | --- ### ### Key Features 1. **Molded Construction:** The coil is embedded in a metallic iron powder core. This design offers a "soft" saturation characteristic, meaning the inductance doesn't drop abruptly when the current increases. 2. **Magnetic Shielding:** The molded design naturally provides electromagnetic interference (EMI) shielding, which is vital for preventing noise in compact circuits like smartphones or tablets. 3. **Low Profile:** The "G" in the suffix often denotes a specific height profile (usually around 1.0mm to 1.2mm), making it suitable for ultra-thin electronic assemblies. 4. **High Efficiency:** Designed with low DCR to minimize power loss through heat, which extends battery life in portable devices. --- ### ### Applications The MA1HFAG-R is primarily used in **DC-DC Converters** for the following devices: * **Mobile Electronics:** Smartphones, tablets, and wearables. * **Computing:** Laptops and SSD power rails. * **IoT Modules:** High-frequency switching power supplies for sensors and wireless modules. --- ### ### Typical Circuit Implementation In a standard Buck (Step-Down) Converter, the MA1HFAG-R is placed between the switching node and the output capacitor. ```markdown SW Node (IC) ----[ MA1HFAG-R ]----+---- V_out | [ C_out ] | GND ``` ---