The **MA1HFBD-R** is a high-performance, shielded power inductor manufactured by **Delta Electronics**. It is primarily designed for high-frequency DC-DC converters and voltage regulator modules (VRMs). --- ### ## Technical Specifications Below are the typical electrical and physical characteristics of the MA1HFBD-R series (specifically common in the 1.0µH to 2.2µH range). | Feature | Description | | :--- | :--- | | **Component Type** | Shielded Power Inductor | | **Manufacturer** | Delta Electronics | | **Material** | Metal Alloy / Carbonyl Powder | | **Tolerance** | ±20% | | **Operating Temperature** | -40°C to +125°C | | **Shielding** | Magnetically Shielded (Low EMI) | | **Mounting Type** | Surface Mount (SMD/SMT) | --- ### ### Core Features 1. **High Current Handling:** Due to the metal alloy powder core, these inductors handle high saturation currents without a sharp drop in inductance. 2. **Low DCR (DC Resistance):** Designed with flat-wire or optimized winding technology to minimize power loss and heat generation. 3. **EMI Shielding:** The molded construction significantly reduces electromagnetic interference, making it suitable for densely packed PCBs. 4. **Compact Footprint:** Part of the "M" series which focuses on a low-profile design for mobile and thin-client applications. --- ### ### Common Applications The MA1HFBD-R is typically found in circuits where efficiency and space are critical: * **Notebooks and Tablets:** Powering CPUs and GPUs. * **POL (Point of Load) Converters:** Converting higher bus voltages to low voltage for ICs. * **Servers:** Used in high-density VRM modules. * **Telecom:** DC-DC power supplies in networking equipment. --- ### ### Typical Circuit Representation In a standard Buck Converter circuit, the inductor is placed between the switching node and the output capacitor. ```spice * Basic Buck Converter Placement Vin --- [Switch/MOSFET] ---+--- [MA1HFBD-R] --- Vout | (L) [Diode] [Capacitor] | | GND GND ``` ---