The **AMPLH7020S-R33M** is a high-performance, surface-mount (SMD) power inductor. This component belongs to the category of magnetic energy storage devices, commonly used in voltage regulation circuits. --- ## 1. Technical Specifications The part number follows a specific nomenclature used by manufacturers (like Coilmaster or similar magnetic component specialists). Here is a breakdown of its core characteristics: | Parameter | Specification | Details | |:---|:---|:---| | **Inductance** | 0.33 µH | Measured at 100kHz, 1V | | **Tolerance** | ±20% | Denoted by the "M" at the end | | **DCR (Direct Current Resistance)** | ~1.6 mΩ (Max) | Very low resistance to minimize heat loss | | **Isat (Saturation Current)** | ~25 - 30 A | The current level where inductance drops by 30% | | **Irms (Rated Current)** | ~18 - 22 A | Current causing a 40°C temperature rise | | **Dimensions** | 7.0 x 6.6 x 2.0 mm | Compact, low-profile footprint | --- ## 2. Key Features * **Molded Construction:** The "AMPLH" series typically uses a metal alloy powder core. This provides high saturation current and shielding against Electromagnetic Interference (EMI). * **Low Profile:** With a height of roughly 2.0mm, it is ideal for thin consumer electronics. * **High Efficiency:** The extremely low DCR ensures minimal power dissipation, making it suitable for high-efficiency power supplies. * **Shielded Design:** The molded body acts as a natural shield, reducing magnetic flux leakage. --- ## 3. Common Applications This specific inductor is designed for high-current DC-DC converters. Typical use cases include: 1. **Motherboards & Servers:** CPU/GPU core power supplies (Vcore). 2. **Mobile Electronics:** High-efficiency power modules for tablets and laptops. 3. **Telecom:** Distributed power systems and base stations. 4. **FPGA/ASIC Powering:** Providing clean, high-current power to logic gates. --- ## 4. Part Number Breakdown To understand the component variants, use this guide: | Code | Meaning | |:---|:---| | **AMPLH** | Series Name (Molded High Current Inductor) | | **7020** | Size (7.0mm Length / 2.0mm Height) | | **S** | Standard Material/Base Type | | **R33** | Inductance Value (R33 = 0.33 µH) | | **M** | Tolerance (M = ±20%) |