## DR1030-470-R: Electronic Component Overview The **DR1030-470-R** is a high-performance, shielded power inductor manufactured by **Eaton (formerly Coiltronics)**. It is part of the DR Series, which is widely used in DC-DC converters and power management circuits. --- ### 1. Key Technical Specifications The part number itself contains encoded information about its physical size and electrical properties. | Parameter | Specification | | :--- | :--- | | **Inductance** | 47 $\mu$H | | **Tolerance** | ±20% | | **DC Resistance (DCR)** | 0.207 $\Omega$ (Max) | | **Rated Current (Irms)** | 1.16 Amps | | **Saturation Current (Isat)** | 1.10 Amps | | **Shielding** | Magnetically Shielded | | **Operating Temperature** | -40°C to +125°C | --- ### 2. Physical Dimensions The "1030" in the part number refers to the surface mount (SMD) package dimensions: * **Length:** 10.5 mm * **Width:** 10.3 mm * **Height:** 3.0 mm (Max) --- ### 3. Core Features and Benefits * **Magnetic Shielding:** The ferrite drum core is enclosed in a sleeve, which minimizes Electro-Magnetic Interference (EMI) with surrounding components. * **Low Profile:** The 3.0 mm height makes it ideal for thin electronic devices like tablets and laptops. * **High Power Density:** Provides high energy storage in a relatively small footprint. * **RoHS Compliant:** The "-R" suffix indicates compliance with lead-free and environmental regulations. --- ### 4. Typical Applications The DR1030-470-R is commonly found in the following circuits: 1. **DC-DC Converters:** Used as an energy storage element in Buck (Step-down), Boost (Step-up), and SEPIC topologies. 2. **Point of Load (POL):** Powering CPUs, FPGAs, and ASICs on motherboards. 3. **Battery Powered Devices:** Efficient power management for portable electronics. 4. **LED Lighting:** Providing stable current for high-brightness LED drivers. --- ### 5. Identification Code Breakdown ```text DR 1030 - 470 - R | | | | | | | +-- RoHS Compliant | | +------- Inductance (47 + 0 zeros = 47μH) | +------------- Dimensions (10x10x3mm) +----------------- Series Name (Drum Core) ```