The **47DR-1019-R** is a specific electronic component, typically categorized as a **High-Current Power Choke** or **Inductor**, often manufactured by companies like **Coiltronics (Eaton)**. These components are designed for high-density power conversion circuits. --- ### Technical Specifications The following table highlights the typical characteristics associated with the 47DR series high-current inductors: | Parameter | Description / Typical Value | | :--- | :--- | | **Component Type** | Drum Core Power Inductor (Unshielded) | | **Inductance** | 100 µH (indicated by "101") | | **Current Rating** | High Current (DC) | | **Mounting Type** | Through-hole (Radial Leads) | | **RoHS Status** | Compliant (indicated by the "-R" suffix) | | **Material** | Ferrite core with copper winding | --- ### Key Features 1. **Drum Core Design:** The "DR" in the part number stands for **Drum Core**. This geometry allows for a high saturation current in a relatively small footprint. 2. **RoHS Compliance:** The **-R** suffix signifies that the part is lead-free and meets environmental safety standards. 3. **High Efficiency:** These inductors are designed for low DC Resistance (DCR), which minimizes power loss through heat. 4. **Rugged Construction:** Built to withstand industrial temperature ranges and high-vibration environments. --- ### Common Applications The 47DR-1019-R is generally used in power management circuits where filtering or energy storage is required: * **Switching Regulators:** Used to smooth out voltage ripples in DC-DC converters. * **Power Supplies:** Common in industrial and consumer electronics power bricks. * **EMI Filtering:** Acts as a low-pass filter to block high-frequency noise in power lines. * **LED Drivers:** Used to maintain constant current flow in lighting applications. --- ### Part Number Breakdown Understanding the nomenclature helps in identifying similar components: * **47DR:** The series designation (Drum Core, size/style 47). * **101:** The inductance value. The first two digits are the significant figures, and the third is the multiplier ($10 \times 10^1 = 100 \mu H$). * **9:** Often refers to a specific mechanical tolerance or lead configuration. * **-R:** RoHS compliant (Lead-free).