The **JFX1-41-R** is a high-performance, shielded power inductor part of the **JFX series** manufactured by Coilmaster Electronics. It is specifically designed for high-frequency DC-DC converter applications where space is limited and efficiency is critical. --- ## 1. Technical Specifications Below are the typical electrical and physical characteristics for the JFX1-41-R series: | Parameter | Value / Range | | :--- | :--- | | **Inductance Range** | 0.10µH to 2.2µH (Commonly) | | **Tolerance** | ±20% (M) | | **Footprint Size** | 4.1mm x 4.1mm | | **Height** | 1.1mm to 1.2mm (Low Profile) | | **Operating Temperature** | -40°C to +125°C | | **Shielding** | Magnetically Shielded (Metal Alloy) | --- ## 2. Key Features The JFX1-41-R is engineered with specific materials to handle modern electronic demands: ### A. Metal Alloy Construction Unlike traditional ferrite inductors, this part uses a **metal powder core**. This allows for: * **Soft Saturation:** The inductance drops gradually as current increases, rather than a sharp drop-off. * **High Current Handling:** It can handle higher peak currents relative to its small physical size. ### B. Magnetic Shielding The molded construction acts as a natural shield. This minimizes **Electromagnetic Interference (EMI)**, making it ideal for densely packed circuit boards where noise could interfere with nearby components. ### C. Low DCR (Direct Current Resistance) The internal copper windings are optimized to have very low resistance, which reduces power loss through heat and improves the overall battery life of portable devices. --- ## 3. Common Applications Due to its low profile and high efficiency, the JFX1-41-R is frequently found in: 1. **Smartphones and Tablets:** Used in power management integrated circuits (PMICs). 2. **Laptops/Ultrabooks:** For voltage regulation modules (VRM). 3. **IoT Devices:** Where compact size and high efficiency are mandatory. 4. **SSD Drives:** To manage power delivery to flash memory. --- ## 4. Part Number Breakdown While specific suffixes may vary, the naming convention generally follows: * **JFX:** Series Name (Molded Power Inductor). * **1:** Height/Dimension Code. * **41:** Size (4.1mm x 4.1mm). * **R:** Denotes the specific revision or "RoHS Compliant" status.