The **JFX1-165-R** is a high-performance, shielded power inductor manufactured by **Eaton (formerly Coiltronics)**. It is part of the JFX series, specifically designed for high-frequency power conversion applications. --- ### ## Technical Specifications Below are the primary electrical and physical characteristics of the JFX1-165-R: | Parameter | Specification | | :--- | :--- | | **Inductance** | 16.5 µH | | **Tolerance** | ±20% | | **Current Rating (Irms)** | Approximately 4.0 A to 5.5 A (Load dependent) | | **Saturation Current (Isat)** | High saturation capability | | **DC Resistance (DCR)** | Low (optimized for efficiency) | | **Operating Temperature** | -40°C to +125°C | | **Shielding** | Magnetically Shielded | | **Termination** | Surface Mount (SMD) | --- ### ## Key Features 1. **Magnetic Shielding:** The component is shielded to minimize Electromagnetic Interference (EMI), which is critical for dense PCB layouts where components are placed close together. 2. **High Power Density:** Designed to handle significant current in a small footprint, making it ideal for compact electronic devices. 3. **Low Core Loss:** Utilizes advanced core materials that reduce energy dissipation as heat, increasing the overall efficiency of the power supply. 4. **RoHS Compliant:** The "-R" suffix indicates that the part is lead-free and complies with RoHS standards. --- ### ## Common Applications The JFX1-165-R is typically used in circuits where stable voltage and noise suppression are required: * **DC-DC Converters:** Used as a storage inductor in buck, boost, or buck-boost regulators. * **Voltage Regulator Modules (VRMs):** Found in computing and server hardware to provide clean power to processors. * **LED Drivers:** Used to maintain constant current in lighting applications. * **Consumer Electronics:** Integrated into tablets, laptops, and handheld gaming consoles. * **Industrial Power Supplies:** Used in filtering stages to reduce ripple current. --- ### ## Structural Design The inductor features a flat-wire or specialized winding construction inside a composite molded body. This construction helps in achieving a low profile (height) while maintaining high current-carrying capacity without the risk of "buzz" noise common in unshielded inductors.