The **JFX1-156-R** is a high-performance power inductor, part of the JFX series manufactured by specialized magnetic component suppliers (most notably **Coilmaster Electronics**). It is designed specifically for high-current applications where space and efficiency are critical. ### Technical Specifications Below are the primary electrical and physical characteristics typically associated with the JFX1-156-R: | Parameter | Specification (Typical) | | :--- | :--- | | **Inductance** | 15.0 µH (±20%) | | **DCR (DC Resistance)** | ~35 mΩ (Max) | | **Isat (Saturation Current)** | ~6.0 - 7.5 A | | **Irms (Rated Current)** | ~5.0 - 6.5 A | | **Operating Temperature** | -40°C to +125°C | | **Package Size** | 10.0mm x 11.5mm x 4.0mm (approx.) | | **Material** | Metal Alloy / Shielded Construction | --- ### Key Features 1. **Shielded Construction:** The part features a magnetic shield that minimizes Electromagnetic Interference (EMI), making it suitable for noise-sensitive environments like medical or communication equipment. 2. **Metal Alloy Core:** Unlike traditional ferrite cores, the JFX series uses a molded metal powder. This allows for a "soft saturation" characteristic, meaning the inductance drops gradually rather than sharply when the current increases. 3. **Low Profile:** The "156" in the part number often refers to the physical dimensions or a specific series footprint that prioritizes a low height-to-performance ratio. 4. **High Efficiency:** Low DC resistance (DCR) minimizes power loss through heat, which is vital for battery-powered devices. --- ### Common Applications The JFX1-156-R is used in circuits requiring stable power regulation under varying loads: * **DC/DC Converters:** Used as the energy storage element in buck (step-down) or boost (step-up) converters. * **Motherboards & Servers:** Distributed power systems where high current is required in a small footprint. * **Automotive Electronics:** Infotainment systems and LED lighting drivers. * **Consumer Electronics:** High-end laptops and gaming consoles. --- ### Equivalent Part Number Structure If you are sourcing this part, the nomenclature usually breaks down as follows: * **JFX:** Series Code (High Current Power Inductor). * **1:** Dimension or Revision code. * **156:** Often represents the Inductance value ($15 \times 10^0 = 15 \mu H$ or a specific size code). * **R:** Denotes the tolerance or packaging (usually "RoHS" compliant or "Reel" packaging).