### SD3114-8R2-R Electronic Component Overview The **SD3114-8R2-R** is a low-profile, shielded surface-mount (SMD) power inductor. It is part of the SD3114 series manufactured by **Eaton (formerly Cooper Bussmann)**. These inductors are specifically designed for applications where space is limited and electromagnetic interference (EMI) must be minimized. --- ### Key Specifications Below are the technical parameters that define the performance of the SD3114-8R2-R: | Parameter | Value | | :--- | :--- | | **Inductance** | 8.2 µH | | **Tolerance** | ±20% | | **Current Rating (Irms)** | 0.94 A (Typical) | | **Saturation Current (Isat)** | 0.82 A | | **DC Resistance (DCR)** | 0.235 Ω (Typical) | | **Operating Temperature** | -40°C to +125°C | | **Package / Case** | 3.1mm x 3.1mm x 1.4mm | | **Shielding** | Shielded (Ferrite Core) | --- ### Core Features and Construction 1. **Magnetic Shielding:** The component features a ferrite drum and ring core construction. This "shielding" ensures that the magnetic flux is contained within the component, reducing interference with neighboring components on the PCB. 2. **Low Profile:** With a height of only **1.4mm**, it is ideal for ultra-thin electronics like smartphones, tablets, and wearable devices. 3. **High Power Density:** Despite its small footprint (3.1mm footprint), it handles a relatively high current for its size. 4. **RoHS Compliant:** The "-R" suffix indicates that the part is lead-free and complies with RoHS standards. --- ### Typical Applications This inductor is commonly used in power management circuits, specifically: * **DC-DC Converters:** Used as energy storage elements in Buck (step-down) or Boost (step-up) converters. * **Mobile Devices:** Powering CPUs or peripheral rails in handheld electronics. * **LED Drivers:** Providing stable current for display backlighting. * **Noise Filtering:** Used in LC filters to smooth out ripple voltage in power lines. --- ### Footprint Example (Recommended Land Pattern) ```markdown [3.20mm] <------> +------+ --- | [PAD] | ^ | | 3.20mm | [PAD] | v +------+ --- ``` *(Note: Always refer to the official Eaton datasheet for exact PCB land pattern dimensions before manufacturing.)*