The **SD12-150-R** is a high-performance, low-profile power inductor manufactured by **Eaton (formerly Cooper Bussmann)**. It belongs to the SD series of surface-mount (SMD) power inductors known for their high power density and electromagnetic shielding. --- ### ## Technical Specifications Below are the primary electrical and physical characteristics of the SD12-150-R: | Parameter | Specification | | :--- | :--- | | **Inductance** | 15.0 µH | | **Tolerance** | ±20% | | **DC Resistance (DCR)** | 0.288 Ω (Typical) | | **RMS Current ($I_{rms}$)** | 0.88 Amps | | **Saturation Current ($I_{sat}$)** | 0.85 Amps | | **Operating Temperature** | -40°C to +125°C | | **Size / Dimension** | 5.2mm x 5.2mm x 1.2mm | | **Shielding** | Shielded (Ferrite Core) | --- ### ## Key Electronic Features 1. **Magnetic Shielding:** The inductor is magnetically shielded, which minimizes Electromagnetic Interference (EMI). This is critical for high-density circuit boards where components are placed close together. 2. **Low Profile (1.2mm Height):** The "12" in the part number refers to its maximum height of 1.2mm. This makes it ideal for ultra-thin electronics like smartphones, tablets, and wearable sensors. 3. **Ferrite Core Construction:** The use of a ferrite drum core ensures high efficiency and low core losses at high frequencies, typically used in DC-DC converters. 4. **RoHS Compliant:** The "-R" suffix indicates that the part is lead-free and complies with RoHS standards for environmental safety. --- ### ## Common Applications The SD12-150-R is designed for power management circuits, specifically: * **Buck/Boost Converters:** Used as energy storage elements in DC-to-DC voltage regulation. * **LED Drivers:** Providing stable current for backlighting or lighting modules. * **Portable Devices:** Due to its small footprint, it is found in digital cameras, MP3 players, and mobile handhelds. * **Computer Peripherals:** Used in hard disk drives and solid-state drives (SSDs). --- ### ## Component Decoding To understand the part number breakdown: * **SD:** Series name (Shielded Drum Inductor). * **12:** Height code (approx. 1.2 mm). * **150:** Inductance code (15 followed by 0 zeros = 15.0 µH). * **-R:** RoHS compliant.