The **SD6030-221-R** is a high-performance, surface-mount (SMD) power inductor commonly used in DC-DC converters and power management circuits. It is manufactured by **Eaton (formerly Cooper Bussmann)**. --- ## 1. Technical Specifications The part number follows a specific nomenclature where "6030" refers to the dimensions and "221" refers to the inductance value. | Parameter | Specification | | :--- | :--- | | **Inductance** | 220 µH | | **Inductance Tolerance** | ±20% | | **DC Resistance (DCR)** | ~0.742 Ω (Typical) | | **Isat (Saturation Current)** | ~0.62 Amps | | **Irms (Rated Current)** | ~0.65 Amps | | **Dimensions (L x W x H)** | 6.0mm x 6.0mm x 3.0mm | | **Shielding** | Shielded (Magnetic) | | **Operating Temperature** | -40°C to +125°C | --- ## 2. Key Features and Construction * **Magnetic Shielding:** The inductor is magnetically shielded, which minimizes Electromagnetic Interference (EMI) with surrounding components. This makes it ideal for high-density PCB layouts. * **Ferrite Core:** It utilizes a ferrite core construction, providing high efficiency and low core losses at switching frequencies. * **Reflow Compatibility:** Designed for infrared (IR) and vapor phase reflow soldering processes. * **RoHS Compliant:** The "-R" suffix indicates that the part is lead-free and complies with RoHS standards. --- ## 3. Common Applications This specific inductor value (220 µH) is typically used for filtering and energy storage in: 1. **Buck/Boost Converters:** Stepping voltage up or down in battery-powered devices. 2. **LED Drivers:** Maintaining constant current for lighting applications. 3. **LCD Displays:** Powering backlighting modules. 4. **Computer Peripherals:** Localized power regulation on motherboards or expansion cards. --- ## 4. Part Number Breakdown ```text SD 60 30 - 221 - R | | | | | | | | | +-- RoHS Compliant | | | +------- Inductance Value (22 + 1 zero = 220uH) | | +------------ Height (3.0 mm) | +--------------- Width/Length (6.0 mm) +------------------ Product Series (Standard Drum Inductor) ```