## SD25-1R2-R Electronic Component Overview The **SD25-1R2-R** is a high-power density, low-profile shielded inductor manufactured by **Eaton (formerly Cooper Bussmann)**. It belongs to the SD series, which is designed for applications requiring compact size and high efficiency. --- ### 1. Technical Specifications The following table summarizes the core electrical and physical characteristics: | Parameter | Value | | :--- | :--- | | **Inductance** | 1.2 µH | | **Tolerance** | ±20% | | **Current Rating (Irms)** | 3.34 Amps | | **Saturation Current (Isat)** | 4.88 Amps | | **DC Resistance (DCR)** | 22.8 mΩ (Typical) | | **Operating Temperature** | -40°C to +125°C | | **Shielding** | Magnetically Shielded | | **Package / Case** | 5.2mm x 5.2mm x 2.5mm | --- ### 2. Key Features * **Magnetic Shielding:** The component is shielded to minimize Electromagnetic Interference (EMI), making it ideal for densely packed circuit boards. * **Low Profile:** With a maximum height of 2.5mm, it is suitable for thin electronic devices. * **Ferrite Core:** Utilizes a ferrite core material for high frequency and low core losses. * **RoHS Compliant:** The "-R" suffix indicates that the part is lead-free and complies with RoHS standards. --- ### 3. Common Applications Due to its high current handling and small footprint, the SD25-1R2-R is commonly used in: 1. **DC-DC Converters:** Buck, Boost, and SEPIC topologies. 2. **Mobile Electronics:** Smartphones, tablets, and handheld gaming consoles. 3. **Computer Peripherals:** SSDs, network cards, and portable hard drives. 4. **LED Drivers:** Providing stable current for high-brightness LEDs. --- ### 4. Part Number Breakdown Understanding the nomenclature helps in identifying variants: * **SD:** Series Name (Shielded Drum) * **25:** Dimensions (approx. 5.2 x 5.2 x 2.5mm) * **1R2:** Inductance Value (1.2 microhenries) * **-R:** RoHS Compliant