### SD52-151-R: Electronic Component Overview The **SD52-151-R** is a high-power density, low-profile, shielded drum core inductor. It is part of the SD52 series manufactured by **Eaton (formerly Bussmann)**. These inductors are designed for applications requiring compact size and high efficiency. --- ### 1. Technical Specifications Below are the primary electrical and physical characteristics of the SD52-151-R: | Parameter | Specification | | :--- | :--- | | **Inductance** | 150 µH | | **Tolerance** | ±20% | | **Rated Current (DC)** | 0.51 Amps (typical) | | **Saturation Current (Isat)** | 0.62 Amps (typical) | | **DC Resistance (DCR)** | 0.812 Ohms (typical) | | **Shielding** | Magnetically Shielded | | **Package / Case** | 5.2mm x 5.2mm x 2.0mm (SMD) | | **Operating Temperature** | -40°C to +125°C | --- ### 2. Core Features * **Magnetic Shielding:** The component is shielded, which minimizes Electromagnetic Interference (EMI). This is critical for densely packed circuit boards where noise can affect nearby components. * **Ferrite Drum Core:** Constructed using a ferrite core which provides high permeability and low core losses at high frequencies. * **Low Profile:** With a height of only 2.0mm, it is ideal for thin consumer electronics like smartphones, tablets, and wearables. * **RoHS Compliant:** The "-R" suffix indicates that the part is lead-free and meets RoHS standards. --- ### 3. Functional Identification (Part Number Breakdown) To understand the specific model: * **SD:** Series name (Shielded Drum). * **52:** Physical dimensions (approx. 5.2mm width/length). * **151:** Inductance code. The first two digits (15) are the value, and the third (1) is the multiplier (10^1). Thus, $15 \times 10 = 150 \mu H$. * **R:** RoHS compliant. --- ### 4. Common Applications The SD52-151-R is typically used in power management circuits, including: 1. **DC-DC Converters:** Used as an energy storage element in buck, boost, or buck-boost regulators. 2. **LED Drivers:** Providing constant current for lighting applications. 3. **Noise Filtering:** Acting as a low-pass filter to smooth out ripples in power supply lines. 4. **Battery Powered Devices:** Ideal for handheld electronics due to its small footprint and efficiency. ---