## Overview of SRP4012CC-R47M The **SRP4012CC-R47M** is a high-current, shielded power inductor manufactured by **Bourns**. It is part of the SRP4012CC series, specifically designed for high-density power applications where space and efficiency are critical. --- ### 1. Part Number Breakdown Understanding the nomenclature helps in identifying the specific technical characteristics: | Code Segment | Meaning | Specification | | :--- | :--- | :--- | | **SRP** | Series Name | High current shielded power inductor | | **4012** | Dimensions | ~4.0 x 4.0 x 1.2 mm | | **CC** | Material/Design | Carbonyl powder core (High saturation) | | **R47** | Inductance Value | 0.47 µH | | **M** | Tolerance | ±20% | --- ### 2. Key Technical Specifications The electrical behavior of this component is defined by its ability to handle high frequency and high current without significant energy loss. * **Inductance:** 0.47 µH * **DC Resistance (DCR):** ~11 mΩ (typical) / 13 mΩ (maximum) * **Heating Current ($I_{rms}$):** ~7.5 Amperes (current causing 40°C temp rise) * **Saturation Current ($I_{sat}$):** ~10.5 Amperes (current causing 30% drop in inductance) * **Operating Temperature:** -55°C to +125°C * **Construction:** Metal alloy powder core (Shielded) --- ### 3. Core Features and Benefits * **Magnetic Shielding:** The molded construction minimizes EMI (Electromagnetic Interference), making it suitable for noise-sensitive circuits. * **Low Profile:** With a height of only 1.2 mm, it is ideal for ultra-thin electronics like tablets and smartphones. * **High Saturation:** Unlike ferrite inductors, the carbonyl powder core provides a "soft saturation" curve, meaning it doesn't lose inductance abruptly when current spikes. * **AEC-Q200 Compliance:** Often used in automotive applications due to its ruggedness and stability under thermal stress. --- ### 4. Typical Applications This component is commonly found in the following electronic circuits: 1. **DC/DC Converters:** Voltage regulation in laptops and handheld devices. 2. **Power Supplies:** High-frequency switching regulators. 3. **Automotive Electronics:** Infotainment systems and driver assistance sensors. 4. **Telecom:** Base station power modules. ---