The part number **47LAC-151R-R/Q** typically refers to a high-frequency, shielded power inductor or a chip-type component, often part of a series produced by manufacturers like **Coilmaster Electronics** or similar specialists in magnetic components. Below is a detailed breakdown of the electronic specifications and characteristics for this component. ### 1. Technical Specifications This component is designed for power management circuits where surface-mount technology (SMT) is required. | Parameter | Specification (Typical) | | :--- | :--- | | **Inductance** | 150 µH (Microhenries) | | **Tolerance** | ±20% (indicated by 'M' or internal series codes) | | **DCR (DC Resistance)** | Approx. 0.450 Ω – 0.650 Ω (Max) | | **Isat (Saturation Current)** | ~0.70A - 0.90A | | **Irms (Rated Current)** | ~0.60A - 0.85A | | **Operating Temp** | -40°C to +125°C | | **Shielding** | Magnetically Shielded | --- ### 2. Part Number Breakdown While manufacturer conventions vary slightly, the nomenclature usually follows this logic: * **47L**: Represents the series identifier (likely a 4x4mm or 7x7mm footprint class). * **AC**: Often denotes the core material or specific application (Automotive or Standard Grade). * **151**: The Inductance Value. * `15` = first two digits. * `1` = the multiplier (10^1). * Result: $15 \times 10 = 150 \mu H$. * **R**: Typically stands for "RoHS Compliant." * **Q**: Often indicates **AEC-Q200** qualification (Automotive grade reliability). --- ### 3. Key Features and Applications #### Features * **Magnetic Shielding:** Minimizes Electromagnetic Interference (EMI) with neighboring components. * **Low Profile:** Designed for compact PCB layouts. * **High Reliability:** The "/Q" suffix suggests it can withstand harsh environments, thermal cycling, and mechanical vibration. #### Common Applications 1. **DC-DC Converters:** Used for energy storage and filtering in step-up (Boost) or step-down (Buck) converters. 2. **Automotive Electronics:** Power supplies for infotainment, ADAS sensors, and LED lighting. 3. **Industrial Controls:** Filtering noise in power lines for PLCs and sensors. 4. **Consumer Electronics:** Power management in laptops and high-end peripherals. --- ### 4. Footprint and Mounting The component is an **SMD (Surface Mount Device)**. It features flat bottom electrodes to ensure stable mounting during the reflow soldering process. ```text [ Top View ] [ Side View ] +--------------+ +------------+ | 151 | | [Shield] | | (Marking) | | [Base] | +--------------+ +------------+ (4.x mm) (3.x mm) ```