The **AS20-R47K-RC** is a specific electronic component identifier, typically representing a **Fixed Inductor** (Surface Mount Device - SMD). Based on the nomenclature used by manufacturers like *Abracon* or *Allied Components*, here is the detailed breakdown and technical specifications. ### 1. Part Number Deciphering The alphanumeric string provides specific details about the component's physical and electrical properties: | Segment | Meaning | Description | | :--- | :--- | :--- | | **AS20** | Series/Size | Refers to the physical dimensions (often 2.0mm height or specific package size). | | **R47** | Inductance Value | Represents **0.47 µH** (Microhenries). The "R" acts as a decimal point. | | **K** | Tolerance | Represents **±10%** variation allowed from the nominal value. | | **RC** | RoHS Compliant | Indicates the part is lead-free and meets environmental standards. | --- ### 2. Technical Specifications While exact specs can vary slightly by manufacturer, a standard 0.47µH inductor in this class generally follows these parameters: * **Inductance:** 0.47 µH * **Tolerance:** ±10% * **Case Style:** Molded or Shielded SMD (Surface Mount Device). * **Operating Temperature:** Typically -40°C to +125°C. * **DC Resistance (DCR):** Usually very low (mΩ range) to minimize power loss. * **Saturation Current:** The maximum current it can handle before the inductance drops significantly. --- ### 3. Applications and Use Cases This type of inductor is commonly found in power management circuits. * **DC-DC Converters:** Used for energy storage and filtering in "Buck" (step-down) or "Boost" (step-up) regulators. * **EMI Filtering:** Helps suppress high-frequency noise in power lines for sensitive electronics. * **Consumer Electronics:** Found in smartphones, tablets, and laptops due to its small footprint and efficiency. * **Voltage Regulator Modules (VRM):** Used on motherboards to stabilize CPU/GPU power. --- ### 4. Comparison Table: Inductance Codes To understand the "R47" notation, see how it compares to other common values: | Code | Value (µH) | | :--- | :--- | | **R10** | 0.10 µH | | **R47** | **0.47 µH** | | **1R0** | 1.0 µH | | **100** | 10 µH | ---