The **AS20-R22K-RC** is a high-performance, radial-leaded power inductor commonly used in power management and filtering applications. It is designed to handle significant current while maintaining a compact physical footprint. --- ### 1. Technical Specifications The following table summarizes the core electronic characteristics of the AS20-R22K-RC: | Parameter | Specification | | :--- | :--- | | **Inductance** | 0.22 µH (Microhenries) | | **Tolerance** | ±10% (K) | | **Current Rating (Irms)** | High current capacity (typ. 10A - 20A depending on temp rise) | | **DC Resistance (DCR)** | Extremely low (typically < 2.0 mΩ) | | **Termination Style** | Through-hole (Radial) | | **Packaging** | Bulk or Ammo Pack | --- ### 2. Key Features * **High Saturation Current:** Designed to maintain inductance levels even under high peak current conditions, preventing magnetic saturation. * **Low DCR:** The use of thick copper windings ensures minimal power loss through heat, increasing the overall efficiency of the power supply. * **Robust Construction:** Usually features a ferrite core with a protective coating or sleeve to provide mechanical durability and environmental protection. * **RoHS Compliant:** The "-RC" suffix indicates that the part is Lead-Free and complies with RoHS standards. --- ### 3. Typical Applications This component is typically found in the following electronic circuits: 1. **Switching Power Supplies (SMPS):** Used as an output filter inductor to smooth out current ripples. 2. **DC-DC Converters:** Acts as an energy storage element in buck, boost, or buck-boost topologies. 3. **Voltage Regulator Modules (VRM):** Common in motherboard and server power delivery systems. 4. **EMI/RFI Filtering:** Used to suppress high-frequency noise in power lines. --- ### 4. Circuit Symbol and Footprint ```text (L) Inductor ____ ____ ---| |____| |--- |____| |____| Radial Layout: [ o o ] <-- Lead Spacing (P) ```