The **AS20-R33K-RC** is a high-performance, shielded power inductor part of the AS20 series. These components are designed for high-density surface mount applications where space is limited and electromagnetic interference (EMI) must be minimized. --- ### 1. Technical Specifications The following table highlights the primary electrical and physical characteristics of the AS20-R33K-RC: | Parameter | Specification | | :--- | :--- | | **Inductance** | 0.33 µH | | **Tolerance** | ±10% (K) | | **Current Rating (Isat)** | Typically 1.5A - 2.0A | | **DC Resistance (DCR)** | Low (approx. 0.05 - 0.10 Ω) | | **Shielding** | Magnetically Shielded | | **Mounting Type** | Surface Mount Device (SMD/SMT) | | **RoHS Status** | Compliant (RC suffix) | --- ### 2. Key Features * **Magnetic Shielding:** The part is constructed with a ferrite shield that closes the magnetic loop. This prevents the magnetic field from interfering with adjacent sensitive components on the PCB. * **Compact Footprint:** Designed for high-density layouts, making it suitable for modern miniaturized electronics. * **High Saturation Current:** Engineered to maintain stable inductance even as the DC current passing through it increases. * **Heat Resistance:** Built to withstand the high temperatures of reflow soldering processes. --- ### 3. Common Applications This inductor is typically used in power management circuits, specifically: 1. **DC-DC Converters:** Used for energy storage in buck, boost, or buck-boost regulators. 2. **Mobile Devices:** Found in smartphones and tablets due to its small size and EMI shielding. 3. **Filtering:** Used in input/output filters to smooth out voltage ripples and reduce noise in digital circuits. 4. **Computer Peripherals:** Applied in hard drives, SSDs, and networking cards. --- ### 4. Part Number Breakdown Understanding the nomenclature helps in identifying variants: * **AS20:** The series designation (refers to the physical size/package). * **R33:** Represents the inductance value (0.33 µH). "R" acts as the decimal point. * **K:** Represents the tolerance (±10%). * **RC:** Indicates RoHS Compliance (Lead-free).