## AISC-0805-R22 Technical Overview The **AISC-0805-R22** is a surface-mount (SMD) wire-wound ceramic chip inductor. It is commonly used in high-frequency applications where high Q-factors and stable inductance values are required. --- ### 1. Key Technical Specifications Based on the part number, here is the breakdown of its core characteristics: | Parameter | Specification | | :--- | :--- | | **Inductance** | 220 nH (0.22 µH) | | **Tolerance** | ±5% (Standard for "J" suffix) | | **Case Size** | 0805 (Metric 2012) | | **Core Material** | Ceramic | | **Mounting Type** | Surface Mount (SMD/SMT) | --- ### 2. Part Number Breakdown Understanding the nomenclature helps identify the component's role in a circuit: * **AISC**: Series prefix (Wire-wound Chip Inductor). * **0805**: Physical dimensions (0.08 x 0.05 inches / 2.0 x 1.25 mm). * **R22**: Inductance value code. "R" acts as the decimal point. $0.22 \mu H = 220 nH$. --- ### 3. Electrical Performance Inductors of this type are chosen for their specific behavior in RF (Radio Frequency) circuits. Typical performance metrics for the 220nH variant include: | Metric | Typical Value | | :--- | :--- | | **Quality Factor (Q) Min** | 50 (at 250 MHz) | | **Self-Resonant Frequency (SRF)** | ~850 MHz | | **DC Resistance (DCR) Max** | 0.70 Ω | | **Rated Current (I-dc) Max** | 400 mA | --- ### 4. Common Applications Due to the ceramic core and wire-wound construction, this part is ideal for: * **RF Tuning:** Used in resonant circuits for wireless communication. * **Impedance Matching:** Essential for antenna circuitry to ensure maximum power transfer. * **Filtering:** High-frequency low-pass or band-pass filters. * **Signal Conditioning:** Decoupling and noise suppression in high-speed data lines. --- ### 5. Construction Benefits * **Ceramic Core:** Unlike ferrite cores, ceramic does not saturate, providing excellent stability across varying currents and temperatures. * **Wire-Wound:** Offers significantly higher Q-factors and lower DCR compared to multilayer chip inductors.