The **AISC-0805-R56** is a specific electronic component belonging to the family of **Surface Mount Device (SMD) Fixed Inductors**. It is primarily used in high-frequency circuits for signal filtering and impedance matching. Below is a detailed breakdown of its specifications and characteristics. --- ### 1. Part Number Deciphering Understanding the naming convention helps identify the physical and electrical properties: | Segment | Meaning | Detail | | :--- | :--- | :--- | | **AISC** | Series Name | High-frequency ceramic wire-wound chip inductor. | | **0805** | Case Size | Dimensions in inches (approx. 2.0 x 1.25 mm). | | **R56** | Inductance Value | "R" acts as a decimal point. **0.56 µH (560 nH)**. | --- ### 2. Key Technical Specifications While exact values can vary slightly by manufacturer (commonly produced by **Abracon**), the standard parameters for the R56 (560 nH) model are: | Parameter | Typical Value | | :--- | :--- | | **Inductance** | 560 nH (0.56 µH) | | **Tolerance** | Usually ±5% (J) or ±10% (K) | | **Quality Factor (Q min)** | 45 at 100 MHz | | **Self-Resonant Frequency (SRF)** | ~450 MHz | | **DC Resistance (DCR Max)** | 1.33 Ω | | **Rated Current (Idc)** | ~400 mA | | **Operating Temperature** | -40°C to +125°C | --- ### 3. Construction and Features * **Ceramic Core:** Unlike ferrite cores, the ceramic core provides excellent stability and a high Self-Resonant Frequency (SRF), making it ideal for RF applications. * **Wire-Wound Technology:** The copper wire is wound around the ceramic body, which allows for higher Q-factors and lower DC resistance compared to multilayer inductors. * **Small Footprint:** The 0805 package is standard for automated PCB assembly (SMT). --- ### 4. Common Applications * **RF/Wireless Communication:** Used in Bluetooth, Wi-Fi, and cellular modules. * **Impedance Matching:** Ensuring maximum power transfer between stages in an RF amplifier. * **Filtering:** Acting as a low-pass or band-pass filter to remove unwanted noise from high-frequency signals. * **Oscillators:** Used in LC tank circuits to set specific frequencies. ---