## Overview of AISC-0805-R33 The **AISC-0805-R33** is a surface-mount (SMD) wire-wound ceramic chip inductor. It is widely used in high-frequency applications due to its high Quality (Q) factor and stable performance across a broad frequency range. --- ### Technical Specifications The following table details the key electrical and physical characteristics of the component: | Parameter | Specification | Notes | | :--- | :--- | :--- | | **Inductance** | 0.33 µH (330 nH) | Measured at a specific test frequency | | **Tolerance** | ±5% (Standard) | Common tolerance for the 'J' suffix | | **Package Size** | 0805 (Metric 2012) | 2.0mm x 1.25mm footprint | | **Quality Factor (Q)** | 45 (Minimum) | Measured at 100 MHz | | **SRF (Self-Resonant Freq)** | 900 MHz (Minimum) | Frequency where it stops behaving as an inductor | | **DC Resistance (DCR)** | 0.63 Ω (Maximum) | Resistance to direct current | | **Rated Current (Idc)** | 400 mA (Maximum) | Max current before significant heating | --- ### Key Construction Features * **Wire-Wound Core:** Unlike multilayer inductors, this part uses a wire wound around a ceramic core. This results in much higher Q factors and higher current handling capabilities. * **Ceramic Body:** The non-magnetic ceramic material ensures excellent thermal stability and low losses at high frequencies. * **Epoxy Coating:** Usually features a top-side epoxy encapsulation to protect the winding and provide a flat surface for pick-and-place machines. --- ### Common Applications 1. **RF Circuits:** Used in matching networks and filters for wireless communication devices. 2. **High-Speed Data Lines:** Provides noise suppression without degrading signal integrity. 3. **Bluetooth/WLAN:** Ideal for portable devices due to the small 0805 form factor. 4. **Oscillators:** Used in VCOs (Voltage Controlled Oscillators) where a high Q factor is critical for frequency stability. --- ### Decoding the Part Number The part number can be broken down to understand the specific variant: | Segment | Meaning | | :--- | :--- | | **AISC** | Abracon Inductor Series (Wire-Wound Chip) | | **0805** | Case Size (0.08 x 0.05 inches) | | **R33** | Inductance Value (R denotes decimal: 0.33 µH) |