The **SCI0805S-R36F** is a specific electronic component belonging to the family of **Surface Mount (SMD) Wire-Wound Ceramic Chip Inductors**. These are commonly used in high-frequency RF (Radio Frequency) circuits. Below is a detailed breakdown of its specifications and characteristics. --- ### 1. Part Number Deciphering Understanding the naming convention helps identify the physical and electrical limits of the part: | Segment | Meaning | Details | | :--- | :--- | :--- | | **SCI** | Series Name | Standard Chip Inductor (Wire-wound) | | **0805** | Case Size | 0.08 x 0.05 inches (Metric: 2012) | | **S** | Material/Process | Standard / High Q Ceramic Core | | **R36** | Inductance Value | R represents decimal point: **0.36 µH (360 nH)** | | **F** | Tolerance | **±1%** (Very high precision) | --- ### 2. Technical Specifications The "S" series typically features high self-resonant frequencies and high Q factors. * **Inductance:** 360 nH (0.36 µH) * **Tolerance:** ±1% * **Core Material:** Ceramic (Non-magnetic, offering excellent thermal stability) * **Termination:** Tin over Nickel (Lead-free/RoHS compliant) * **Operating Temperature:** Generally -40°C to +125°C --- ### 3. Key Performance Features #### A. High Q Factor Because it is wire-wound on a ceramic core, it has very low DC resistance (DCR) compared to multilayer inductors. This results in a high "Quality Factor," meaning low energy loss at high frequencies. #### B. Self-Resonant Frequency (SRF) Ceramic inductors have high SRF. For a 360nH 0805 inductor, the SRF is typically in the range of **500 MHz to 900 MHz**. It should always be operated well below this frequency to remain inductive. #### C. Current Handling While smaller than power inductors, the 0805 wire-wound series can typically handle Rated Currents ($I_{DC}$) between **200mA and 500mA**, depending on the specific manufacturer's heat dissipation rating. --- ### 4. Common Applications Due to the ±1% tolerance and high-frequency stability, this part is found in: * **RF Filters:** Bandpass and Lowpass filters in wireless communication. * **Impedance Matching:** Used in antenna circuits to ensure maximum power transfer. * **Oscillators:** Providing stable inductance for frequency generation. * **VCOs:** Voltage Controlled Oscillators in cellular and Wi-Fi modules. --- ### 5. Footprint (0805) Dimensions | Dimension | Inches | Millimeters (mm) | | :--- | :--- | :--- | | Length (L) | 0.080 | 2.03 | | Width (W) | 0.050 | 1.27 | | Height (H) | 0.045 | 1.14 | ---