The **XFWIHT0805-R10J** is a surface-mount electronic component, specifically a **High-Current Wire-Wound Chip Inductor**. Based on the standard naming conventions for this series (often manufactured by companies like XFMRS or equivalent high-frequency inductor specialists), here is the detailed breakdown. --- ### 1. Part Number Breakdown Understanding the nomenclature helps identify the physical and electrical characteristics: | Segment | Meaning | Description | | :--- | :--- | :--- | | **XFWIHT** | Series | High-Temperature / High-Current Wire-Wound Inductor | | **0805** | Case Size | Imperial units (0.08 x 0.05 inches) / Metric 2012 | | **R10** | Inductance | **0.10 µH** (R denotes the decimal point) | | **J** | Tolerance | **±5%** (Standard for precision wire-wound parts) | --- ### 2. Technical Specifications While exact values can vary slightly by manufacturer, the typical specifications for an 0805 R10 inductor are: * **Inductance:** 100 nH (0.10 µH) * **Tolerance:** ±5% (J) * **Quality Factor (Q):** Typically high (usually >30 at 100MHz), making it suitable for RF applications. * **Self-Resonant Frequency (SRF):** Generally above 800 MHz – 1 GHz. * **DC Resistance (DCR):** Low (usually < 0.2 Ohms) to minimize power loss. * **Rated Current:** High relative to size, typically between 400mA and 800mA. --- ### 3. Key Features * **Wire-Wound Construction:** Unlike multilayer inductors, wire-wound types offer much higher Q factors and higher current handling capabilities. * **High Temperature Rating:** The "HT" designation usually implies a wide operating range, often **-40°C to +125°C**. * **Miniature Footprint:** The 0805 size is ideal for compact PCB designs in mobile or handheld devices. --- ### 4. Common Applications These components are primarily used in high-frequency circuits where signal integrity and low loss are critical: 1. **RF Matching Circuits:** Used in antennas for smartphones and Wi-Fi modules. 2. **Filter Networks:** High-pass, low-pass, and band-pass filters for telecommunications. 3. **Local Oscillators:** Frequency stabilization in RF oscillators. 4. **Decoupling:** Filtering high-frequency noise in power lines for sensitive analog chips. --- ### 5. Footprint (Solder Pattern) For PCB layout, the 0805 package requires the following standard dimensions: ```text <--- 2.0mm ---> +---------------+ ^ | | | | | 1.25mm +---------------+ v ^ ^ Solder Solder Pad 1 Pad 2 ``` ---