## Analysis of the CCFH0805-R68 Electronic Component The **CCFH0805-R68** is a Surface Mount Device (SMD) inductor, specifically a high-frequency wire-wound chip inductor. These components are designed for high-frequency applications where stability and low loss are critical. --- ### 1. Part Number Breakdown Understanding the nomenclature helps identify the physical and electrical characteristics: | Code Segment | Meaning | Description | | :--- | :--- | :--- | | **CCFH** | Series / Type | High-frequency ceramic core inductor. | | **0805** | Case Size | Industry standard 0805 package (2.0mm x 1.25mm). | | **R68** | Inductance Value | **0.68 µH** (680 nH). The 'R' acts as a decimal point. | --- ### 2. Key Technical Specifications While exact specifications can vary slightly by manufacturer (such as Coilcraft or Walsin), the standard parameters for a 0805 R68 high-frequency inductor are typically: * **Inductance:** 680 nH (0.68 µH) * **Tolerance:** Commonly ±5% (J) or ±10% (K) * **Self-Resonant Frequency (SRF):** Typically > 500 MHz (critical for high-speed circuits) * **DC Resistance (DCR):** Low resistance, usually ranging from 0.8 to 1.5 Ohms * **Rated Current:** Usually between 150mA and 400mA depending on the specific series rating * **Operating Temperature:** -40°C to +125°C --- ### 3. Construction and Material * **Core Material:** Usually **Ceramic**. Ceramic cores provide excellent frequency response and high SRF but offer lower inductance values compared to ferrite cores. * **Winding:** Fine copper wire wound around the ceramic body. * **Termination:** Lead-free plating (usually Tin over Nickel/Silver) for standard SMT reflow soldering. --- ### 4. Common Applications Due to its high-frequency stability and 0805 footprint, this part is commonly used in: 1. **RF Circuits:** Matching networks and filters in wireless communication devices. 2. **Bluetooth/WLAN:** Signal conditioning in 2.4GHz and 5GHz modules. 3. **High-Speed Data Lines:** EMI suppression and noise decoupling. 4. **Oscillators:** Serving as a frequency-determining element in LC tank circuits. --- ### 5. Mechanical Dimensions (0805 Metric 2012) | Dimension | Millimeters (mm) | Inches (in) | | :--- | :--- | :--- | | Length (L) | 2.00 ± 0.20 | 0.079 ± 0.008 | | Width (W) | 1.25 ± 0.20 | 0.049 ± 0.008 | | Height (H) | 1.20 ± 0.20 | 0.047 ± 0.008 |