The **CI1008-R10-JB** is a specific surface-mount electronic component, typically classified as a **Wire-wound Chip Inductor**. These parts are widely used in Radio Frequency (RF) circuits due to their high precision and stability. --- ### 1. Part Number Deciphering To understand the technical characteristics, we can break down the part number: | Segment | Code | Meaning | | :--- | :--- | :--- | | **Series** | CI1008 | Case size 1008 (2.5mm x 2.0mm) | | **Inductance** | R10 | 0.10 Microhenries ($\mu H$) or 100 Nanohenries ($nH$) | | **Tolerance** | J | $\pm 5\%$ | | **Packaging** | B | Bulk (or specific reel type depending on manufacturer) | --- ### 2. Technical Specifications The following table outlines the typical electrical parameters for this class of inductor: | Parameter | Value | | :--- | :--- | | **Inductance** | 100 nH ($0.1 \mu H$) | | **Tolerance** | $\pm 5\%$ | | **DC Resistance (Max)** | ~0.56 Ohms | | **Rated Current (Max)** | ~400 mA | | **Self-Resonant Frequency** | ~1000 MHz | | **Q-Factor (Min)** | 50 at 25 MHz | | **Operating Temp** | -40°C to +125°C | --- ### 3. Key Physical Features * **Construction:** Ceramic or Ferrite core with a copper wire wound around it. The wire-wound design allows for much higher "Q" (quality factor) and lower DC resistance compared to multilayer inductors. * **Encapsulation:** Often coated with an epoxy resin to protect the windings from environmental factors and physical damage. * **Form Factor:** The **1008** footprint is relatively small but large enough to handle moderate currents compared to 0402 or 0603 sizes. ### 4. Common Applications Due to the high frequency performance and 100nH value, this part is commonly used in: * **RF Matching Networks:** Impedance matching for antennas in Bluetooth, Wi-Fi, or LTE modules. * **Oscillators:** Serving as a frequency-determining element in LC circuits. * **Signal Filtering:** Low-pass or band-pass filters to remove noise from high-frequency signal lines. * **Power Decoupling:** Removing high-frequency ripples in DC power supply lines for sensitive ICs. ---