The **CI1008-R01-JT** is a high-frequency Surface Mount Device (SMD) inductor. It belongs to the **1008 series** (referring to its physical dimensions) and is primarily used in RF (Radio Frequency) and telecommunication circuits for signal filtering and impedance matching. --- ### 1. Part Number Breakdown Understanding the nomenclature helps identify the component's exact specifications: | Segment | Meaning | Detail | | :--- | :--- | :--- | | **CI** | Series Code | Ceramic Core Chip Inductor | | **1008** | Case Size | 0.10 x 0.08 inches (approx. 2.5 x 2.0 mm) | | **R01** | Inductance Value | R represents decimal point: 0.01 µH (or **10 nH**) | | **J** | Tolerance | ±5% | | **T** | Packaging | Tape & Reel | --- ### 2. Technical Specifications Typical electrical characteristics for this specific part include: * **Inductance:** 10 nH (Nanohenries). * **Tolerance:** ±5% (Standard for RF components). * **Core Material:** Ceramic (Non-magnetic, offering high thermal stability). * **Quality Factor (Q):** Usually high (>30-50 at specific frequencies) to minimize energy loss. * **Self-Resonant Frequency (SRF):** Very high (typically >2000 MHz), allowing it to operate in microwave/GHz ranges. * **DC Resistance (DCR):** Low (usually <0.15 Ω) to handle current without significant heating. --- ### 3. Physical Construction The CI1008-R01-JT is a **Wire-Wound** inductor. Unlike multilayer inductors, the wire-wound construction offers: 1. **Lower DCR:** Permits higher current ratings. 2. **Higher Q-Factor:** Better performance in resonant circuits. 3. **Stability:** Better performance consistency across temperature changes. --- ### 4. Common Applications Due to its high frequency and low inductance characteristics, it is found in: * **Mobile Communication:** Smartphones, GPS modules, and Bluetooth transceivers. * **WLAN/Wi-Fi:** High-speed wireless networking hardware. * **RF Matching:** Matching the impedance between an antenna and a power amplifier. * **Oscillators:** Used in VCOs (Voltage Controlled Oscillators) to set frequency. ---