The **CI160808-R12J** is a surface-mount multilayer chip inductor, commonly used in high-frequency circuit applications. This part follows standard naming conventions used by manufacturers like Bourns or TDK. --- ### 1. Part Number Breakdown Understanding the alphanumeric code reveals the physical and electrical specifications of the component: | Segment | Meaning | Specification | | :--- | :--- | :--- | | **CI** | Product Series | Chip Inductor (Multilayer type) | | **160808** | Case Size (EIA 0603) | 1.6mm x 0.8mm x 0.8mm | | **R12** | Inductance Value | 0.12 µH (120 nH) | | **J** | Tolerance | ±5% | --- ### 2. Technical Specifications Typical characteristics for this class of multilayer inductor include: * **Inductance:** 120 nH (Nanohenries). * **Quality Factor (Q):** Usually ranges between 10 and 15 at a specific test frequency (e.g., 50 MHz). * **Self-Resonant Frequency (SRF):** Typically high, often above 500 MHz, making it suitable for RF filtering. * **Rated Current:** Usually in the range of 100mA to 300mA. * **DC Resistance (DCR):** Generally ranges from 0.5Ω to 1.2Ω. * **Operating Temperature:** Typically -55°C to +125°C. --- ### 3. Key Features & Construction * **Multilayer Technology:** Unlike wire-wound inductors, these are constructed by layering ceramic materials and internal electrodes. This results in a monolithic, shielded structure. * **Magnetic Shielding:** The closed magnetic circuit minimizes crosstalk and electromagnetic interference (EMI) with neighboring components. * **High Reliability:** The solid construction provides excellent physical resistance to heat and mechanical shocks during the soldering process. --- ### 4. Common Applications These inductors are found in compact electronic devices where space is at a premium: 1. **Mobile Communication:** Cell phones, pagers, and GPS modules. 2. **RF Circuits:** Used in high-frequency oscillators, impedance matching networks, and filters. 3. **EMI Suppression:** Filtering high-frequency noise in signal lines. 4. **WLAN/Bluetooth:** Found in wireless networking hardware for signal integrity. ---