Based on the part number **CFL161010CF-R39**, this is a **Multilayer Chip Inductor** (specifically a Power Inductor) typically used for power management in compact electronic devices. Below is a detailed breakdown of its specifications and electronic characteristics. --- ### 1. Part Number Breakdown The nomenclature follows industry standards for surface-mount device (SMD) inductors: | Component Segment | Meaning | Detail | | :--- | :--- | :--- | | **CFL** | Series Code | Multilayer Chip Power Inductor. | | **161010** | Dimensions | Metric size: 1.6 x 1.0 x 1.0 mm (EIA 0604). | | **CF** | Material Code | Refers to the ferrite material type and construction. | | **R39** | Inductance Value | **0.39 µH** (R denotes the decimal point). | --- ### 2. Key Technical Specifications While exact values can vary slightly by manufacturer (such as TDK, Murata, or Sunlord), the "R39" series generally adheres to these parameters: | Parameter | Typical Value | | :--- | :--- | | **Inductance** | 0.39 µH | | **Tolerance** | ±20% or ±30% (Standard for power inductors) | | **DC Resistance (DCR)** | ~0.08Ω - 0.12Ω (Low resistance for efficiency) | | **Rated Current (I-sat)** | ~1.2A - 1.8A (Saturation current) | | **Operating Temperature** | -40°C to +125°C | --- ### 3. Electronic Characteristics * **Multilayer Construction:** Unlike wire-wound inductors, this is built by layering conductive paste and ferrite material. This results in a magnetically shielded structure, reducing electromagnetic interference (EMI). * **High Current Handling:** Despite its small 0604 footprint, the "CF" series is designed to handle the high ripple currents found in DC-DC converters. * **Low Profile:** The "10" in the suffix indicates a maximum height of 1.0mm, making it ideal for slim devices like smartphones and wearables. --- ### 4. Typical Applications This specific inductor is primarily used in **Point of Load (POL)** power modules and **DC-DC Step-Down (Buck) Converters**: 1. **Mobile Phones:** Powering the CPU/GPU rails where space is critical. 2. **SSD Drives:** Filtering noise in high-speed data storage power lines. 3. **IoT Modules:** Providing stable voltage regulation for Bluetooth/Wi-Fi chips. ---