The **TCFL1008CF-R91** is a high-performance, surface-mount (SMD) wire-wound chip inductor. It is designed for high-frequency applications where stability and precision are critical. --- ### 1. Part Number Breakdown The part number follows a specific nomenclature that describes its physical and electrical characteristics: | Component Segment | Description | Value/Meaning | |:---|:---|:---| | **TCFL** | Series Name | High-Frequency Wire-Wound Inductor | | **1008** | Case Size | 1008 (Imperial) / 2520 (Metric) | | **CF** | Material/Process | Ceramic Core / High Frequency | | **R91** | Inductance Value | 0.91 µH (910 nH) | --- ### 2. Technical Specifications Below are the typical electrical parameters for this specific component: | Parameter | Value | |:---|:---| | **Inductance** | 0.91 µH (910 nH) | | **Tolerance** | Usually ±5% or ±10% (Common for this series) | | **DC Resistance (DCR)** | Low (Typically < 1.0 Ω) | | **Rated Current** | High relative to size (Approx. 200mA - 400mA) | | **Self-Resonant Frequency** | Very High (Essential for RF stability) | | **Operating Temperature** | -40°C to +125°C | --- ### 3. Key Features * **Wire-Wound Construction:** Unlike multilayer inductors, the wire-wound design offers a significantly higher **Q factor** (Quality Factor), meaning lower energy loss at high frequencies. * **Ceramic Core:** Provides excellent thermal stability and a high self-resonant frequency (SRF), making it ideal for RF circuits. * **Miniature Footprint:** The 1008 (2.5mm x 2.0mm) size allows for high-density PCB layouts. --- ### 4. Common Applications This part is frequently found in the following types of circuitry: 1. **RF Matching Networks:** Tuning and matching impedance in wireless communication devices. 2. **Filter Circuits:** Used in Low Pass or Band Pass filters to eliminate noise. 3. **WLAN/Bluetooth Modules:** Providing signal integrity in high-frequency wireless modules. 4. **Oscillators:** Serving as a stable inductive element in LC tanks. ---