The **0805HT-R50TGLC** is a high-performance, wire-wound surface mount (SMD) inductor, typically manufactured by companies like **Coilcraft**. It is part of a series designed specifically for high-frequency applications where high "Q" factors and tight tolerances are required. ### 1. Part Number Breakdown Understanding the alphanumeric code helps identify the component's specifications: | Segment | Meaning | Detail | | :--- | :--- | :--- | | **0805** | Case Size | 0.08 x 0.05 inches (approx. 2.0 x 1.25 mm) | | **HT** | Series Code | High Temperature / High Q Wire-wound Series | | **R50** | Inductance Value | R50 = 0.50 µH (500 nH) | | **T** | Tolerance | G = ±2% (Commonly G or J, where J is ±5%) | | **G** | Termination | Gold over Nickel (RoHS compliant) | | **L** | Packaging | Tape and Reel | | **C** | Grade | Commercial/Standard Grade | --- ### 2. Technical Specifications These parts are engineered for RF (Radio Frequency) circuits. Below are the typical electrical characteristics for this specific value: * **Inductance:** 500 nH (0.50 µH) * **Tolerance:** ±2% (High precision) * **Quality Factor (Q):** High Q (typically > 60 at 100 MHz), ensuring low signal loss. * **Self-Resonant Frequency (SRF):** High SRF (usually > 600 MHz), allowing use in high-speed applications. * **DC Resistance (DCR):** Low resistance to minimize heat and power loss. * **Current Rating (Irms):** Typically rated between 150mA to 400mA depending on the specific sub-series. --- ### 3. Key Features & Construction * **Wire-wound Core:** Unlike multilayer inductors, these use a ceramic core with wire wrapped around it. This construction provides much higher Q factors and better current handling. * **Size (0805):** A standard industry footprint that balances small size with ease of handling during automated PCB assembly (SMT). * **High Temperature Stability:** Designed to maintain inductance stability across a wide temperature range (often -40°C to +125°C). --- ### 4. Common Applications Due to its precision and high-frequency performance, the 0805HT-R50TGLC is used in: 1. **RF Filter Networks:** Band-pass or low-pass filters in wireless communication. 2. **Impedance Matching:** Tuning antennas in Wi-Fi, Bluetooth, or cellular modules. 3. **Oscillators:** Serving as the inductive element in LC tank circuits. 4. **Signal Conditioning:** Decoupling high-frequency noise in sensitive analog lines. ---