The **TCDA1090-R30M** is a high-performance power inductor, typically utilized in DC-DC converters, voltage regulator modules (VRMs), and power supply circuits for automotive or industrial applications. Below is a detailed breakdown of its electronic characteristics and specifications. --- ### 1. General Specifications The part number follows a standard nomenclature for power inductors. Here are the primary parameters for this specific component: | Parameter | Specification | Description | | :--- | :--- | :--- | | **Inductance** | 0.30 µH (R30) | The nominal inductance value. | | **Tolerance** | ±20% (M) | The allowed variation in inductance. | | **DC Resistance (DCR)** | ~0.5 - 0.9 mΩ | Measures energy loss as heat; lower is better. | | **Saturation Current ($I_{sat}$)** | ~50A - 70A | The current at which inductance drops by 20-30%. | | **Heat Rating Current ($I_{rms}$)** | ~40A - 55A | The current that causes a 40°C temperature rise. | | **Operating Temp** | -55°C to +125°C | Standard range for industrial/automotive use. | --- ### 2. Key Internal Construction * **Core Material:** Usually made of **Metal Alloy Powder**. This material provides "soft saturation" characteristics, meaning the inductance doesn't drop off instantly when high current is applied. * **Shielding:** It is a **Magnetic Shielded** design. This minimizes Electromagnetic Interference (EMI) with neighboring components on the PCB. * **Winding:** Typically utilizes thick copper wire to minimize DC resistance (DCR) and handle extremely high currents. --- ### 3. Application Use Cases This specific inductor is designed for high-frequency, high-current environments: 1. **CPU/GPU Power Supply:** Used in multi-phase buck converters to provide stable voltage to processors. 2. **Point of Load (POL) Converters:** High-efficiency power regulation for FPGAs and ASICs. 3. **Automotive Electronics:** Powering infotainment systems or ADAS sensors where high reliability is required. 4. **Battery Management Systems:** Handling high current charges and discharges. --- ### 4. Footprint and Packaging * **Size:** The "1090" designation usually refers to the physical dimensions (roughly **10mm x 9mm** or 10.x mm x 10.x mm depending on the manufacturer's specific series). * **Mounting:** SMD (Surface Mount Device). It features robust solder pads designed to handle thermal expansion and mechanical stress. ---