The **VCTA20161B-R50MS6** is a high-performance **Surface Mount (SMD) Power Inductor**, typically manufactured by companies like Cyntec or similar specialized magnetic component producers. It belongs to the "molded" inductor category, designed for high-density power applications. --- ### 1. Technical Specifications The part number follows a specific nomenclature that defines its physical and electrical characteristics: | Parameter | Specification | Description | | :--- | :--- | :--- | | **Inductance** | 0.50 µH | Energy storage capability. | | **Tolerance** | ±20% (M) | Standard industry tolerance for power inductors. | | **Case Size** | 2016 (Metric) | 2.0mm x 1.6mm footprint. | | **Height** | 1.0mm (Max) | Ultra-low profile design. | | **DC Resistance (DCR)** | ~18-25 mΩ | Internal resistance (typical range for this series). | | **Saturation Current** | ~4.5A - 5.5A | Point where inductance drops by 30%. | | **Core Material** | Metal Alloy | Provides high saturation and low EMI. | --- ### 2. Key Features * **Molded Construction:** The coil is encapsulated in a metallic powder iron core. This provides excellent magnetic shielding and high mechanical strength. * **Low Profile:** The "10" or "1B" in the series often signifies a height around 1.0mm, making it ideal for thin consumer electronics. * **Soft Saturation:** Unlike ferrite inductors, metal alloy inductors saturate "softly," meaning they don't lose all inductance instantly when current spikes. * **High Efficiency:** Optimized for low DCR to minimize power loss through heat (I²R losses). --- ### 3. Common Applications This specific inductor is generally used in **DC-DC Converters** and **Point-of-Load (POL)** power supplies. Common devices include: 1. **Smartphones & Tablets:** For CPU/GPU core voltage regulation. 2. **Wearables:** Smartwatches and fitness trackers where space is extremely limited. 3. **SSD Drives:** Managing power rails for high-speed data storage. 4. **IoT Modules:** Providing stable power for Wi-Fi/Bluetooth chipsets. --- ### 4. Circuit Symbol and Footprint ```pcb [ Footprint: 2016 ] _______ | --- | | [ L ] | <-- Inductor Symbol (L) | --- | ------- 2.0mm x 1.6mm ```